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  • Senior Frontend Developer/Mobile Lead (React + Cross-Platform)

    Uprecruit

    Senior java developer job in San Jose, CA

    Job Title: Senior Frontend Developer / Mobile Lead Employment Type: Full-Time ** Love greenfield mobile app development? We're hiring our first Mobile & Frontend Lead to architect and launch a brand-new cross-platform mobile app while leveling up our web platform. Huge impact, no bureaucracy. ** About Us We're representing a rapidly scaling SaaS platform that connects media professionals with the experts they need, helping power millions of articles and enabling smarter, faster communication. With strong revenue, a modern backend foundation already in place, and a high-performing engineering team, the company is now investing in a senior frontend specialist to lead its next major product evolution. Position Overview We're looking for a Senior Frontend Developer / Mobile Lead who can architect, build, and elevate the user-facing side of the platform. This person will drive the creation of the company's first mobile app, lead a full modernization of the web application, and set the long-term technical direction for all frontend development. This role is ideal for someone who loves React, cares deeply about UX, and enjoys mentoring engineers while remaining hands-on. Key Responsibilities • Architect and build a new cross-platform mobile app (iOS & Android) using React + Capacitor • Lead the rewrite and modernization of the web application with a component-driven React approach • Set coding standards, review code, and mentor frontend and full-stack engineers • Partner closely with design to deliver polished, accessible, responsive user experiences • Push UX excellence through performance tuning, animations, and clean interface design • Collaborate with backend engineering by consuming APIs, not building them Qualifications • 5+ years of deep experience with React and modern JavaScript/TypeScript • Proven history of shipping at least one iOS app as the primary architect (App Store link required) • Strong experience building cross-platform mobile apps (Capacitor preferred) • Skilled at turning designs into elegant, consumer-quality interfaces • Demonstrated ability to lead, mentor, and raise the bar for frontend engineering • Independent, highly self-directed, and able to take high-level requirements and run • Must be US-based; no sponsorship available Bonus Points For • Experience with PWAs, push notifications, or real-time interfaces • Familiarity with Algolia, Storybook, or modern CSS/UI component patterns • Experience with testing frameworks like Jest + React Testing Library Why Join Us? • First dedicated frontend/mobile leader - shape the entire client-side engineering vision • Zero backend context switching - pure frontend focus • High-impact role building consumer-grade experiences used daily by media professionals • Competitive compensation package ($190K-$220K), fully paid employee health insurance, 401(k), and strong PTO • Remote-first culture with a supportive, talented engineering and design team
    $190k-220k yearly 1d ago
  • Software Engineer

    Acceler8 Talent

    Senior java developer job in San Jose, CA

    Software Engineer - AI Infra Startup - San Francisco, CA A small, deeply technical AI infra startup in San Francisco, building the platform that next-gen AI apps will run on - think custom compilers, CUDA kernels, and distributed orchestration are looking for a Software Engineer to join their team. What will I be doing? As a Software Engineer you'll help architect and build the infrastructure powering the next generation of AI systems. You'll work across the stack on: High-performance, distributed systems that support real-time AI workloads Kubernetes orchestration, infra tooling, and automation pipelines Low-level runtime components like custom compilers and CUDA kernels Scalable, reliable backend services Collaborating directly with the founding team on technical strategy and core architecture What are we looking for? Strong background in systems programming, backend, or infra engineering Experience with distributed systems, container orchestration, and Linux internals Comfortable working across multiple layers of the stack, from low-level code to infra ops Fast learner who thrives in ambiguous, high-agency environments Bonus: Experience with compilers, CUDA, or ML infrastructure What's in it for me: up to $300k base dependent on experience + 0.2-0.5% equity Work directly with deeply technical founders (ex-Stanford, Google, and more) on some of the hardest problems in AI infra On-site in San Francisco Stealth startup with serious backing, operating lean and hiring intentionally Apply now for immediate consideration!
    $300k yearly 2d ago
  • Ember.js FE Web Developer

    Eliassen Group 4.7company rating

    Senior java developer job in Cupertino, CA

    Client's Global Security Tools team builds web and iOS applications to protect client's people and information. The apps we develop and support are used daily by thousands of employees around the world to help them deliver amazing products and experiences to client's customers. We are constantly taking on new projects to address critical business and security challenges, and we need a creative, experienced developer to help. In a typical day on the team, you'll spend time on writing code, and an equal amount of time reviewing others' contributions or discussing different approaches to solving a technical challenge. You'll regularly suggest opportunities to improve how we work as a team and deliver high-quality apps, whether by changing how we communicate or improving our build pipeline. We strongly value problem-solving and continuous improvement. When we find a great technical or process solution, we adopt and adapt it across our projects. Being disciplined about our day-to-day work gives us the freedom to respond flexibly and creatively to new challenges. Due to client requirement, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance. Rate: $65 - $75 / hr. w2 Responsibilities: You will be expected to work collaboratively with the team while taking responsibility for your own contributions. You should be comfortable taking ownership over a specific goal or problem (even if it's a small one) and prepared to talk about your experiences in doing that. We build full stack applications with PHP (Symfony) and Swift on the back-end, Ember.js and SwiftUI on the front-end. Requirements: Front-end development using Vue.js, Ember.js and/or React (must have Ember.js) Back-end API development with PHP and Symfony or a similar framework Continuous integration and deployment We believe that the best candidates can learn our specific problems and tools quickly, but they must bring a strong motivation for learning, self- and team improvement, and delivering their best in a complex, time-sensitive environment. Please be advised- If anyone reaches out to you about an open position connected with Eliassen Group, please confirm that they have an Eliassen.com email address and never provide personal or financial information to anyone who is not clearly associated with Eliassen Group. If you have any indication of fraudulent activity, please contact ********************. Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range. W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality. JOB ID: JN -082024-84387
    $65-75 hourly 3d ago
  • Mobile Application Developer

    LHH 4.3company rating

    Senior java developer job in San Jose, CA

    Software Engineer Pay Range: $70-85/hour Onsite Expectation: Negotiable; ideally Tuesday and Thursday About the Role LHH is partnering with a leading client to identify an experienced Software Engineer for a short-term engagement. This role is ideal for a highly skilled engineer with strong native mobile development experience and backend expertise. You will contribute to critical services and integrations that power a fast-paced, innovative environment. Key Responsibilities Develop and maintain native mobile applications for iOS (Swift) and Android (Kotlin). Design and implement robust APIs, collaborating closely with backend engineers. Contribute to the core services and data aggregation layer, ensuring scalability, quality, and rapid iteration. Build high-quality integrations with internal services leveraging rich financial datasets. Partner with external teams to acquire new data and enhance user experiences. Drive automation across build, deployment, testing, monitoring, and data pipelines. Collaborate with front-end developers to deliver end-to-end solutions. Mentor and coach team members, fostering technical growth and best practices. Embrace Agile/Scrum methodologies and contribute to a collaborative team culture. What's Great About This Role Ownership of a critical component of the user experience. Opportunity to solve big, industry-changing problems. Work in a fast-paced, start-up-like environment within a major organization. Make a meaningful impact on improving the lives of millions of users. Required Skills & Experience Native Mobile Development: Proficient in Swift (iOS) and Kotlin (Android). Backend Expertise: Strong in Scala (primary language), with experience in Java or functional languages. Familiarity with API design, microservices architecture, and messaging patterns. Messaging Platforms: Experience with Kafka, RabbitMQ, Amazon SQS, or similar. Infrastructure & Deployment: Kubernetes and container technologies. Strong understanding of deployment strategies and production infrastructure. Core Technical Foundations: OOP, design patterns, algorithms, networking, and Linux OS. Web application internals and scalability across tiers. Database Skills: Proficiency in SQL, relational schema design, and ORM concepts. Additional: Minimum 5 years as a backend developer. Experience building large-scale, high-volume, testable systems. Soft Skills: Strong communication and leadership abilities. Ability to mentor and coach team members. Agile/Scrum experience. Additional Notes Candidate should be strong in native development and API design. Understanding of data structures is less critical. Reporting schedule may vary based on time zone; team members are located in Charlotte and Oakland. Benefit Offerings: Benefit offerings include medical, dental, vision, life insurance, short-term disability, additional voluntary benefits, EAP program, and 401K plan. Our program provides employees the flexibility to choose the type of coverage that meets their individual needs. Available paid leave may include Paid Sick Leave, where required by law; any other paid leave required by Federal, State, or local law; and Holiday pay upon meeting eligibility criteria. Equal Opportunity Employer/Veterans/Disabled To read our Candidate Privacy Information Statement, which explains how we will use your information, please navigate to ******************************************* The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable: The California Fair Chance Act Los Angeles City Fair Chance Ordinance Los Angeles County Fair Chance Ordinance for Employers San Francisco Fair Chance Ordinance
    $70-85 hourly 2d ago
  • Python Backend Engineer - 3D / Visualization / API / Software (On-site)

    Attis

    Senior java developer job in San Jose, CA

    A pioneering and well-funded AI company is seeking a talented Python Backend Engineer to build the core infrastructure for its revolutionary autonomous systems. This is a unique opportunity to join an innovative team at the forefront of engineering and artificial intelligence, creating a new category of software that will redefine how complex products in sectors like aerospace, automotive, and advanced manufacturing are designed and developed. Why Join? Build the Future of Engineering: This isn't just another backend role. Your work will directly shape how next-generation rockets, cars, and aircraft are designed, fundamentally changing the engineering landscape. Solve Unprecedented Technical Puzzles: Tackle unique challenges in building the infrastructure for autonomous AI agents, including simulation orchestration, multi-agent coordination, and scalable model serving. Shape a Foundational Platform: As a critical member of a pioneering team, you will have a significant impact on the technical direction and core architecture of an entirely new category of software. Join a High-Impact Team: Work in a collaborative, fast-paced environment where your expertise is valued, and you have end-to-end ownership of critical systems. Compensation & Location: Base salary of up to $210,000 + equity + benefits, while working on-site with the team in a modern office in downtown San Francisco. The Role As a Python Backend Engineer, you will be instrumental in constructing the infrastructure that underpins these autonomous engineering agents. Your responsibilities will span model serving, simulation orchestration, multi-agent coordination, and the development of robust, developer-facing APIs. This position is critical for delivering the fast, reliable, and scalable systems that professional engineers will trust and depend on in high-stakes production environments. You will: Own and build the core backend infrastructure for the autonomous AI agents, focusing on scalability, model serving, and multi-agent orchestration. Design and maintain robust APIs while integrating essential third-party tools like CAD software and simulation backends into the core platform. Develop backend services to process and serve complex 3D visualizations from simulation and geometric data. Collaborate across ML, frontend, and simulation teams to shape the product and engage directly with early customers to drive infrastructure needs. Make foundational architectural decisions that will define the technical future and scalability of the entire platform. The Essential Requirements Strong backend software engineering experience, with a primary focus on Python. Proven experience in designing, building, and maintaining production-level APIs (FastAPI preferred but Flask and Django also considered). Experience with 3D visualization libraries or tools such as PyVista, ParaView, or VTK. Excellent systems-thinking skills and the ability to reason about the interactions between compute, data, and models. Experience working in fast-paced environments where end-to-end ownership and proactivity are essential. Exceptional communication and collaboration abilities. What Will Make You Stand Out Experience integrating with scientific or engineering software (such as CAD, FEA, or CFD tools). Exposure to agent frameworks, workflow orchestration engines, or distributed systems. Familiarity with model serving frameworks (e.g., TorchServe, Triton) or simulation backends. Previous experience building developer-focused tools or working in high-trust, customer-facing technical roles. If you are interested in this role, please apply with your resume through this site. SEO Keywords for Search Python Backend Engineer, Python Software Engineer, Backend Engineer, Software Engineer, Python Developer, AI Engineer, Machine Learning Infrastructure, MLOps Engineer, Backend Software Engineer (Python), Senior Backend Engineer, AI/ML Engineer, Infrastructure Engineer, FastAPI Developer, PyVista, ParaView, VTK, 3D Visualization, Docker, Kubernetes, Cloud Engineer, AI Platform Engineer, Distributed Systems Engineer, Simulation Software Engineer, CAD Integration, CFD, FEA, Scientific Computing, High-Performance Computing (HPC), Agent Frameworks, Workflow Orchestration, Technical Lead, Staff Engineer. Disclaimer Attis Global Ltd is an equal opportunities employer. No terminology in this advert is intended to discriminate on any of the grounds protected by law, and all qualified applicants will receive consideration for employment without regard to age, sex, race, national origin, religion or belief, disability, pregnancy and maternity, marital status, political affiliation, socio-economic status, sexual orientation, gender, gender identity and expression, and/or gender reassignment. M/F/D/V. We operate as a staffing agency and employment business. More information can be found at attisglobal.com.
    $210k yearly 4d ago
  • Software Engineer

    Premier Group 4.5company rating

    Senior java developer job in San Jose, CA

    Founding Engineer $140K - $200K + equity San Francisco (Onsite Role) Direct Hire A fast growing early-stage start who recently secured a significant amount at Seed is actively hiring 3x software engineers to join their founding team. They're looking for people who are scrappy, move fast, challenge assumptions, and are driven to win. They build quickly and expect teammates to push boundaries. Who You Are Make quick, reversible (ā€œtwo-way doorā€) decisions Proactively fix problems before being asked Comfortable working across a modern engineering stack (e.g., TypeScript, Python, containerisation, ML/LLM tooling, databases, cloud environments, mobile frameworks) Have built real, shipped products Thrive in ambiguity and fast-moving environments What You'll Do Talk directly with users to understand their workflows, pain points, and needs Architect systems that support large enterprise usage Build automated pipelines and intelligent agents that process and verify large volumes of data Maintain scalable, robust infrastructure Ship quickly - progress over perfection The Reality You'll work closely with the founding team and directly with customers User value beats hype, trends, and ā€œcool techā€ Expect a demanding, high-output culture If you're a Software Engineer with 2 + years' experience and want to work in a growing start-up, please do apply now for immediate consideration.
    $140k-200k yearly 2d ago
  • Robotic Software Engineer

    Insight Recruitment

    Senior java developer job in San Jose, CA

    Robotics Software Engineer (Generalist/Full-Stack) Robotic Software Engineer - Humanoid Robotics Palo Alto, SF Bay Area (Full-time | Onsite) $180k-$200k + equity (flexible for exceptional candidates) We are recruiting building next-generation humanoid robotic systems that combine advanced AI with cutting-edge hardware. Our team moves fast, prototypes aggressively, and puts real robots into the world. We're now hiring a Robotic Software Engineer to help shape our core software stack and accelerate the development of our embodied AI systems. What You'll Work On As part of a small, high-impact engineering team, you will: Build and optimise robotics software in C++ and ROS2 Integrate perception, control, planning, and learning modules Work hands-on with robots to bring up new hardware and run real-world experiments Deploy reinforcement learning / imitation learning policies onto physical robots Develop middleware, interfaces, and tooling that connect AI → hardware Prototype behaviours across diverse robot types (arms, humanoids, mobile platforms, drones) This role directly supports both our AI and hardware teams and has significant ownership from day one. Must-haves: Strong C++ development skills (multi-threading, performance, systems-level) Professional experience with ROS2 Hands-on robotics experience - ideally robot learning on physical hardware Ability to work on real robots (debugging, integration, testing) Generalist mindset and comfort in a fast-paced startup environment Nice-to-haves: Manipulation or kinematics (humanoids, arms, quadrupeds) Controls for mobile robots or drones Sensor/actuator integration, drivers, or middleware experience VR prototyping (Meta Quest or similar) Experience across different robot embodiments Why Join Us Build software that runs on real humanoid robots immediately High ownership within a small, world-class engineering team Competitive compensation + meaningful equity Opportunity to influence architecture, roadmap, and product direction Work at one of the most exciting intersections in tech: AI Ɨ robotics
    $180k-200k yearly 1d ago
  • Senior Data/AI/ML Software Engineer

    Crossing Hurdles

    Senior java developer job in San Jose, CA

    Crossing Hurdles is a global recruitment firm partnering with, a fast-growing Clinical Data Intelligence platform built on 12+ years of advanced research in Machine Reading and Knowledge Graph technology. It automates the low-level cognitive workflows that slow down clinicians, researchers, data abstractors, and care teams - helping healthcare systems operate faster, more accurately, and more efficiently. Role: Senior Data/AI/ML Software Engineer Location: Remote US Compensation: $150K-$300K (level & location based) + 0.1%-0.5% equity YOE: 7+ years in AI/ML or full-stack SWE Visa: H1B transfers + possible new H1B sponsorship Type: Full-time Why you should consider this Build the intelligence layer behind a platform transforming clinical workflows at scale. Work with cutting-edge NLP, Machine Reading, and Knowledge Graph technologies. High-ownership role in a small, senior, research-driven engineering team (20 people). Join a company backed by $15M+ funding, growing rapidly in the healthcare AI space. Direct real-world impact: your work will be used daily by clinicians and care teams. Remote-first, high-autonomy culture with strong technical leadership. About the role Build and enhance clinical information extractors, summarizers, and automation systems. Scrape, process, transform, query, and analyze structured/unstructured clinical data. Evaluate system performance and refine the clinical knowledge graph. Develop secure, compliant code aligned with HIPAA & SOC 2. Contribute to core data/AI/ML pipelines and infrastructure. Participate in an on-call rotation to ensure system uptime. Requirements / Who is the ideal fit 7+ years of experience in AI/ML engineering or full-stack SWE. Deep hands-on experience with NLP/LLMs, data-intensive systems, and ML pipelines. Strong expertise in Python, SQL, PyTorch, GCP, FastAPI, Django, BigQuery, dbt, Pandas. Experience working with large, messy, clinical/healthcare datasets (nice-to-have). Familiarity with secure coding, privacy, and compliance standards. Must be able to work Pacific Time core hours; US-based only .
    $150k-300k yearly 1d ago
  • iOS Developer

    Raas Infotek 4.1company rating

    Senior java developer job in San Jose, CA

    San Jose, CA-onsite Contract W2 and 10+ Only JD: What you need to bring: • Bachelor's degree in computer science or a related field. • 7+ years of hands-on mobile development experience. • Experience in designing, developing and delivering software and/or platforms (libraries) • Deep expertise in mobile technologies and architecture. • Solid understanding of Cocoa Frameworks • Strong object-oriented skills including design, coding and testing patterns. • Familiarity with database technologies (SQL and NoSQL databases) and ORM frameworks (Hibernate, JPA). • Ability to design scalable, reliable, and maintainable software systems. • Thorough understanding of XCode • Proven ability to lead and influence cross-functional teams. Preferred Qualifications: • Experience with mobile payment technologies and integrations • Proficiency in Swift, Objective-C, Kotlin, Java, and React Native. • Familiarity with continuous integration (Jenkins), application monitoring (Crashlytics and fabric.io), mocking tools (Appium and Apiary), build tool development and enhancements, using unit testing and cucumber tests for functional tests • Familiar and comfortable with iOS technologies, the tradeoffs, and the design patterns emerging. • Knowledge of mobile performance optimization techniques. • Experience with machine learning and AI in mobile applications. • Strong ability to influence and inspire teams."
    $125k-167k yearly est. 4d ago
  • Senior Software Engineer - Scaling AI/FinTech Product

    Ikuto

    Senior java developer job in San Jose, CA

    Full-time Ā· On-site (San Francisco, CA) $175k-$250k + equity A high-growth VC-backed startup in the AI-driven fintech space is looking for experienced Senior Software Engineers to help expand and harden a platform used by major property and financial services organisations. The company has doubled revenue over the past year and is onboarding increasingly large customers - and now needs strong engineers who can build new product features, improve stability, and help evolve the system beyond its early-stage architecture. You'll work closely with the CTO, senior ICs, and ML/infra specialists, contributing across the stack depending on your strengths. This is a role for someone who enjoys ownership, speed, and solving difficult engineering problems rather than sitting in a narrow product lane. What You'll Work On Build and ship high-impact product features Deliver features across backend, frontend or full-stack depending on experience. Contribute directly to flows involving document analysis, fraud detection, and application processing. Improve automation, reliability and customer onboarding capabilities. Strengthen and modernise the platform Participate in refactoring, cleanup, and architectural stabilisation as the system matures. Improve code quality, observability, and long-term maintainability. Help prepare the codebase to support a much larger engineering organisation (20-40+ engineers over time). Collaborate across the engineering organisation Partner with the CTO and Staff Engineers on core initiatives. Work with ML and infra teams when projects touch model outputs, document processing, or backend systems. Join technical discussions, debugging sessions, and design reviews. What They're Looking For 4-8 years' experience in software engineering. Experience shipping production features in TypeScript/React, Node.js, Python or similar modern stacks. Background in a high-growth startup (Seed → A → B) or an environment where the engineering organisation scaled materially. Comfort working in fast-moving, ambiguous environments with evolving product needs. Evidence of increasing responsibility - promotions, expanded scope, ownership of meaningful projects. Tech Environment Frontend: TypeScript, React Backend: Node.js, Python Infrastructure: GCP Databases: Postgres, BigQuery On-site in San Francisco preferred; hybrid possible for exceptional candidates. Why This Role Stands Out Join a business with real revenue, strong growth, and top-tier backing. Build systems used in the real world by major property and lending organisations. Work directly with a very capable CTO and senior ICs who genuinely care about engineering quality. Make tangible impact across the stack - not just incremental feature work. Strong compensation package: competitive salary + meaningful equity.
    $175k-250k yearly 2d ago
  • Senior Software Engineer

    Key Talent Solutions

    Senior java developer job in San Jose, CA

    Job Title: Senior Software Engineer (Full-Stack) Employment Type: Full-time Salary: $175K - $250K per annum About Client: Our client is a Series A start up, growing quickly as they onboard new customers and scale platform, using AI to remake the way consumer underwriting is done, starting with residential real estate. Most consumers' most important financial information is locked up in documents, and we've built technology that is able to harness this data to help make better lending decisions. We've coupled this underwriting agent with advanced document and identity anti-fraud, and we're working toward democratizing sophisticated consumer underwriting for all. About the Role Seeking a Staff Software Engineer with 7-8+ years of experience to lead the re-architecture of our core platform as we scale rapidly. After two years of fast-paced product development, our system has grown into a collection of disparate services, and we need a senior IC to unify, rebuild, and streamline the foundation. This role reports directly to the CTO and plays a critical part in shaping the technical future of the company. What We're Looking For 7-8+ years of professional experience as a strong individual contributor. Deep expertise in systems design, architectural refactoring, and scaling codebases beyond the ā€œfast startupā€ phase. Experience at a high-growth startup (Seed → Series B/C) where engineering teams expanded meaningfully. Strong full-stack or backend skills (Typescript, React, Node.js, Python preferred). Ability to navigate ambiguity, make sound technical decisions with incomplete context, and iterate quickly. High engineering bar-someone who can elevate the code quality and system design of the entire team. Tech Stack Frontend: Typescript, React Backend: Node.js, Python Databases: Postgres, BigQuery, Redis Cloud: GCP Seniority & Experience 7+ years in full-stack software engineering (backend-leaning). Experience leading technical projects, refactoring code, and re-architecting systems. History of progression or promotions within startup roles (e.g., to Staff/Principal level). Education CS degree from a top 20 school What You'll Do Architect & Rebuild the Core System Re-architect major parts of the existing platform into a cleaner, scalable, and more maintainable system. Refactor or remove unnecessary code to create a cohesive architecture. Drive high-level technical decisions across backend and full-stack systems. Establish and reinforce best practices and architectural consistency across the engineering team. Lead High-Impact Feature & Infrastructure Work Collaborate with the CTO to define long-term technical direction. Work with senior and junior engineers to implement new features and improve systems. Support onboarding of larger enterprise customers by enhancing platform stability and extensibility. Own Key Product Initiatives Lead system architecture for new workflows, including real-time ID, income, and document verification. Integrate and maintain in-house ML models used for fraud detection and financial document understanding. Improve the technical foundation powering our 70%+ automated approval/denial workflow. Why Join This is a rare opportunity to join a fast-scaling Series A company with real customers and traction. You'll act as the technical adult in the room, refactoring, simplifying, and shaping the long-term architecture while influencing major product decisions. You will have a direct impact on the company's core systems and help define the foundation for future growth.
    $175k-250k yearly 1d ago
  • Full Stack Software Engineer (Python / React)

    Arrayo

    Senior java developer job in San Jose, CA

    We're seeking a Full Stack Software Engineer with strong backend development skills in Python and frontend expertise in React.js. You'll help design, implement, and scale full stack web applications that are secure, performant, and user-centric. Responsibilities Architect, build, and maintain backend services using Python (FastAPI, Flask, Django) Design and implement dynamic and responsive frontends using React.js and/or Vue.js Create and consume RESTful and GraphQL APIs Build reusable components and libraries for frontend use Collaborate across teams to gather requirements, define solutions, and ensure quality Optimize performance and scalability of applications Write unit, integration, and end-to-end tests across the stack Participate in peer code reviews and provide mentorship where appropriate Required Qualifications 5+ years of experience in full stack development M.S. degree in relevant domain required Proficiency with Python and one or more major web frameworks (e.g., FastAPI, Django) Advanced skills in React.js, including Hooks, Context, and state management libraries (e.g., Redux, Zustand) Experience with Vue.js or interest in working across multiple frontend frameworks Familiarity with modern frontend tooling: Webpack, Vite, Babel, ESLint Solid experience with HTML5, CSS3, SASS/SCSS, and responsive UI design Strong understanding of RESTful services, API security, and performance optimization Knowledge of relational databases (PostgreSQL, MySQL) and NoSQL options (MongoDB, Redis) Git and CI/CD best practices (GitHub Actions, CircleCI, GitLab CI) Strong communication skills and a collaborative approach to engineering Preferred Qualifications Familiarity with TypeScript Experience with cloud platforms (AWS, GCP, or Azure) Experience with Docker, Kubernetes, or container orchestration GraphQL and Apollo Client experience Familiarity with microservice architecture Experience working with real-time data (WebSockets, MQTT)
    $106k-150k yearly est. 5d ago
  • Software Engineer

    General Medicine 3.7company rating

    Senior java developer job in San Jose, CA

    As a software engineer at General Medicine, you'll help build and scale a healthcare store that makes it delightfully simple to shop for any type of care. We provide upfront cash and insurance prices for virtual and in-person visits, prescriptions, labs, imaging, and more. What we're looking for We're looking for strong engineers to help us build a seamless and beautiful consumer healthcare product. We're looking for folks who will obsess over every detail of our patient experience, and also tackle the complex operational challenges of delivering care at scale. We are looking for engineers who care deeply about technical excellence but are also comfortable moving quickly - we are constantly navigating tradeoffs between engineering velocity and quality. Our ideal candidate is hungry, high-agency, and aspires to be a generalist. Our engineers frequently write product requirements documents, write SQL to understand how features are performing, and own QA - no task is beneath us or outside of the scope of the role if it helps us to deliver a great product. We're looking for someone who can operate in an environment of significant ambiguity, and who is comfortable working closely with design, operations, and clinical stakeholders. We don't expect you to have a healthcare background (though it's great if you do!). However, you should be excited by the prospect of digging into the messy complexities of the American healthcare system (integrating with EHRs, revenue cycle management, etc). Qualifications 2+ years of experience building web apps as a full-stack engineer Experience with modern infra tooling and programming languages. We currently use AWS, Ruby on Rails, and NextJS, and would expect you to have proficiency in a modern tech stack even if it isn't the one we are using. Please note that this role is based in either our SF office (near Market and Spear St) or our Boston office (Central Square, Cambridge). We expect our team to work from the office least 3 days per week. Why join us We're an experienced team that has built a company in this space before, our product has clear product-market fit, and we've raised money from top investors. We have an ambitious and distinctive vision for what can be built in consumer healthcare. We believe LLMs and price transparency legislation have opened up several massive opportunities. If you're an ambitious and entrepreneurial software engineer and this resonates, please apply.
    $111k-149k yearly est. 5d ago
  • Senior Software Engineer in San Jose.

    Whatfix 4.4company rating

    Senior java developer job in San Jose, CA

    Who are we? Whatfix is an AI platform advancing the ā€œuserizationā€ of enterprise applications, empowering companies to maximize the ROI of their digital investments. Technology needs adoption. It's no different for AI. As AI reshapes roles, workflows, and human-machine interactions, it also introduces new layers of complexity and user friction. This is where Whatfix plays a pivotal role. A decade old DNA of empowering people to succeed with technology and not replacing them. We call this philosophy Userization: the belief that technology must adapt to the user, not the other way around. At the heart of userization philosophy is ScreenSense, our proprietary AI engine, which continuously interprets both the context of what users are doing in an application or an AI tool and the intent behind their actions. By combining these signals, Whatfix delivers real-time guidance, nudges, knowledge, and automation directly in the flow of work. This intelligence powers our entire product suite. Digital Adoption helps users get productive faster. Product Analytics uncovers friction and closes adoption gaps. Mirror allows employees to train in safe, simulated environments. These are ur embedded with Whatfix AI Agents which supercharge creation, insights, and user guidance. Our upcoming AI-first products are already creating a buzz in the market. Seek is an AI-native assistant that not only knows your business context but can also act across applications to get work done on your behalf. Whatfix Mirror 2.0 is the world's only System plus Role simulation with a complete assessment to lead the Gen AI simulation category. Together, these products reflect Whatfix's commitment to building enterprise-ready AI teammates that maximize productivity and ROI. It gives users a unified, intelligent way to find answers across systems, apps, and knowledge silos and helps anyone looking to deliver fast and contextual answers. Whatfix is bridging the gap between rapid technological change and human enablement-ensuring AI is not only embedded but also usable, trusted, and outcome-driven for every employee. At Whatfix, we're not just making software easier-we're making AI work for people. The company has seven offices across the US, India, UK, Germany, Singapore, and Australia and a presence across 40+ countries. Customers: 700+ enterprise customers, including 80+ Fortune 500 companies such as Shell, Schneider Electric, and UPS Supply Chain Solutions. Investors: A total of ~$270 million USD has been raised as yet. Most recently Series E round of $125 Million USD led by Warburg Pincus, with participation from existing investor SoftBank Vision Fund 2. Other investors include Cisco Investments, Eight Roads Ventures (A division of Fidelity Investments), Dragoneer, Peak XV Partners, and Stellaris Venture Partners. Whatfix's leadership is consistently recognized across top industry analysts and business rankings: Won the 2025 AI Breakthrough Award for the Overall AI-based Analytics Solution of the Year Only DAP to be recognized as a ā€œLeaderā€ across various DAP reports for the past 5+ years by leading analyst firms like Gartner, Forrester, IDC, and Everest Group. With over 45% YoY sustainable annual recurring revenue (ARR) growth, Whatfix is among the ā€œTop 50 Indian Software Companiesā€ as per G2 Best Software Awards. Named a Gartner Customers' Choice for DAP for the second year in a row (2024 and 2025)-the only vendor in the market to earn this distinction consecutively. We also boast a star rating of 4.6 on G2 Crowd, 4.5 on Gartner Peer Insights, and a super-high CSAT of 99.8% Stevie Award winner in the category (Bronze): Customer Service Department of the Year - Computer Software - 100 or More Employees. Winner of the ISG Paragon Innovation Award in partnership with Sophos (customer) for the EMEA region and finalist in the Transformation Award category. RemoteTech Breakthrough Awards winner for ā€œSoftware Asset Management Solution of the Yearā€ These recognitions are matched by business performance: Highest-Ranking DAP on 2023 Deloitte Technology Fast 500ā„¢ North America for Fifth Consecutive Year Listed on the Financial Times & Statista's High-Growth Companies Asia-Pacific 2025 list. Won the Silver for Stevie's Employer of the Year 2023 - Computer Software category and also recognized as Great Place to Work 2022-2023 Only DAP to be among the top 35% companies worldwide in sustainability excellence with EcoVadis Bronze Medal Title: Senior Software Engineer - Reliability & Kubernetes (E5) Location: San Jose, CA (Onsite), About the Role: We are looking for an experienced Software Engineer (E5) who is passionate about building systems that are resilient, observable, and designed for scale from day one. This role sits within our Reliability Engineering charter and focuses on strengthening the core platform that powers all Whatfix products - including our next-generation AI offerings. You will design and implement reliability frameworks, evolve our Kubernetes-based infrastructure, and create automation that allows engineering teams to operate their services with confidence. This is a senior individual contributor role where you will directly influence system architecture, lead reliability initiatives across teams, and mature the technical foundations required to support our enterprise and federal customers. Candidates must be authorized to work in the United States on a full-time basis without employer sponsorship, either now or in the future. What You'll Own Architect and deliver platform components that improve reliability, fault tolerance, and system performance Build reusable tooling and automation to reduce manual operations and scale reliability practices across engineering Lead the design and rollout of observability and monitoring frameworks that give teams deep visibility into their services Serve as a technical escalation point for critical incidents and drive long-term remediation through blameless RCAs Strengthen our Kubernetes platform with better automation, deployment workflows, and resource efficiency Partner with engineering, platform, and product teams to define SLIs/SLOs and embed them into how we operate services Support on-prem and regulated environment deployments by ensuring high availability and compliance requirements are met What You'll Bring Strong hands-on programming experience in Java (plus Python or Go is a bonus) Expertise running and scaling Kubernetes workloads in production environments Experience with GitOps practices and tooling (ArgoCD, Helm) Strong grounding in CI/CD, infrastructure as code, and automated deployment pipelines Background in observability (metrics, logs, traces) and designing systems that are measurable and diagnosable Proven experience driving post-incident reviews and converting findings into permanent engineering improvements Ability to break down complex distributed systems problems into practical, high-impact solutions Nice-to-Have Experience Log aggregation tools or stacks (e.g., ELK) Chaos engineering or resilience testing approaches Building internal developer platforms or reliability frameworks Exposure to large-scale or regulated enterprise environments Who Thrives in This Role Engineers who enjoy working across systems, infrastructure, and platform layers ICs who like solving ambiguous problems and setting high technical standards People who think in automation, self-healing patterns, and long-term system health Engineers who want their work to directly influence the reliability posture of company-wide products Soft Skills That Matter Strong ownership and problem-solving mindset Ability to collaborate across multiple engineering groups Clear communication, especially during high-pressure incident scenarios Mentoring and uplifting other engineers through reviews, patterns, and best practices Perks / Benefits Uncapped incentives Equity plan Mac shop, work with the newest technologies Unlimited PTO policy Paid maternity/paternity leave Monthly cell phone stipend Paid UberEats lunches-daily Medical, Dental, and Vision coverage (Whatfix pays 80% of the premium for individuals and their families; for the HSA, Whatfix contributes $1,000 for individuals and $2,000 for a family) Team and company outings Learning and Development benefits At Whatfix, we value collaboration, innovation, and human connection. We believe that working together in the office five days a week fosters open communication, strengthens our community, and drives innovation, helping us achieve our goals more effectively. To facilitate global collaboration, our US teams start and end early, while our India teams start and end late. US teams do not have any evening meetings. Relocation and Sponsorship offered. We strive to live and breathe our Cultural Principles and encourage employees to demonstrate some of these core values - Customer First; Empathy; Transparency; Fail Fast and scale Fast; No Hierarchies for Communication; Deep Dive and innovate; Trust is the foundation; and Do it as you own it. Whatfix is an Equal Opportunity Employer and an E-Verify participant. All activities must comply with our Equal Opportunity Laws, ADA, and other regulations, as appropriate. We are an equal opportunity employer and value diverse people because of and not in spite of the differences. We do not discriminate on the basis of race, religion, color, national origin, ethnicity, gender, sexual orientation, age, marital status, veteran status, or disability status. Compensation will be determined by factors such as level, job-related knowledge, skills, and experience. Due to our company's global nature and our hiring committee's span of different time zones, the interviews for this role will be recorded for those not in attendance to review.
    $131k-184k yearly est. 1d ago
  • ONLY W2 & LOCAL CANDIDATES :: Sr. Backend Software Engineer (Python) in Cupertino, CA (Hybrid Role)

    Infotree Global Solutions 4.1company rating

    Senior java developer job in Cupertino, CA

    Responsibilities: Training data pipeline development. Convert raw data into format acceptable by training jobs on GCP and AWS. Leverage internal and open-sourced training modules. Large scale inferences: Leverage internal and open-sourced inference stack to generate inferences with fine-tuned LLMs on massive amounts of data, for pre-train and post-training. Data processing and data filtering: Ability to efficiently process and filter very large amounts of data, often messy. Scalable web services backend and APIs to support data access and data inspection tools, Minimum Qualifications: 10+ years of programming experience in Python. Extensive experiences in concurrency and parallelism, functional programming, decorators. Proficient in REST API, Redis, VectorDB or other large scale data storage systems. Solid foundational programming skills (algorithms, data structures, OOP, etc). Experience designing, writing, reviewing, testing, and delivering software for applications and systems at scale. Familiarity in other programming languages (Java/GoLang/Rust/Swift). Familiarity with streaming-processing (Kafka). Familiarity with a variety of build tools (Jenkins, Maven, Docker, Gradle).
    $121k-162k yearly est. 2d ago
  • Senior Software Engineer

    Emerson United Inc.-Strategic Search and Recruitment

    Senior java developer job in San Jose, CA

    My client is building next-gen automation and orchestration platforms and needs an engineer who can design fault-tolerant, distributed systems at scale. If you've got hands-on experience with Functional Programming/Concurrency (Erlang, Elixir, Akka, Haskell) and strong distributed systems knowledge, and a track record with microservices, REST APIs, and SQL/RDBMS, this is a chance to work on real-time, high-availability systems that power automation and robotics. Bonus if you've worked with telecom-grade systems, real-time platforms, or CI/CD with Docker/Kubernetes. šŸ’” Looking for someone excited to solve complex problems, mentor others, and push the boundaries of what's possible in large-scale automation.
    $117k-163k yearly est. 1d ago
  • Senior Ruby Software Developer

    Franklin Fitch

    Senior java developer job in San Jose, CA

    Senior Software Engineer Experience Level: Senior (7+ years) About the Role We're looking for a Senior Software Engineer who thrives on turning conversations into actionable, user-focused solutions. You'll work closely with stakeholders to deeply understand problems, identify root causes, and deliver thoughtful, high-quality software that stands the test of time. Requirements 7+ years of experience designing, implementing, and testing software. Strong fluency in core software design principles. Experience with test-driven development (TDD). Familiarity with service-oriented architecture and distributed system fundamentals. Excellent ability to communicate technical concepts clearly to both technical and non-technical audiences. Bonus points for experience with Microservices, Pub/Sub, Event Sourcing, Eventide, and Message DB. Technologies We Use Languages & Frameworks: Ruby on Rails Event-Driven Tools: Eventide, Message DB Databases: PostgreSQL Infrastructure: Kubernetes, Terraform Cloud: Azure
    $117k-163k yearly est. 1d ago
  • Senior Software Engineer

    Hartleyco

    Senior java developer job in San Jose, CA

    Senior Software Engineer - YC-backed AI Platform $150K-Ā£300K + 0.25%-0.75% equity San Francisco (preferred) / Remote - with monthly SF visits Our client, a YC-backed startup with a recent $6M seed round, is on a mission to empower non-technical founders to turn ideas into scalable software businesses. Their platform bridges the gap between AI-generated code and production-ready products - delivering not just the build, but the infrastructure, tooling, and go-to-market support to help new companies succeed. This is a rare opportunity to join a high-caliber founding team (ex-serial founders with a decade of working together) and work on deep, complex engineering problems that make sophisticated tech invisible to end users. What you'll do: Design and build full-stack features from scratch - front-end, back-end, infra, and architecture Architect modular, reusable systems that scale Work closely with product and design to ship quickly without sacrificing quality Collaborate with a small, senior team that values high autonomy and zero fluff Keep pace with the latest technologies and contribute to technical direction Take ownership end-to-end - no ā€œjust my piece of the stackā€ mentality What we're looking for: 4-10 years' experience in software engineering, with strong CS fundamentals Proven 0-to-1 product experience (ideally as a Founding Engineer or early hire at a VC-backed startup) Fluency in TypeScript and React (React Native a plus) Experience with AWS, Docker, Postgres, and scalable architectures Ability to operate without heavy reliance on AI coding tools - you can code and architect from scratch Strong communicator who thrives in high-autonomy, fast-paced environments Based in or willing to relocate to SF (remote possible for exceptional candidates who can attend 3-day on-site sprints monthly) Why join? Be part of a high-bar engineering culture - every teammate is senior-level or above Ship products that help thousands of founders bring their ideas to life Competitive comp - salary at the 90th percentile for top performers, plus meaningful equity Work directly with the founders to shape the company's technical future No bureaucracy, no layers - just a flat, hands-on team moving fast If you're the kind of engineer who loves building from the ground up, hates red tape, and wants to work with an elite team solving ambitious problems, we should talk.
    $150k yearly 1d ago
  • Senior Software Engineer

    Brooksource 4.1company rating

    Senior java developer job in Morgan Hill, CA

    The Sr. Engineer will be part of a product team enhancing and sustaining enterprise systems through multiple programming platforms, primarily Java. This individual develops, maintains and improves internally developed applications and integrates with third party applications. As a Sr. Engineer, you will be helping to transform the way applications are built and how data is processed. Key Responsibilities Support the development of a modern application platform using microservices architecture, Apache Kafka, Spring Boot, Docker, and Kubernetes. Enhance and maintain customer-facing systems, including CRM and loyalty program platforms, leveraging the new architecture. Implement CI/CD pipelines, monitoring, and other DevOps best practices to ensure reliability and scalability. Mentor and support fellow engineers in adopting new technologies and engineering practices. Drive innovation by identifying and delivering high-impact technical solutions that improve project outcomes. Champion engineering excellence by promoting best practices such as code reviews, source control standards, and automated testing. Qualifications 5+ years experience in Java backend development Proficiency with the Spring Framework, experience with Sprint Boot is a plus Strong experience with both relational and NoSQL databases such as MongoDB Skilled in building RESTful APIs using JSON and/or XML Familiarity with messaging systems such as MQ, JMS, RabbitMQ, or ActiveMQ; experience with Apache Kafka is a strong plus. Understanding of containerized development using Docker; experience with Kubernetes is beneficial. Exposure to frontend technologies (HTML, CSS, JavaScript); experience with frameworks like Angular, React, or Ember is a plus but not required. Experience with build tools (Gradle, Maven, Ant) and CI/CD tools (e.g., Jenkins). Strong engineering mindset with a focus on clean code, automated testing, and peer reviews. Experience with Supply Chain or ERP systems is a plus. Proven ability to collaborate with software architects and cross-functional teams. Demonstrated leadership in mentoring and guiding other engineers. Excellent communication and team-building skills with a passion for knowledge sharing. Eagerness to learn and adopt new technologies to drive continuous improvement. Eight Eleven Group (Brooksource) provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, national origin, age, sex, citizenship, disability, genetic information, sexual orientation, gender identity, marital status, amnesty or status as a covered veteran in accordance with applicable federal, state, and local laws.
    $118k-158k yearly est. 2d ago
  • Staff Software Engineer

    1Five

    Senior java developer job in San Jose, CA

    The Role Our client is seeking a Staff Software Engineer to join a small, senior team as a highly skilled individual contributor. In this hybrid role, you'll work across the stack to build new user-facing features and develop integrations with CAD and third-party applications. You'll partner closely with product managers, AI researchers, and other engineers to turn new ideas into production-ready systems at scale. What You'll Do Design and build scalable, reliable full-stack systems using React, Node.js, and Python. Deploy an ML model to production: you've done it before, and you'll do it again: build robust products that users love. Collaborate closely with ML and data teams to integrate models and pipelines into real-world products. Architect backend systems around AWS services, databases, and modern data infrastructure. Own performance and scale: build APIs, indexes, and search systems that make high-dimensional data feel instant. Contribute to product direction: work with design, AI, and leadership to turn technical capabilities into delightful user experiences. (Optional but exciting): advance 3D visualization, geometry, or rendering engines that make engineering feel magical. What We're Looking For You're a strong generalist who can build, ship, and scale complex full-stack systems. You're fluent in React, Node.js, and Python, and comfortable designing APIs, services, and data flows end-to-end. You've shipped large production systems, ideally ones that touch ML, data, or search. You have experience with AWS databases, and you enjoy thinking about indexing, search, and vector data systems. You're pragmatic, product-minded, and enjoy owning features from concept to deployment. You collaborate naturally with AI, design, and data teams, and love turning complexity into clarity. Bonus points if: You've worked with large-scale data processing pipelines. You have an interest in math, geometry, topology, rendering, or computational geometry. You've built software in 3D printing, CAD, or computer graphics domains. This is a rare opportunity to create the interfaces, infrastructure, and experiences that bring a new kind of intelligence to the physical world, and help define how AI becomes a tool for the imagination. You love building systems that are elegant, fast, and deeply technical, and want to see them shape the real world. Let's build the tools the future will be made in. Compensation The base salary range for this role is $175,000 - $240,000, plus equity. Flexible PTO and competitive compensation. Final offers will be based on experience, interview performance, and alignment with role requirements.
    $175k-240k yearly 4d ago

Learn more about senior java developer jobs

How much does a senior java developer earn in Salinas, CA?

The average senior java developer in Salinas, CA earns between $97,000 and $171,000 annually. This compares to the national average senior java developer range of $82,000 to $137,000.

Average senior java developer salary in Salinas, CA

$129,000
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