Reactor Engineer remote jobs - 263 jobs

A specialized talent firm is seeking a Front-End Engineer in San Francisco. The role involves designing and building impactful features using React and TypeScript, collaborating closely with teams, and shaping engineering culture. The ideal candidate has 3-10 years of experience primarily in front-end development and a strong foundation in modern JavaScript tooling. This opportunity offers a competitive salary between $160,000 and $250,000 and a hybrid work setup. #J-18808-Ljbffr

A cutting-edge technology startup based in San Francisco is looking for a Full-Stack Engineer to build modern tools for recruiters and job-seekers. The ideal candidate will have over 3 years of professional experience in developing Web applications and expertise in frontend frameworks like React. Strong communication skills are a must for explaining technical concepts effectively. This role offers the flexibility to work from anywhere, contributing to exciting challenges as one of the early team members. #J-18808-Ljbffr

A leading car sharing platform in San Francisco is seeking a Staff Software Engineer to integrate machine learning models into their product experience. You will collaborate with various teams, build scalable systems, and ensure high-quality code. Ideal candidates will have over 7 years of experience and a strong background in software development and machine learning technologies. Competitive salary and hybrid work schedule offered. #J-18808-Ljbffr

A leading software development company is looking for a Senior Software Engineer skilled in Node.js and React to work on a greenfield project. The ideal candidate will develop applications that meet business requirements, ensure security standards, and collaborate with a Scrum team. This role involves building responsive UI components and implementing microservices. Candidates must be based in the European Union. #J-18808-Ljbffr

An AI research platform is seeking Nuclear Engineer Professionals for a remote, hourly, temporary project. The role involves evaluating AI models in the nuclear field without requiring prior AI experience. Responsibilities include developing prompts for AI systems and delivering structured feedback based on professional expertise. Candidates should have at least 4 years of relevant experience and be comfortable working independently. This opportunity offers flexible hours and the potential for future projects. #J-18808-Ljbffr

A technology solutions provider located in the United States is seeking a Senior Software Engineer to develop and maintain scalable web applications. The ideal candidate will have strong expertise in React and Python, with responsibilities including code development, debugging, and collaboration with cross-functional teams. A Bachelor's degree in a related field and proven experience are essential. This role offers a competitive salary and opportunities for professional growth and development. #J-18808-Ljbffr

A financial technology company in San Francisco is seeking a Staff Software Engineer for the Customer Onboarding Platform. The role involves designing and developing modern backend services, tackling technical debt, and mentoring a high-impact team. Ideal candidates have 8+ years of software engineering experience and a strong background in full-stack systems design. Competitive salary range offered is $208,000 - $285,000 USD annually, along with comprehensive benefits. #J-18808-Ljbffr

At Sift, we're redefining how modern machines are built, tested, and operated. Our platform gives engineers real-time observability over high-frequency telemetry-eliminating bottlenecks and enabling faster, more reliable development. Sift was born from our work at SpaceX on Dragon, Falcon, Starlink, and Starship-where scaling telemetry, debugging flight systems, and ensuring mission reliability demanded new infrastructure. Founded by a team from SpaceX, Google, and Palantir, Sift is built for mission-critical systems where precision and scalability are non-negotiable. As an early engineer focused on our data infrastructure, you won't just write code-you'll define core architecture and help scale a real-time telemetry platform from the ground up. You'll work on complex backend systems designed to ingest, store, and serve millions of high-frequency data points per second, enabling faster iteration cycles for some of the most advanced engineering teams in the world. In This Role, You'll: Design and build a horizontally scalable platform for ingesting millions of hardware sensor data points per second Develop durable, efficient database solutions to support real-time reads and large-scale analytics workloads Pioneer data architecture by integrating recent innovations in streaming and storage, including cloud-native and diskless designs Help define engineering culture, standards, and processes Collaborate closely with peers on architecture, design, code reviews, and scaling strategies The Skillset You'll Bring: Bachelor's degree in Computer Science, Engineering, Physics, or another STEM discipline 7+ years of experience in backend, infrastructure, or data engineering roles Hands-on experience with event-time-based stream processing or streaming SQL systems using tools like Apache Flink, Kafka Streams, Beam, or similar Proficiency with relational and time-series databases like PostgreSQL, Druid, Pinot, TimescaleDB, or equivalent Experience with large-scale distributed systems or low-latency backend services, ideally written in Go, Rust, or Python Familiarity with DevOps and cloud infrastructure tools such as Kubernetes, Prometheus, ArgoCD, and Terraform Strong communication skills and a collaborative approach to problem-solving Bonus Points: Familiarity with telemetry data from hardware systems, high-throughput ingest pipelines, or columnar storage formats like Apache Arrow and Parquet Experience building resilient, performant systems that scale to billions of records Curiosity about new data paradigms and eagerness to evaluate and integrate emerging tools and techniques Engineering at Sift: You'll join a tight-knit team of world-class engineers building foundational systems for next-gen machines. Technologies you'll work with may include: Frontend & Backend: Go, gRPC, PostgreSQL, Protobuf, React, TypeScript Data Infrastructure: Apache Arrow, DataFusion, Flink, Kafka, Parquet, Rust Ops & Tooling: AWS, Kubernetes, Docker, GitHub Actions, Prometheus, Argo CD, Grafana, Linux Location: The Sift team is based in El Segundo, CA, and we collaborate in person twice a week-Mondays and Thursdays. We work closely with LA's leading hardware companies, from autonomous vehicle manufacturers to spacecraft builders. Proximity matters for site visits and deep collaboration, so we prefer candidates local to Los Angeles. We are open to relocation and for exceptional talent we're open to remote work from the San Francisco Bay Area. Salary range: $200,000 - $250,000 per year. Plus equity and benefits. Eligibility: Due to the nature of our work, U.S. Citizenship or Green Card status is required to meet ITAR / EAR compliance requirements. #J-18808-Ljbffr

A leading crypto platform in San Francisco seeks a Staff Application Security Engineer to protect its operations and customers. This role requires expertise in application security, leading security reviews, and threat modeling. Ideal candidates will have 7-10 years of relevant experience and strong communication skills. The position offers a competitive salary range, hybrid work options, and comprehensive benefits. Join a dynamic team dedicated to reshaping the financial landscape through blockchain technology. #J-18808-Ljbffr

About the Team The web is entering a new chapter, one where digital teams and intelligent agents build, evaluate, and integrate faster than ever. We are looking for a Staff GTM Software Engineer to join our GTM team and help accelerate Netlify's mission to build the modern web - for humans and agents. This role is a force multiplier for Netlify's GTM organization, sitting at the intersection of engineering, revenue operations, and AI innovation. You'll own how GTM data and systems connect - building the foundation that enables intelligence, automation, and speed across Sales, Marketing, and Customer Success. What you create will directly accelerate revenue outcomes, unlock customer value, and shape how our platform serves the next wave of developer productivity and agent-driven applications. From connecting our tools to deploying AI-powered automations, you'll ensure our revenue stack operates as a cohesive, intelligent ecosystem. This role blends software engineering with strategic go-to-market impact, designing internal tools, AI workflows, and systems that multiply revenue team performance and deepen customer value. As our founding Staff GTM Software Engineer, you'll play a pivotal role in connecting customer needs, GTM execution, and the future of AX by helping position Netlify as the world's best platform for modern build teams and the intelligent agents that increasingly support them. What You'll Do Use your expertise in full-stack development to ship internal tools, dashboards, and workflows that unify data from sales, marketing, and product usage, enabling faster, smarter decisions and making GTM data accessible and actionable for stakeholders. Design integrations and automate workflows across Netlify's GTM systems, stitching together data flows between tools like 6sense, Clearbit, Crossbeam, HubSpot, Salesforce, Snowflake, etc. to create a single source of truth. Turn real user and GTM pain points into technical solutions that improve conversion, speed time-to-value, and guide customers through both human- and agent-driven journeys. Apply foundational engineering practices - testing, documentation, observability, and performance optimization - while pragmatically leveraging AI tools to enhance your development workflow. Partner closely with RevOps, Data, and Engineering teams to align GTM tooling with PLG strategies and company-wide intelligence. Practice proactive async communication and create visibility across projects by documenting your workflows and decision-making clearly. Systematize top GTM practices into repeatable, scalable systems that level up the entire organization. Experiment rapidly with product and platform capabilities; provide tight feedback loops to engineering and product. Bring real-time market and agent-driven adoption learnings into AX roadmap conversations and influence product priorities. Help shape the future of how revenue orgs operate in a world where builders, businesses, and autonomous agents all interact with Netlify. What You'll Bring Extensive full-stack software engineering or systems development experience, with a strong focus on backend integrations, APIs, and automation. Proficiency in TypeScript and JavaScript, with a strong track record in building and maintaining full-stack systems. Excitement around building in a zero-to-one environment and shipping high-impact internal tools that drive measurable business impact. Preferred familiarity working with GTM, CRM, or data systems (HubSpot, Salesforce, Snowflake, or similar) and connecting them through well-structured code. Interest or experience in AI-powered workflows, LLMs, or agent-driven systems, and curiosity to apply them to real business processes. Comfortable using and experimenting with AI-assisted development tools, with a sense for when and how to apply them effectively. Experience writing high-quality, testable code that's reliable and maintainable over time. Strong problem-solving mindset and an ability to translate messy data or scattered systems into elegant, maintainable solutions. Comfortable translating GTM needs into technical decisions and vice-versa - connecting data, CRM, and engagement systems like 6sense, Clearbit, HubSpot, Salesforce, LinkedIn, Gong, etc. into unified, intelligent workflows. Strong written and verbal communication skills, especially in asynchronous, remote-first environments. Motivated to explore how AI tooling and agent experience can improve GTM execution and customer experience. Critical thinking abilities and a solution-oriented approach to complex technical challenges. This Role is a Great Fit If You are based in Canada or the US, and want to work on a fully remote team that believes in autonomy, transparency, and building a better web, together. You enjoy working at the intersection of software engineering, AI, and customer experience. You're a systems builder at heart - someone who loves connecting APIs, cleaning up data chaos, and creating elegant internal tools that just work. You're motivated by enabling others: the systems you build make GTM, Marketing, and Success teams smarter, faster, and more data-informed. You thrive in ambiguity, shaping structure from scattered tools and disconnected workflows. You're energized by solving complex data and integration challenges at scale. You want to grow into a hybrid space - engineering, data, and GTM strategy - where your technical skill drives tangible business outcomes. See AI as a multiplier for your skills, not a shortcut - and can articulate where it helps, where it doesn't, and how you use it. You're excited by new tools, challenges, and opportunities to grow - even when they feel a little uncomfortable at first. Applying Not sure you meet 100% of our qualifications? Please apply anyway! When applying please include: A resume or short listing of your job history & skills (link to a LinkedIn profile would be fine). We appreciate a cover letter explaining why you would enjoy working in this role at Netlify to get to know you a bit better, though this is not required and will not impact your application. Our mission is to “build a better web” and that cannot be done without a diversity of skill sets, backgrounds and thoughts. Of everything we've ever built at Netlify, we are most proud of our team. Netlify is an Equal Opportunity Employer. We are devoted to building a team of people with diverse backgrounds and lifestyles. Driving equality empowers our team, enables us to innovate, and helps us maintain a more inclusive environment. We don't discriminate against employees or applicants based on gender identity or expression, sexual orientation, religion, age, race, military/veteran status, citizenship, pregnancy status, or any other differences. If we can do anything to provide a better interview, i.e. accommodate a disability, then please let us know by emailing accommodations@netlify.com. About Netlify Netlify is the most popular way to build, deploy, and scale modern web applications, empowering everyone from fast moving solo developers to enterprise teams. Millions of developers and organizations rely on Netlify as their platform of choice for composing web applications that are production ready, performant, and flexible. Now, as we embrace the next era of software development, we are embedding the same fluid, intuitive experience into the Agent Experience (AX), making it just as simple for intelligent agents to understand, interact with, and act on our platform as it is for developers. Whether your user is human or machine, Netlify ensures the path from idea to URL is seamless, fast, and deeply reliable. We are a Series D company that has raised over $200M from investors such as Andreessen Horowitz, Kleiner Perkins, EQT, Bessemer, BOND, and Menlo Ventures. As a fully distributed company, we aim to create a company culture where the best idea can come from anywhere and strive to be thoughtful, compassionate, and collaborative in our work. If this sounds like something you'd like to be part of, we're excited to connect with you! At Netlify, we are committed to a compensation philosophy that prioritizes fairness and equity, positions our employee compensation competitively in the market, recognizes and rewards performance, and takes a comprehensive approach to our rewards package. We anchor our compensation philosophy on a market-based approach, therefore salary ranges may differ depending on the labor cost in a particular location. The salary provided is in addition to robust benefits and participation in Netlify's equity plan. Our approved hiring salary range for this role is targeted at $157,000 - $194,000 for most US-based locations. This role is also eligible to participate in Netlify's commission plan. Candidates outside the US or in premium markets should consult with their Talent Acquisition partner regarding location-based ranges, as they may be higher or lower than the average US range listed. The starting pay will be determined based on multiple factors, including expertise and skills, market demands, experience, internal equity, and applicable geographic location. These compensation packages and ranges are subject to change and may be modified in the future. #J-18808-Ljbffr

A leading crypto venture firm is seeking a Staff Frontend Engineer to build high-performance decentralized applications. This role involves designing frontend architecture, integrating smart contracts, and optimizing user experiences. Ideal candidates are passionate about crypto and familiar with modern frontend frameworks. The firm offers opportunities for remote work across its global portfolio companies. #J-18808-Ljbffr

A prominent charitable platform is seeking a Staff Software Engineer to lead the development of their social graph infrastructure. In this role, you will focus on scaling graph databases and collaborating with cross-functional teams to enhance user trust and engagement. The ideal candidate will have over 8 years of experience in the field, strong expertise in graph theory, and a proven track record of designing high-performance pipelines. Enjoy competitive pay, comprehensive healthcare benefits, and the chance to make a positive impact in people's lives. #J-18808-Ljbffr

A progressive insurance technology company in San Francisco seeks an experienced individual to spearhead the development of an AI insurance platform. This role involves building data-intensive backend systems and owning the full machine learning lifecycle. The ideal candidate has over 8 years of experience and a strong background in ML, particularly NLP. Additionally, the company values a balanced working culture and supports remote work, fostering a collaborative and innovative environment. #J-18808-Ljbffr

Lexsy is an AI-native law firm building predictive legal intelligence. We create agentic systems that continuously monitor a company's data, identify legal events, propose actions, and execute them - with lawyers in the loop. Our platform already supports high-growth startups (including companies now valued at $500M+), and we're scaling toward a multi-agent architecture spanning workflows, validation, supervision, and real-time triggers across Slack, HR systems, cap tables, data rooms, and financial tools. This is a foundational technical leadership role. As Lexsy's Staff Engineer, you will own core architectural decisions, lead complex execution, and set the technical standard for how we build AI-powered legal systems. You won't be handed tickets. You'll be trusted to define solutions. What you'll be responsible for: 1. End-to-end problem ownership For any technical problem, you're expected to independently determine: The right technical approach Whether AI is appropriate - or not Architecture and tooling choices Scope, timelines, and team allocation Risks, edge cases, and trade-offs Your decisions should reflect deep technical judgment and experience operating in ambiguous, high-stakes environments. 2. AI judgment & discretion Not everything should be solved with LLMs - and knowing the difference matters. You will: Partner with product to decide when AI adds value vs. when deterministic systems are safer Anticipate and mitigate common LLM failure modes (hallucinations, brittleness, edge cases) Apply industry-standard patterns for reliability, validation, and human-in-the-loop systems 3. Engineering leadership & execution You'll lead major initiatives and guide engineers through them. This includes: Working closely with junior engineers, product leads, and legal domain experts Translating legal workflows into scalable, maintainable systems Setting and enforcing high standards for code quality, architecture, and documentation Making decisions independently - without needing constant oversight 4. Ship fast, without cutting corners We value speed, but not chaos. You'll operate with: Rapid prototyping using LLMs and agents Tight execution cycles and fast feedback loops A strong bias toward shipping - while protecting system integrity and long-term maintainability What you'll build in your first 90 days Automated legal workflows (e.g., generating documents for a company's first priced Series Seed round) API integrations with platforms like Slack, Carta, and internal data sources Event-driven systems and scrapers to detect real-time legal signals (e.g., copyright violations) What we're looking for Core Requirements 5-8+ years of professional software engineering experience 1+ year hands-on building with LLMs (OpenAI, Anthropic, Hugging Face ecosystem) Strong systems design and architectural thinking Experience deploying and scaling systems on AWS or similar cloud platforms High code quality standards; ability to design APIs and interfaces others can build on Experience mentoring or managing junior engineers Comfort operating in fast-moving startup environments Nice to have Experience with legal or compliance-driven workflows Integrations with HR systems, billing, cap tables, or data rooms Availability in US or Canada time zones How you operate We care as much about how you think as what you build. You likely: Have strong technical judgment Thrive in ambiguity and incomplete information Create clarity for others Take full ownership of outcomes, not just tasks What we offer: Full-time job (8 working hours per day, Monday-Friday). Please note that we will not consider candidates planning to combine this job with another one. Remote work. You may be located in almost any country, just need a good Internet connection, a powerful computer to work from, and the opportunity to adjust your working schedule for the team (from 9 am to 5 pm New York time). Innovative environment. Work with business leaders building cutting-edge AI solutions in a high-growth market. Stability. This is not project work, we consider only the candidates looking for a long-term commitment of 2+ years. Salary will be discussed during the interview. Paid in USD. Application deadline: ASAP Hire5 provides aspiring talents worldwide with remote opportunities to enhance their careers in Silicon Valley startups and other US-based companies. Interested in joining one of the most promising US startups? Press here to apply now or click 'connect' on career.hire5.co to subscribe for future opportunities in your desired profession! #J-18808-Ljbffr

A leading AI healthcare company in San Francisco seeks a Staff Software Engineer to design and build core infrastructure for healthcare providers. The role includes setting foundations for observability and reliability in an AI platform, requiring over 5 years of engineering experience and proficiency in modern stacks like AWS and Docker. This position offers competitive compensation and a hybrid working model. #J-18808-Ljbffr

A future-focused healthcare AI company in San Francisco is seeking a Staff Machine Learning Engineer to architect and maintain their machine learning infrastructure. In this role, you will develop cloud-native services and support advanced AI research to improve clinical outcomes. Ideal candidates should have 8+ years in ML Engineering, with strong Python skills and experience in cloud-native environments. This position also offers flexible working arrangements within a supportive team environment. Your contributions will have a meaningful impact on patient care. #J-18808-Ljbffr

A leading tech company in San Francisco is seeking a Staff Engineer to lead critical frontend initiatives. You will build the infrastructure for a real-time collaborative editor and lead frontend optimization. With 8+ years of experience in web applications, you'll contribute to AI-powered features and mentor other engineers. The company values a creative, collaborative culture and provides opportunities for innovative development. #J-18808-Ljbffr

A dynamic tech startup in San Francisco is seeking an experienced staff-level software engineer to join their front-end development team. This role involves leading best practices and developing a world-class team. Candidates should have 6+ years of front-end web development experience, particularly with Typescript and React. The position offers a competitive salary of $180,000 - $220,000 with equity options and flexible work conditions. #J-18808-Ljbffr

Looking to join a world-class blockchain development team? Ava Labs makes it simple to deploy high-performance solutions for Web3, led by innovations on Avalanche. The company was founded by Cornell computer scientists, who partnered with Wall Street veterans and early Web3 leaders to execute a promising vision for redefining the way people build permissionless networks. Ava Labs is redefining the way people create value with Web3. Join us as we empower people to easily and freely digitize all the world's assets on one open, programmable blockchain platform. We are looking for a Staff Engineer to join our Platform Engineering Group. This team is responsible for maintaining and advancing the EVM for the Avalanche blockchain and its ecosystem. WHAT YOU WILL DO Maintain and advance Avalanche's EVM-compatible chains. Design and implement paradigm-shifting extensions on top of vanilla EVMs, without breaking ecosystem compatibility. Here are some specific examples of projects you will contribute to: libevm (repo): the EVM as a library; a backwards-compatible fork of geth with injectable configuration directives to minimise merge conflicts. Streaming Asynchronous Execution (spec / talk / repo): decoupled consensus and execution, allowing for always-on, concurrent execution without forced dormancy. WHAT MAKES YOU A GOOD FIT A self-starter with insatiable curiosity, combined with being comfortable diving into someone else's code to understand. Please mention the word GLEEFUL and tag RMjYwMDoxOTAwOjA6MmQwMTo6MjkwMA== when applying to show you read the job post completely (#RMjYwMDoxOTAwOjA6MmQwMTo6MjkwMA==). This is a beta feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human. Job type: Remote job web3 code engineer engineering #J-18808-Ljbffr