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129 javascript react engineer jobs at 87 companies in Waltham, MA

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React Developer_CVS_Woonsocket, RI
Woonsocket or Rhode Island
$40k-$140k/yr OnsiteFull Time, Contract
Photon: A career site recruiting technology professionals and contractors.
Expertise with React 18+, JavaScript (ES6+), and TypeScript; state management (Redux Toolkit, Context API, Zustand); application telemetry (Application Insights/OpenTelemetry); testing with Jest and React Testing Library; performance optimization.
React, React 18+, JavaScript (ES6+), TypeScript, Redux Toolkit, Context API, Zustand, Application Insights, OpenTelemetry, Jest, React Testing Library
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2mo
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Senior Front End Software Developer (AI, React, JavaScript) - Remote US
Waltham or United States
$130k-$158k/yr RemoteFull Time
Revvity
RevvityNYSE: RVTY: Sells laboratory equipment and diagnostic tests for healthcare research.
3+ YOE3-4+ years frontend JavaScript/React experience; UI/UX, Agile; experience with React/TypeScript and AI tooling; remote-friendly, collaborative.
JavaScript, TypeScript, React, AI tools
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1w
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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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1mo
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Senior Full Stack Engineer (Java/React)
Dedham or Taunton
$137k-$145k/yr OnsiteFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Designs and manufactures defense and mission-critical technology solutions.
5+ YOEBachelor's in Software Engineering or related field and 5+ years experience (or Master's +3). Requires DoD Secret clearance and U.S. citizenship. Experience with Java, React/JavaScript, SQL/PostgreSQL, Hibernate, Spring; REST APIs; Agile preferred.
Java, React, SQL, PostgreSQL, JavaScript, Hibernate, Spring, Wildfly, REST API, RESTCONF, Material UI, SNMP, Public Key Infrastructure (PKI), Digital Certificate
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1mo
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Senior Full Stack Engineer(React, Node.JS)
Boston, Massachusetts, United States
$155k-$175k/yr RemoteFull Time
Linus Health
Linus Health: Digital health platform providing AI-powered cognitive assessment tools.
5+ YOE5+ years software engineering experience with expertise in React and Node.js, 3+ years building RESTful services, strong JS/TypeScript tooling experience, frontend performance optimization, and excellent communication.
React, Node.js, JavaScript, TypeScript, Webpack, Vite, Babel, ESLint, Jest, Cypress, Playwright, React Native, iOS, Swift, D3, Victory, Recharts, Temporal, Aurora Postgres, Java
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2w
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Senior Software Engineer - Computational Platform
Watertown, Massachusetts, United States
$154k-$200k/yr HybridFull Time
Dyno Therapeutics
Dyno Therapeutics: Designs AI-powered AAV vectors for targeted gene therapy delivery.
6+ YOE6+ years software engineering experience; cloud (GCP/AWS), Terraform, Kubernetes/Docker, data modeling, Python, React/JavaScript, strong engineering best practices and security.
GCP, AWS, Terraform, Kubernetes, Docker, Python, React, JavaScript, SQL, ETL, LLMs
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1w
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Senior Full Stack Engineer
Somerville, Massachusetts, United States
$120k-$165k/yr OnsiteFull Time
AgZen
AgZen: AI-powered precision agriculture technology for optimized crop spraying.
5+ YOEBachelor's or equivalent,5+ years engineering experience,proficiency in JavaScript/TypeScript and React,Python or Go preferred,experience with SQL/ORMs.
JavaScript, TypeScript, React, Python, Go, SQL, ORMs
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2d
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Software Engineer II (Full Stack, Growth)
Boston, Massachusetts, United States
$125k-$175k/yr OnsiteFull Time
WHOOP
WHOOP: Wearable technology for personalized health and performance tracking.
2+ YOE2+ years professional software engineering experience; proficiency with JavaScript/TypeScript, React, RESTful APIs, and PostgreSQL; strong communication and problem-solving; willing to relocate to Boston.
JavaScript, TypeScript, React, RESTful APIs, PostgreSQL
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Software Engineer
Waltham, Massachusetts, United States
$100k-$120k/yr HybridFull Time
Allego
Allego: Provide a modern revenue enablement platform for sales teams
3+ YOE3+ years experience; strong web development skills with JavaScript/React/TypeScript and Java/J2EE; experience debugging with browser dev-tools; Agile collaboration and BS degree preferred.
JavaScript, jQuery, React, TypeScript, Chakra UI, Emotion, Java, J2EE, Browser dev-tools, TanStack Table, Axios, React Hook Form, Yup, Jotai, Immer, Git, Struts 2, JSP, Spring MVC, Webpack, Vite, React Testing Library, WebdriverIO, ESLint, Stylelint, SCSS, OAuth, OIDC, SAML, AWS SDK
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1mo
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UI Engineer
Boston or New York City
HybridFull Time
OnCorps
OnCorps: Automating financial fund operations with domain-specific AI agents.
5+ YOE5+ years frontend experience; strong JavaScript/TypeScript, HTML5, and modern CSS; experience with React or Angular, Storybook.js, RESTful/GraphQL APIs, design systems, accessible and scalable UI architecture.
React, Angular, JavaScript, TypeScript, HTML5, CSS, Storybook.js, RESTful APIs, GraphQL
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4w
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UI Engineer
Boston or New York City or Atlanta
$80k-$100k/yr HybridFull Time
Invesco
InvescoNYSE: IVZ: Provides diversified investment management services and financial products globally.
5+ YOE5+ years front-end development with JavaScript/TypeScript and React/Angular, NodeJS experience, RESTful API and SQL knowledge, automated UI testing, EM, mentoring and strong communication skills.
JavaScript, TypeScript, NodeJS, HTML, CSS, Material UI, Styled Components, ES6, React, Angular, Redux, Next.js, RTK Query, NPM, Nx, Bitbucket, Python, SQL
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1mo
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Senior Software Engineer, Mobile
Bethesda or Waltham
$140k-$220k/yr HybridFull Time
ZoomInfo
ZoomInfoNASDAQ: GTM: Provides B2B contact data and sales intelligence software.
6+ YOE6+ years mobile development experience with React Native, strong JavaScript/TypeScript skills, state management (Redux/MobX), testing (Jest, React Native Testing Library), cross-platform iOS/Android production experience, and mentoring ability.
React Native, JavaScript, TypeScript, Redux, MobX, Jest, React Native Testing Library, RESTful APIs, GraphQL, Node.js, CI/CD
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1mo
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Senior Engineer, Software Development Engineering
Boston, Massachusetts, United States
$131k-$163k/yr HybridFull Time
Analog Devices
Analog DevicesNASDAQ: ADI: Designs and manufactures semiconductors for signal processing and power management.
2+ YOEMaster's in CS/CE (or equivalent) and 2 years software engineering experience; demonstrated expertise with Python and TypeScript/JavaScript, testing, containerization/Kubernetes, EKS/AKS, SQL/NoSQL, and frameworks like Fast API, Flask, or React.
Python, TypeScript, JavaScript, Kubernetes, EKS, AKS, Fast API, Flask, React, SQL, NoSQL
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2d
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Engineer
Boston, Massachusetts, United States
$90k-$95k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
2+ YOEProficiency in JavaScript/ES6+, React.js, TypeScript, HTML5/CSS3, front-end build tools, Git; Bachelors in Computer Science; 2+ years software engineering experience.
JavaScript, React.js, TypeScript, HTML5, CSS3, Tailwind CSS, Material-UI, styled-components, Webpack, Vite, npm, yarn, Git
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1w
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Associate Software Engineer
Concord or Cambridge
$95k-$105k/yr HybridFull Time
KAYAK
KAYAK: Global travel search engine for flights, hotels, and rentals.
Foundational proficiency in HTML,CSS,JavaScript; experience with React and exposure to TypeScript; familiarity with Git; degree or equivalent practical experience; strong communication and collaborative skills.
React, TypeScript, Git, Claude Code, HTML, CSS, JavaScript
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Software Engineer: Web Developer
Cambridge, Massachusetts, United States
$110k/yr OnsiteFull Time
Nanobiosym
Nanobiosym: Portable nanotechnology platforms for rapid, real-time disease detection.
Bachelor's degree in CS or related; strong HTML, CSS, JavaScript; experience with Vue, React or Angular; CMS knowledge (WordPress/Joomla); UI/UX and graphic design skills; REST API development; Agile and test-driven practices.
HTML, CSS, JavaScript, Vue, React, Angular, WordPress, Joomla, REST API, CI/CD, git, GitHub, GitLab, Jenkins
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1w
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Senior Backend Engineer
Boston, Massachusetts, United States
$149k-$201k/yr HybridFull Time
CivilGrid
CivilGrid: SaaS mapping platform for underground utility and site intelligence.
6+ YOE6+ years with JavaScript/TypeScript and Node.js, 2+ years with React, strong Postgres knowledge, geospatial familiarity (PostGIS/GeoJSON), cloud-native and microservices experience, degree in CS/Civil or related.
JavaScript, TypeScript, Node.js, React, Postgres, PostGIS, GeoJSON
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Staff Software Engineer, Production Solutions
Boston or Costa Mesa
$220k-$292k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
12+ YOE12+ years software engineering experience building high-availability enterprise applications; strong full-stack skills (JavaScript/TypeScript, React, Next.js/Remix); systems thinking for manufacturing/MES domains; U.S. Person required; TS/SCI eligibility preferred.
Lattice OS, Forge MES, JavaScript, TypeScript, React, Next.js, Remix, AWS, AI/LLM
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3w
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Frontend Engineer (Civil Aviation)
Boston, Massachusetts, United States
OnsiteFull Time
Air Space Intelligence
Air Space Intelligence: Provides predictive AI software for aviation and defense operations.
Proficiency in JavaScript/TypeScript, React, Redux, CSS; experience building map-based web applications (Mapbox/Maplibre/Google Maps); familiarity with WebGL/WebGPU/ThreeJS and WebAssembly (WASM).
React, Redux, Mapbox, TypeScript, JavaScript, CSS, Maplibre, Google Maps, WebGL, WebGPU, ThreeJS, WebAssembly (WASM)
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2w
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Senior Fullstack Engineer, Portfolio Tools Engineering
Boston, Massachusetts, United States
$160k-$175k/yr HybridFull Time
Acadian Asset Management
Acadian Asset ManagementNYSE: AAMI: Systematic investment management using quantitative data and technology.
6+ YOE6+ years full-stack development experience with Python, Ray, React, and JavaScript; strong backend, API, and database skills; investment domain knowledge; CFA a plus.
Python, Ray, React, JavaScript
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