Post job

Senior java developer jobs in San Mateo, CA

- 6,996 jobs
All
Senior Java Developer
Software Engineer
Software Developer
Lead Java Developer
  • Lead Java Developer

    Hadiamondstar Software Solutions LLC

    Senior java developer job in Mountain View, CA

    Responsibilities: 70-85% hands-on software development across all SDLC phases. Conduct design and code reviews; create technical documentation. Contribute to our DevOps model. Estimate and sequence development activities. Analyze inputs to create software and services. Identify technical dependencies. Collaborate with engineers and architects. Qualifications: Experience with unit/integration/functional/e2e test automation. Advanced experience with Java , Spring Boot, Kafka, Kubernetes, GitHub, JUnit 4/5. Experience with Agile development methodologies (Scrum). Hands-on experience with AWS Experience with large-scale, distributed systems. Strong communication skills. Experience with debugging and monitoring tools
    $114k-155k yearly est. 4d ago
  • Software Developer

    Astreya 4.3company rating

    Senior java developer job in San Francisco, CA

    Astreya is a leading global provider of game-changing IT Managed Services and technology solutions to some of the world's most recognizable and innovative organizations. Through our people, processes, and proprietary technologies, we accelerate innovation- driven growth and transform technology into a company's most valuable resource. We are looking to add a Principal Software Developer to support one of our clients On-site in Seattle WA. What you'll be doing: -Design and launch cloud services from the ground up -Engineer new runtimes top operate demanding high availabilty workloads -Deliver core data-plane components and tools driving performance and improvements. Who we are looking for: We're seeking self-motivated technical leaders who thrive on solving system-level and data-plane architecture challenges at scale. As an expert developer, you'll deep-dive into low-level systems, designing highly scalable solutions for networking and storage. You have a proven record of shipping major features to production, and deep expertise in high-scale public cloud-particularly at the data-plane level. Basic Qualifications: BS or MS in Computer Science (or equivalent experience) 5+ years' experience building robust, distributed services in high-performance development environments Demonstrated ability to write high-quality code in C/C++, Go, or similar languages Strong grasp of data structures and algorithms; experience optimizing for scale Deep background in networking data-plane architectures (DPU-based or DPDK-based solutions) Astreya offers comprehensive benefits to all Regular, Full-Time Employees, including: Medical provided through Cigna (PPO, HSA, EPO options) / Medical provided through Kaiser (HMO option only) for California employees only Dental provided through Cigna (DPPO & DHMO options) Nationwide Vision provided through VSP Flexible Spending Account for Health & Dependent Care Pre-Tax Account for Commuter Benefit/Parking & Transit (location-specific) Continuing Education and Professional Development via various integrated platforms, e.g. Udemy and Coursera Corporate Wellness Program Employee Assistance Program Wellness Days 401k Plan Basic Life, Accidental Life, Supplemental Life Insurance Short Term & Long Term Disability Critical Illness, Critical Hospital, and Voluntary Accident Insurance Tuition Reimbursement (available 6 months after start date, capped) Paid Time Off (accrued and prorated, maximum of 120 hours annually) Paid Holidays Any other statutory leaves, paid time, or other fringe benefits required under state and federal law
    $99k-133k yearly est. 4d ago
  • Perception Software Engineer

    Evona

    Senior java developer job in San Francisco, CA

    Software Engineer - Perception | San Francisco - Onsite EVONA is partnering with a pioneering aerospace company developing a new generation of autonomous spacecraft systems. Their mission is to build advanced autonomy and perception pipelines that allow satellites to detect, classify, and understand objects in orbit in real time. This is a rare opportunity to join as one of the first US software hires, giving you direct impact on a high-profile space program while shaping the growth of the US software team. What You'll Do Develop and optimise computer vision & ML algorithms for real-time object detection and characterisation Integrate perception models into onboard flight computers and autonomy pipelines Build sensor models, digital twins, and simulation tools for training and validation Collaborate with international engineering teams while helping expand the US presence Contribute across a small, fast-moving team tackling complex, mission-critical challenges What We're Looking For Strong software engineering skills in C++ and Python Must of worked on Real Time Operating Systems (RTOS) Experience with computer vision, ML frameworks (PyTorch, TensorFlow), and CUDA acceleration Background in real-time/embedded systems, edge computing, or robotics Hands-on experience with perception systems in autonomy, drones, robotics, AR/VR, or self-driving vehicles Minimum 2 years' experience (open to junior through senior levels) Space industry experience not required - we're seeking autonomy and perception engineers who thrive on solving complex, real-world problems Why Join Impact: Apply your autonomy expertise to one of the most exciting frontiers of engineering Ownership: Join as one of the first 3 US hires, shaping both technology and team direction Growth: Help build a US team that will scale significantly in the next phase Compensation & Benefits: $170,000 - $250,000+ depending on level Equity participation Full medical, dental, and vision coverage 401(k) with company match Flexible PTO and paid leave Location & Requirements San Francisco Must be US Citizen, Green Card holder, or ITAR-eligible For more information, contact Ciara Holmes at EVONA or apply now to take your autonomy career to the next frontier.
    $170k-250k yearly 16h ago
  • Platform Software Engineer | Backend

    Crossing Hurdles

    Senior java developer job in San Francisco, CA

    Crossing Hurdles is a global recruitment firm partnering with a category-leading AI company in the financial services space. Our client powers mission-critical compliance automation for top fintechs and regulated banks worldwide including platforms trusted by institutions overseen by the OCC, FDIC, and SEC. With millions of compliance cases processed monthly and rapid market adoption, they are entering an intense engineering scale-up phase and expanding their platform team significantly over the next eight weeks. Why you should consider Build the platform that powers AI-driven compliance for top global fintechs and banks Work on systems with 99.9%+ uptime requirements across thousands of daily cases Join a hyper-growth engineering team during a company-defining scale phase Tackle challenging distributed systems problems - ingestion, workflows, orchestration, observability Hybrid SF culture + a streamlined 2.5-hour onsite interview process High-impact work in one of the fastest growing markets in AI + a standout brand for your next chapter Role: Software Engineer, Platform Compensation: $168k-$213k base + competitive equity Location: Hybrid (San Francisco, CA - 2nd & Howard, 3 days/week) Tech Stack: TypeScript, Node.js, Python, SQL, PostgreSQL YOE: 3-8 years building backend systems in high-scale environments About the role Help build and operate the core infrastructure that enables compliance at scale for major financial institutions. Work in a backend-leaning, platform-focused capacity owning critical systems end-to-end. Design and build APIs that support high-volume, high-reliability workloads. Run and optimize distributed workflows powering long-running, stateful processes. Architect systems designed to handle thousands of concurrent requests with strict uptime requirements. Thrive in an early-stage, high-ownership environment where engineers shape core product decisions. Contribute to a high-trust engineering culture focused on impact, autonomy, and deep technical execution. Requirements 3-8 years of backend engineering experience, ideally in high-scale or regulated systems Strong skills in TypeScript/Node or Python, plus SQL and PostgreSQL fundamentals Experience with distributed systems, queues, or orchestration (Temporal, Airflow, etc.) Comfort owning deployments, IaC, reliability, and on-call responsibilities Clear communicator who understands trade-offs and can work cross-functionally in a fast-moving team
    $168k-213k yearly 5d ago
  • Software Engineer

    Acceler8 Talent

    Senior java developer job in San Francisco, CA

    🚀 Software Engineer - AI & Full Stack (San Francisco, CA) 💼 Full-Time | 🧠 1-4+ Years Experience | 💰 $150,000- 210,000 We're building self-improving software - AI that continuously creates, tests, and enhances digital experiences. Backed by Y Combinator, Gradient, and leaders from OpenAI, Uber, and Meta, we've raised $5M+ and are scaling fast. If you love building things that think for themselves , this is your chance to help shape the next wave of intelligent software. 🧩 What You'll Do Build an AI-powered paywall editor serving millions of users every day. Work across the stack - Next.js frontend + Python backend - integrating the latest AI models & APIs. Ship fast: design → code → test → deploy → learn → repeat. Collaborate directly with founders, engineers, and customers to deliver exceptional user experiences. ⚡ What We're Looking For Strong problem-solving and full-stack skills (Python, React, TypeScript). Experience building user-facing products that people love. Excellent communication and a bias for action. Ownership mindset - you ship things that matter. Startup experience = BONUS BSc CompSc degree preferred 💡 Bonus Points Experience with AI/LLM integrations. Startup or founder-level experience. Mobile skills (Swift, Flutter, React Native). 🧠 Tech Stack Next.js (React/TypeScript), Zustand, Tailwind, Shadcn, Python, Supabase, Fly.io, Swift, Flutter, Expo 📍 In-person role - San Francisco (Mon-Sat) U.S. work authorization required (O-1 visa sponsorship possible). If you're ready to build AI that builds software, we'd love to hear from you. 👉 Apply now and help us invent the future of intelligent systems.
    $150k-210k yearly 2d ago
  • Robotics Software Engineer - Defense

    Strativ Group

    Senior java developer job in San Francisco, CA

    Robotics Software Engineer - Application Layer / High-Level San Francisco, CA (On-Site) $140,000 - $200,000 + Equity + Benefits U.S. Persons Only Are you passionate about cutting-edge robotics and real-time systems? Our client - an innovative, venture-backed robotics company - is developing next-generation autonomous platforms that push the limits of perception, control, and intelligent decision-making. They are looking for a Robotics Software Engineer to take ownership of the application layer that brings their robots to life. This is a unique opportunity to help shape real-world, mission-critical robotics technology alongside a small team of exceptional engineers. What You'll Do Architect, develop, and optimize the high-level application layer software for autonomous systems. Build and maintain real-time data pipelines connecting perception, planning, and control systems. Drive Sim2Real workflows - taking simulation code to live hardware environments. Collaborate closely with perception, controls, and hardware teams to integrate and test software across multiple robotic platforms. Profile and optimize performance for low-latency and resource-constrained environments. Contribute to world-class system architecture, clean codebases, and robust documentation. Occasionally assist with real-world field testing and system validation (some travel involved). What We're Looking For Strong proficiency in C++ and Python. Experience architecting and refactoring real-time systems under performance constraints. Deep familiarity with ROS2 (or equivalent robotics middleware). Experience building low-latency data pipelines linking perception → planning → control. Proven ability to debug and optimize complex interactions between hardware, middleware, and application logic. Excellent communication and documentation habits. Self-starter who thrives in a fast-paced, problem-solving environment. Bonus Points Personal or open-source robotics projects (e.g., UAVs, autonomous systems). Experience with RTOS or safety-critical software. Understanding of control theory or computer vision principles. Awareness of cybersecurity concepts relevant to autonomous systems. Why Apply? You'll be joining a team of highly driven engineers tackling real-world robotics challenges with immediate impact. If you're excited by the idea of architecting the brains behind autonomous machines - and you thrive in hands-on, high-performance environments - this is your chance to make a difference.
    $140k-200k yearly 4d ago
  • Software Engineer

    Premier Group 4.5company rating

    Senior java developer job in San Francisco, 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 (“two-way door”) 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 “cool tech” 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 4d ago
  • Software Engineer

    Skale 3.7company rating

    Senior java developer job in San Francisco, CA

    I'm hiring an AI Product Engineer for a fast-growing AI start-up that's building agents to automate financial crime workflows. Their tech works like a real analyst inside a browser and internal tools, helping banks cut huge amounts of manual work and stop fraud more effectively. They're small, highly technical, and already seeing strong traction with major institutions. In this role, you'll work across the stack, build end-to-end features, shape new agent capabilities, and help ship production systems that have real impact for customers. We're looking for engineers who: Love building quickly and owning problems end to end Have experience with production systems or AI/ML workflows Communicate clearly and enjoy working with minimal process Want to push what's possible with AI agents in the real world Minimum Bachelor's degree in Computer Science (or adjacent) Their stack is Python, Node, React and Typescript (not a dealbreaker to be experienced with these!) Apply or reach out directly if you're interested!
    $123k-169k yearly est. 2d ago
  • Software Engineer - Runtime

    Oho Group Ltd. 3.7company rating

    Senior java developer job in Santa Clara, CA

    We're a Series A and we need a systems-savvy engineer who can architect, optimize, and turbocharge our multi-target runtime from day one. If concurrent programming is your playground, C++14 is your native language, and you think in cache lines, pipelines, and memory hierarchies, this role puts you at the heart of the action. What You'll Do Design, build, and continually improve our multi-target runtime Apply cutting-edge parallelization + partitioning techniques to generate and exploit highly optimized kernels Rapidly prototype ideas and validate them with real data What You Bring Deep expertise in asynchronous + concurrent programming 4+ years of modern C/C++ Strong grasp of hardware architecture (scalar vs vector, memory hierarchies, etc.) Knowledge of OS kernel or hypervisor development Bonus Points CUDA/ROCm library experience GPU programming background HPC experience MS/PhD in CS or equivalent Familiarity with PyTorch, JAX, Triton Experience wrangling large compute clusters Why You'll Love It You'll own critical, performance-sensitive systems that sit at the core of our stack; shaping how next-gen ML models run across diverse hardware. High impact, deep tech, zero bureaucracy. If you want to engineer at the limits of performance and help build a runtime that changes the game let's talk!
    $122k-168k yearly est. 16h ago
  • Front-end Software Engineer SF

    Affinity North 4.7company rating

    Senior java developer job in San Francisco, CA

    Front-End Software Engineer On-site: San Francisco Our client is an exciting new hedge fund, well capitalized, that was started by a pair of renowned industry veterans. We seek a Senior Frontend Developer who thrives on building intuitive user interfaces leveraging modern UI technologies. In this role, you'll be instrumental in defining our frontend architecture, developing sophisticated applications rom scratch, and working closely with other teams to deliver smooth, well-integrated user experiences. ________________________________________ Primary Duties • Develop advanced, reusable UI components using React and TypeScript • Architect scalable and maintainable frontend solutions • Manage features throughout their lifecycle-from ideation to release and upkeep • Work with backend engineers to define APIs • Write high-quality, well-tested, and clearly documented code • Support/mentor junior team members • Actively work to stay current on new technologies • On-call rotations as needed • Agile process ________________________________________ Requirements • CS degree or practical experience • 3+ years' experience • Expert in TypeScript and React • Demonstrated ability to build UI components from the ground up • Understanding and passion for modern frontend design principles/architecture • Passion for UX • RESTful and/or GraphQL API structures • Cloud: AWS, GCP, or Azure • Project leading experience • Comfortable with frontend testing and quality assurance practices
    $112k-161k yearly est. 3d ago
  • ONLY W2 & LOCAL CANDIDATES :: Full Stack Software Engineer in Cupertino, CA (Hybrid Role)

    Infotree Global Solutions 4.1company rating

    Senior java developer job in Cupertino, CA

    Skills Required: Database Design: Strong SQL skills (PostgreSQL or MySQL preferred). Backend Development: Python (Flask/Django) or Node.js. Frontend Development: HTML/CSS/JavaScript (React, Vue, or similar framework). Data Modeling: Experience structuring relational databases. CRUD operations: Building forms for creating/updating data (Preferred). Experience building calculation engines or formula-based tools. Previous work on pricing calculators, configurators, or similar applications. Understanding of manufacturing or costing concepts. Clean, maintainable code practices. Basic documentation skills.
    $106k-143k yearly est. 2d ago
  • Software Engineer, AI Data Platform

    Granica

    Senior java developer job in Mountain View, CA

    Granica is redefining how enterprises prepare and optimize data at the most fundamental layer of the AI stack-where raw information becomes usable intelligence. Our technology operates deep in the data infrastructure layer, making data efficient, secure, and ready for scale. We eliminate the hidden inefficiencies in modern data platforms-slashing storage and compute costs, accelerating pipelines, and boosting platform efficiency. The result: 60%+ lower storage costs, up to 60% lower compute spend, 3× faster data processing, and 20% overall efficiency gains. Why It Matters Massive data should fuel innovation, not drain budgets. We remove the bottlenecks holding AI and analytics back-making data lighter, faster, and smarter so teams can ship breakthroughs, not babysit storage and compute bills. Who We Are World-renowned researchers in compression, information theory, and data systems Elite engineers from Google, Pure Storage, Cohesity, and top cloud teams Enterprise sellers who turn ROI into seven‑figure wins. Powered by World-Class Investors & Customers $65M+ raised from NEA, Bain Capital, A* Capital, and operators behind Okta, Eventbrite, Tesla, and Databricks. Our platform already processes hundreds of petabytes for industry leaders Our Mission: We're building the default data substrate for AI, and a generational company built to endure. Smarter Infrastructure for the AI Era: We make data efficient, safe, and ready for scale-think smarter, more foundational infrastructure for the AI era. Our technology integrates directly with modern data stacks like Snowflake, Databricks, and S3-based data lakes, enabling: 60%+ reduction in storage costs and up to 60% lower compute spend 3x faster data processing 20% platform efficiency gains Trusted by Industry Leaders Enterprise leaders globally already rely on Granica to cut costs, boost performance, and unlock more value from their existing data platforms. A Deep Tech Approach to AI We're unlocking the layers beneath platforms like Snowflake and Databricks, making them faster, cheaper, and more AI-native. We combine advanced research with practical productization, powered by a dual-track strategy: Research: Led by Chief Scientist Andrea Montanari (Stanford Professor), we publish 1-2 top-tier papers per quarter. Product: Actively processing 100+ PBs today and targeting Exabyte scale by Q4 2025. Backed by the Best We've raised $60M+ from NEA, Bain Capital, A Capital, and operators behind Okta, Eventbrite, Tesla, and Databricks. Our Mission To convert entropy into intelligence, so every builder-human or AI-can make the impossible real. We're building the default data substrate for AI, and a generational company built to endure beyond any single product cycle. WHAT YOU'LL DO This is a deep systems role for someone who lives and breathes distributed infrastructure, understands how data moves at scale, and wants to build the next-generation AI data platform from the ground up. Own the ACID backbone. Design and harden transactional layers and metadata services so that petabyte-scale tables can time-travel in microseconds and schema evolution becomes a non-event. Turn metadata into rocket fuel. Build compaction, caching, and pruning services that keep millions of file pointers within 50 ms from lookup to plan. Squeeze more signal per byte. Optimize data layouts-from column ordering to dictionary and bit-packing, bloom filters, and zone-map indexes-to cut scan I/O by 10× on real-world workloads. Ship adaptive indexing with research. Co-invent machine-driven indexes that learn access patterns and automatically re-partition nightly-no more manual “analyze table” ever again. Scale the engine, not the babysitting. Write Spark, Flink, or batch pipelines that autoscale across S3, GCS, and ADLS; expose observability hooks; and survive chaos drills without triggering a pager storm. Code for longevity. Write clean, test-soaked Java, Scala, Go, or C++. Document key invariants so future teams can extend the system-instead of rewriting it. Measure success in human latency. If analysts see their dashboards refresh in blink-level time, you've won. Publish your breakthrough and mentor the next engineer to raise the bar again. WHAT WE'RE LOOKING FOR You've built systems where performance, resilience, and clarity of design all matter. You thrive at the intersection of infrastructure engineering and applied research, and care deeply about both how something works and how well it works at scale. Core Skills Distributed Systems and Storage Fundamentals - consistency, replication, sharding, durability, transactions. Columnar Storage Optimization - deep knowledge of Parquet or similar formats (column ordering, compression, zone maps). Metadata and Indexing Systems - experience building metadata-driven services, compaction, caching, and adaptive indexing. Distributed Compute at Scale - production-grade Spark/Flink or equivalent pipeline development across S3, GCS, or ADLS. Programming for Scale and Longevity - strong coding in Java, Scala, Go, or C++, with clean testing and documentation practices. Resilient Systems and Observability - you've built systems that survive chaos drills and expose the right metrics. Desired Skills Exposure to open table formats such as Apache Iceberg, Delta Lake, or Hudi. Experience with catalog services, query planning, or compaction frameworks. OSS contributions or published work in data infrastructure or distributed systems. WHY JOIN GRANICA If you've helped build the modern data stack at a large company-Databricks, Snowflake, Confluent, or similar-you already know how critical lakehouse infrastructure is to AI and analytics at scale. At Granica, you'll take that knowledge and apply it where it matters most…at the most fundamental layer in the data ecosystem. Own the product, not just the feature. At Granica, you won't be optimizing edge cases or maintaining legacy systems. You'll architect and build foundational components that define how enterprises manage and optimize data for AI. Move faster, go deeper. No multi-month review cycles or layers of abstraction-just high-agency engineering work where great ideas ship weekly. You'll work directly with the founding team, engage closely with design partners, and see your impact hit production fast. Work on hard, meaningful problems. From transaction layer design in Delta and Iceberg, to petabyte-scale compaction and schema evolution, to adaptive indexing and cost-aware query planning-this is deep systems engineering at scale. Join a team of expert builders. Our engineers have designed the core internals of cloud-scale data systems, and we maintain a culture of peer-driven learning, hands-on prototyping, and technical storytelling. Core Differentiation: We're focused on unlocking a deeper layer of AI infrastructure. By optimizing the way data is stored, processed, and retrieved, we make platforms like Snowflake and Databricks faster, more cost-efficient, and more AI-native. Our work sits at the most fundamental layer of the AI stack: where raw data becomes usable intelligence. Be part of something early-without the chaos. Granica has already secured $65M+ from NEA, Bain Capital Ventures, A* Capital, and legendary operators from Okta, Tesla, and Databricks. Grow with the company. You'll have the chance to grow into a technical leadership role, mentor future hires, and shape both the engineering culture and product direction as we scale. COMPENSATION & BENEFITS Competitive salary and meaningful equity Unlimited PTO + quarterly recharge days Premium health, vision, and dental Team offsites, deep tech talks, and learning stipends Help build the foundational infrastructure for the AI era Granica is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
    $106k-150k yearly est. 1d ago
  • Full Stack Software Engineer (Python / React)

    Arrayo

    Senior java developer job in San Francisco, 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. 2d ago
  • Software Engineer for AI Startup

    Xcede

    Senior java developer job in San Francisco, CA

    A cutting edge AI startup based in San Francisco is looking for a founding engineer to own backend of their code generation platform. Software should be beautiful, and this firm aims to provide generative creativity, allowing users to explore endless designs from a single idea. This role is for an engineer who is passionate about building sophisticated, performant, and scalable backend systems for AI-powered design tools. The ideal candidate will have a proven track record of impactful work at companies known for their sophisticated backend engineering, major contributions to notable open-source projects, or a seriously impressive portfolio of complex backend builds. Experience with chat applications, reliable streaming, headless browser automation (Puppeteer/Chromium), and managing complex project state is highly desirable. Express.js, Next.js (server actions), AWS (infrastructure primitives), Terraform, Pulumi, SST, OpenAI SDK, Anthropic SDK, Gemini SDK, Puppeteer, Chromium 180-235k base + equity
    $106k-150k yearly est. 2d ago
  • Software Engineer - AI Agent Infrastructure (Healthcare)

    Honey Health

    Senior java developer job in San Francisco, CA

    Honey Health is the all-in-one AI back office for primary and specialty care. Our AI agents autonomously handle core back-office jobs, such as aggregating patient data, processing orders and prescriptions, automating prior authorizations, triaging faxes and referrals, and managing RCM (revenue cycle management). Organizations using Honey frequently cut administrative costs in half while improving staff/patient satisfaction and increasing revenue. Built with enterprise-grade security and privacy, our platform delivers real operational transformation. About the Role Honey Health is seeking a Software Engineer to help build leading AI Agent systems that transform healthcare operations. In this role, you will contribute to designing and implementing the infrastructure for training and deploying highly useful AI Agents in healthcare. Our team's mission is to create seamless, robust platforms for AI Agents - enabling them to operate at scale and perform complex tasks safely and autonomously. You'll work closely with AI researchers, product teams, and operations teams to help translate cutting-edge technical research into impactful healthcare applications, automating back-office work and improving patient care. The ideal candidate is passionate about building AI Agents (especially in healthcare) and is motivated to learn, deliver high-quality work, and contribute to safe and beneficial AI systems. This is a full-time role based in the U.S., offering the opportunity to contribute to innovation at the intersection of AI and healthcare. Is This You? You're fired up about Agentic AI and ready to help shape the future of healthcare. You're joining at the perfect moment to build transformative AI agents, and you're here to learn fast and contribute boldly. You're deeply driven to make a meaningful impact - contributing to team culture at Honey, redefining value for healthcare providers and patients, and pushing the boundaries of innovation in one of the most impactful industries. You don't just solve problems - you take on challenging ones with ambition and drive. You bring energy, even in the face of complexity, aiming for excellence when it matters most. You bring initiative - sparking ideas, asking good questions, and supporting the team to explore ambitious paths in a fast-moving, open and exploratory environment. If these describe you, we should definitely talk. In this role, you will: Contribute to building and improving next-generation AI agent infrastructure to train and deploy healthcare AI agents, helping ensure the platform is efficient, reliable, and scalable for production environments. Assist with integrating the latest LLM advancements and in-house research into the agent platform, leveraging generative AI and (where applicable) reinforcement learning to enhance agent capabilities. Prototype features and integrations for AI agents with real healthcare data and services - supporting reliable, safe automation in complex workflows (e.g., automating administrative tasks) - and help implement secure, sandboxed execution to support robust operations. Collaborate with healthcare experts and cross-functional partners to turn novel AI research into practical features, and work with pilot customers and clinicians to validate and refine value in healthcare. Write clean, tested code and contribute to code quality, reliability, and monitoring practices to deliver an excellent experience for healthcare users. You might thrive in this role if you: 3+ years of industry-related experience. Are motivated by using AI as a force for innovation, care improvement, and system-wide change in healthcare. Have exposure to or interest in building AI and agentic systems (e.g., tool-calling stacks, orchestration frameworks), with familiarity or willingness to learn tools like LangChain, context engineering techniques, and RL-enhanced agents. Enjoy building new things quickly and iterating with the team; excited to learn how to scale systems as products grow. Bring a product mindset with a focus on quality and user impact; you care about technically sound solutions that improve end-user workflows and you value iterative improvement, testing, and delivering useful features. Are committed to continuous learning and improvement, with attention to detail and a growth mindset. Join us at Honey Health and apply your skills and curiosity in AI agents to solve real-world healthcare challenges. You will contribute to a new era where Agentic AI systems meaningfully improve healthcare - from reducing administrative burden to enabling better patient care - all while working with a team that values innovation, safety, and impact. We look forward to your curiosity, ownership, and drive in pushing the boundaries of what AI agents can do in healthcare. Apply now to help shape the future of health with us.
    $106k-150k yearly est. 3d ago
  • Software Engineer (Computer Vision, Robotics)

    Autonomous Healthcare

    Senior java developer job in Santa Clara, CA

    About Us At Autonomous Healthcare, we are at the forefront of medical innovation, developing the next generation of devices that will revolutionize patient care. Our mission is to commercialize breakthrough medical technologies by leveraging cutting-edge AI and autonomous systems. We believe that the best solutions are built together, and we are looking for a key member to join our collaborative R&D team. About the Role We are seeking a highly motivated and skilled engineer to join our team in developing next-generation patient monitoring systems. This role is at the intersection of computer vision, signal processing, and high-performance software engineering. You will be responsible for building the core analytical engine that transforms raw depth-sensor video into actionable health information. This is not a purely theoretical position. You will be hands-on, designing algorithms that are efficient enough for real-time applications and robust enough for real-world clinical use. You will write the production-level Python code that brings these algorithms to life on cutting-edge edge computing platforms. If you are a problem-solver who thrives on analyzing complex sensor data and building tangible, high-performance systems, we want to hear from you. Key Responsibilities Develop and implement real-time computer vision algorithms in Python to detect, track, and analyze regions of interest from video data (specifically depth sensors). Design and build signal processing pipelines to extract, filter, and interpret physiological movement data from sensor signals. Optimize algorithms for performance to meet strict real-time processing requirements. Deploy and validate analysis software on edge computing platforms with GPU acceleration (e.g., NVIDIA Jetson). Collaborate in a multidisciplinary team to integrate your solutions into a complete monitoring product. Rigorously test, debug, and document your code and algorithms. Required Qualifications Strong proficiency in Python and experience writing clean, efficient, and maintainable code. Solid foundation in computer vision principles and hands-on experience with libraries like OpenCV. Solid foundation in digital signal processing (e.g., filtering, time-series analysis, feature extraction) and experience with libraries like SciPy or NumPy. B.S. or M.S. in Computer Science, Robotics, Electrical Engineering, Biomedical Engineering, or a related technical field. Demonstrable experience in analyzing imaging or sensor data to solve complex problems. Excellent problem-solving skills and the ability to work independently and as part of a team. Preferred Skills (We'd love to see these) Experience with high-performance edge computing platforms (e.g., NVIDIA Jetson). Familiarity with GPU programming (e.g., CUDA, TensorRT) for accelerating algorithms. A background in robotics, autonomous vehicles, or real-time analysis of sensor data (e.g., LiDAR, RADAR, IMU). Experience with depth sensors, 3D data processing, or point cloud analysis. Knowledge of machine learning or deep learning frameworks (e.g., PyTorch, TensorFlow) for vision or time-series tasks. Familiarity with software development best practices (e.g., Git, unit testing, CI/CD).
    $106k-150k yearly est. 4d ago
  • Robotics Software Engineer

    Hcltech

    Senior java developer job in Santa Clara, CA

    HCLTech is looking for a highly talented and self- motivated Robotics Software Engineer to join it in advancing the technological world through innovation and creativity. Job Title: Robotics Software Engineer Position Type: Fulltime Location: East Brunswick NJ or Santa Clara CA As a Robotics Software Engineer, you will bring business value to our clients through the development, optimization, and implementation of robotic software solutions. You will use the latest technologies and frameworks to create efficient and reliable robotic systems. We are seeking experienced professionals for our open position. What will You do: Develop robot control algorithms to enhance robotic functionality. Implement simulation scenarios to test and validate robotic behaviors. Write Python/C++ scripts to program robot behavior and interactions. Integrate simulation environments with ROS/ROS2 for seamless operation. Conduct performance tests and troubleshoot software issues. Collaborate with hardware engineers to ensure software-hardware compatibility. Qualifications: We want to hear from you if you have: Experience in robotics software engineering. Solid knowledge of Python programming, robot kinematics, and control theory. Experience with simulation frameworks and ROS/ROS2. Professional level of English (written and oral). Excellent problem-solving, analytical, and communication skills. Intelligent, communicative team-player personality, interested in and willing to learn new skills and technologies. Pay and Benefits Pay Range Minimum: $120000 per year Pay Range Maximum: $130000 per year HCLTech is an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, color, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, or any other protected classification, in accordance with federal, state, and/or local law. Should any applicant have concerns about discrimination in the hiring process, they should provide a detailed report of those concerns to ****************** for investigation. A candidate's pay within the range will depend on their skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year How You'll Grow At HCLTech, we offer continuous opportunities for you to find your spark and grow with us. We want you to be happy and satisfied with your role and to really learn what type of work sparks your brilliance the best. Throughout your time with us, we offer transparent communication with senior-level employees, learning and career development programs at every level, and opportunities to experiment in different roles or even pivot industries. We believe that you should be in control of your career with unlimited opportunities to find the role that fits you best.
    $120k-130k yearly 4d ago
  • Software Engineer

    Flexton Inc.

    Senior java developer job in San Jose, CA

    Role: Software Engineer (Java Backend) Type: W2 Contract (no C2C or 3rd party candidate) Required Skills & Experience BS or MS in Computer Science Engineering or Related field with 5+ years of backend development experience. Background in enterprise applications with focus on retail/eCommerce domain. Strong hands-on coding in Java, Spring, Spring Boot/Microservices. Hands on Experience in API Development and Kafka Streaming/Message Queue. Proven experience in DSA, System Design, and distributed systems. Expertise with RDBMS & NoSQL databases. Strong problem-solving, analytical, and debugging skills. Ability to work independently and deliver high-quality, production-ready code. Thanks & Regards, Neha Singh ************************
    $106k-150k yearly est. 2d ago
  • Software Engineer

    Premier Group 4.5company rating

    Senior java developer job in Fremont, 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 (“two-way door”) 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 “cool tech” 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 4d ago
  • Front-end Software Engineer SF

    Affinity North 4.7company rating

    Senior java developer job in Fremont, CA

    Front-End Software Engineer On-site: San Francisco Our client is an exciting new hedge fund, well capitalized, that was started by a pair of renowned industry veterans. We seek a Senior Frontend Developer who thrives on building intuitive user interfaces leveraging modern UI technologies. In this role, you'll be instrumental in defining our frontend architecture, developing sophisticated applications rom scratch, and working closely with other teams to deliver smooth, well-integrated user experiences. ________________________________________ Primary Duties • Develop advanced, reusable UI components using React and TypeScript • Architect scalable and maintainable frontend solutions • Manage features throughout their lifecycle-from ideation to release and upkeep • Work with backend engineers to define APIs • Write high-quality, well-tested, and clearly documented code • Support/mentor junior team members • Actively work to stay current on new technologies • On-call rotations as needed • Agile process ________________________________________ Requirements • CS degree or practical experience • 3+ years' experience • Expert in TypeScript and React • Demonstrated ability to build UI components from the ground up • Understanding and passion for modern frontend design principles/architecture • Passion for UX • RESTful and/or GraphQL API structures • Cloud: AWS, GCP, or Azure • Project leading experience • Comfortable with frontend testing and quality assurance practices
    $111k-161k yearly est. 3d ago

Learn more about senior java developer jobs

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

The average senior java developer in San Mateo, CA earns between $97,000 and $173,000 annually. This compares to the national average senior java developer range of $82,000 to $137,000.

Average senior java developer salary in San Mateo, CA

$129,000

What are the biggest employers of Senior Java Developers in San Mateo, CA?

The biggest employers of Senior Java Developers in San Mateo, CA are:
  1. Atrium
  2. Cygnus Professionals
  3. R A Communications
  4. Jobsbridge
Job type you want
Full Time
Part Time
Internship
Temporary