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331 javascript react engineer jobs at 203 companies in Fairfield, CT

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Sr React Developer- New York
New York, New York, United States
$40k-$140k/yr HybridFull Time
Photon: A technology providing software and platform services for talent acquisition and hiring.
5+ YOEBachelor's degree, 5+ years frontend experience, 4+ years React experience, strong JavaScript/TypeScript, React Hooks, state management, REST/GraphQL integration, and frontend build tools.
React.js, Next.js, JavaScript (ES6+), TypeScript, Redux, Redux Toolkit, Zustand, Context API, HTML5, CSS3, Sass, Tailwind CSS, Material UI, REST, GraphQL, Jest, React Testing Library, Cypress, Vite, Webpack, Babel, npm, yarn, Git, GitHub Actions, Jenkins, Azure DevOps, AWS, Azure, GCP, OAuth2, JWT, OpenID Connect
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Senior React Developer
New York City, New York, United States
$130k-$216k/yr OnsiteFull Time
London Stock Exchange Group
London Stock Exchange GroupLondon Stock Exchange: LSEG: Provides financial market infrastructure and global data analytics services.
Strong JavaScript, TypeScript, HTML skills; cloud experience (Azure or AWS preferred); modern Agile and DevOps exposure; strong problem investigation and communication skills.
Javascript, HTML, Typescript, Azure, AWS
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Software Engineer (TypeScript/JavaScript)
Boston or Salt Lake City or San Francisco or New York City
RemoteFull Time
Databento
Databento: Provides a pay-as-you-go financial market data platform.
5+ YOEMid/senior engineer experienced with TypeScript/JavaScript, building/maintaining JS client libraries, React/Redux front-ends, native integrations (N-API/node-addon-api/Wasm), and backend work in Python or Rust.
TypeScript, JavaScript, N-API, node-addon-api, Wasm, React, Redux, Vite, Web Workers, WebSockets, Python, Rust, REST API, Storybook, Figma, CI/CD, npm
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3d
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Software Engineer, TypeScript/React
Philadelphia or New York City
$93k-$168k/yr OnsiteFull Time
T-Mobile
T-MobileNASDAQ: TMUS: Provides wireless voice, data, and mobile internet services.
2+ YOE2+ years web development with JavaScript/TypeScript and React, bachelor's degree or equivalent, strong UI development, API integration, and collaboration skills.
JavaScript, TypeScript, React, Redux
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Senior Mobile Engineer (React Native)
New York City, New York, United States
$210k-$270k/yr HybridFull Time
dYdX
dYdX: Operates a decentralized exchange for cryptocurrency perpetual contracts.
5+ YOE5+ years software engineering experience with production React Native apps, proficiency in JavaScript/TypeScript, mobile architecture, iOS/Android publishing, testing, performance optimization, and cross-functional collaboration.
React Native, JavaScript, TypeScript, iOS, Android, Swift, Kotlin, React Query, Redux, Zustand, CI/CD
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Sr. Software Engineer (React Native)
Shelton, Connecticut, United States
$119k-$149k/yr OnsiteFull Time
Subway
Subway: Global restaurant chain specializing in made-to-order submarine sandwiches.
6+ YOE6+ years software engineering experience; strong JavaScript, Node.js, ReactJS and React Native skills; experience with REST APIs, unit/integration testing, CI/CD, version control, databases; BS in CS or equivalent preferred.
JavaScript, Node.js, ReactJS, React Native, REST APIs, CI/CD
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2mo
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Full Stack Engineer (C#/React)
New York, New York, United States
$101k-$134k/yr OnsiteFull Time
Rockstar Games
Rockstar Games: Creates and publishes world-class open-world video games.
3+ YOE3+ years React (TypeScript/JavaScript); 3+ years C#; 2+ years T-SQL; 2+ years source control (Perforce preferred); knowledge of web development best practices and Agile; strong communication in international team.
C#, React, TypeScript, JavaScript, MSSQL, Perforce, T-SQL, Redis, MongoDB, Elasticsearch, npm, NuGet
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Lead Software Engineer, Front End (React)
New York, New York, United States
$215k-$246k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOEBachelor’s degree; 4+ years software engineering; 1+ year cloud experience; preferred Master’s; 7+ years in React/JavaScript/Angular/Node/TypeScript; 4+ years open source; 1+ year people management; 2+ years Agile; AI tooling experience.
JavaScript, React, Angular, Node, TypeScript, HTML, CSS, Java, RESTful APIs
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Lead UI Engineer — React, TypeScript, Design-Led, AI-Driven Interfaces
Jersey City, New Jersey, United States
$152k-$215k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
7+ YOE7+ years software engineering experience with deep JavaScript/TypeScript and advanced React expertise; experience with responsive design, performance optimization, REST APIs, testing, WCAG accessibility, agile teamwork, and responsible AI-assisted development practices.
JavaScript, TypeScript, React, REST APIs, Redux, Zustand, React Query, Figma, CI/CD
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6d
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Staff Software Engineer, HR Experiences
Denver or San Francisco or New York City
$199k-$247k/yr HybridFull Time
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
8+ YOE8+ years software development experience; experience with Ruby on Rails, JavaScript/React; building AI agents; mentoring engineers; compliance-domain experience preferred.
Ruby on Rails, JavaScript, React, Claude Code, Codex
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1w
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Lead JAVA FS Developer - REACT
New York, New York, United States
$102k-$168k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
Hands-on Java/J2EE backend and React frontend development experience with Spring Boot, Spring MVC, Hibernate/JPA, RESTful APIs, RDBMS, and modern frontend technologies.
Java, J2EE, Spring Boot, Spring MVC, Hibernate/JPA, React, HTML5, CSS3, JavaScript, TypeScript, MySQL, PostgreSQL, Oracle, Git, Maven, Gradle, CI/CD
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1mo
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Staff Design Systems Engineer
Pittsburgh or New York City
OnsiteFull Time
Blink Health
Blink Health: Digital platform for affordable prescription medications and pharmacy access.
7+ YOE7+ years front-end or UI engineering experience; strong proficiency in React and JavaScript; experience contributing to frontend design systems; Figma, Storybook, prototyping, accessibility and UI performance skills; strong communication.
React, JavaScript, Cursor, GitHub Copilot, ChatGPT, Figma, Storybook
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1mo
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Associate Engineer
New York or United States
$81k-$100k/yr RemoteFull Time
Presidio
Presidio: Global provider of cloud, cybersecurity, and digital infrastructure solutions.
1+ YOEBachelor's in CS/CE or related and 1 year programming experience. Experience with Jersey/Spring, Postgres/MySQL, NoSQL (Cassandra, Couchbase, Elasticsearch, MongoDB), AWS/Azure, JIRA, Docker, Gradle, Git, Java, JavaScript (Node/Angular/React), and Python.
Jersey framework, Spring framework, Postgres, MySQL, Cassandra, Couchbase, Elasticsearch, MongoDB, AWS, Azure, JIRA, Docker, Gradle, Git, Java, JavaScript, Node, Angular, React, Python
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Senior Forward Deployed Engineer
New York, New York, United States
$160k-$200k/yr HybridFull Time
Accrete AI
Accrete AI: AI agents that automate complex decision-making through knowledge engines.
5+ YOE5+ years engineering or technical deployment experience; full‑stack proficiency; production coding and system design; experience with Python, JavaScript/TypeScript, Node.js, React; APIs, integrations, LLMs/AI; customer-facing delivery and up to 50% travel.
Python, JavaScript, TypeScript, Node.js, React, APIs, LLMs, generative AI, knowledge graph, semantic search, retrieval systems
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1w
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System Design Engineer - AI Cluster Software Engineer
Austin or Santa Clara or Secaucus or Markham
$133k-$200k/yr HybridFull Time
AMD
AMDNASDAQ: AMD: Designs and manufactures computer processors and graphics technology.
5+ YOE5+ years software development experience; daily use of AI coding assistants; frontend (JavaScript/TypeScript, React/Angular/Vue), backend services, Linux, containers, CI/CD, cloud/on-prem deployment, testing and production support.
JavaScript, TypeScript, React, Angular, Vue, Linux, perf, flamegraphs, nvprof, rocprof, eBPF, ROCm, RCCL, EPYC, Slurm, Kubernetes, Apptainer, Singularity, Ansible, Terraform, Python, bash, Lustre, BeeGFS, RDMA, CI/CD
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2w
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Staff Engineer - Fullstack
Dresden or Berlin or Chemnitz or New York City or London or Sydney or Tokyo or Prague or Minneapolis or Saint Paul
HybridFull Time
Staffbase
Staffbase: Provides an AI-powered internal communications platform for employees.
Proven staff-level engineering experience with Go and React, architecture and design knowledge, strong communication, and experience driving cross-team technical initiatives.
React.js, Javascript, Typescript, Tailwind CSS, Kotlin, Go, Java, MongoDB, Terraform, Docker, Playwright
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1mo
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Lead Engineer, Secure Client Engineering
United States or New York City or Reston
$168k-$183k/yr RemoteFull Time
College Board
College Board: Provides standardized testing and resources for college and career readiness.
8+ YOE8+ years production software development with significant native desktop or platform-level experience; deep C++ and lower-level Windows expertise; familiarity with JavaScript/TypeScript, React, Node.js, Swift, GitHub, and AWS; mob programming and US work authorization required; travel 3-5x/yr.
C++, JavaScript, TypeScript, React, Node.js, Swift, GitHub, AWS, Win32 APIs, Assembly
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3w
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Senior Software Engineer
Toronto or Europe or New York City or London
RemoteFull Time
Inspiration Commerce Group
Inspiration Commerce Group: Acquires and operates digital commerce brands in fashion and lifestyle.
Product-minded engineer experienced with JavaScript, React and Node; comfortable owning features end-to-end, using AI copilots, scoping with stakeholders and validating production outcomes.
JavaScript, React, Node, Claude Code, Cursor
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Lead Performance Web Engineer
New York or United States
HybridFull Time
Polymarket
Polymarket: A decentralized platform for trading on real-world event outcomes.
Proven web performance engineering at scale, technical leadership, proficiency in JavaScript/TypeScript, deep understanding of rendering, caching, CDN strategy, observability, and measurement-driven performance optimization.
JavaScript, TypeScript, Next.js, React, V8, Core Web Vitals
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Senior Software Engineer
New York City or Washington or Austin or San Francisco
$195k-$235k/yr OnsiteFull Time
Method Financial
Method Financial: Connects financial accounts and processes debt payments via API.
5+ YOE5+ years software engineering experience; expert knowledge of JavaScript, Python or Java; experience with Node and React; building scalable production systems; strong communication and debugging skills.
JavaScript, JS, Node, React, Python, Java, AWS, Cloudflare, CI/CD, ACH, RTP
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