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206 javascript typescript jobs at 112 companies in Boston, MA

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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3mo
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Javascript - Senior Developers - AI Training - Boston, USA
Boston or United States
$50/hr RemoteContract
Prolific
Prolific: Platform connecting researchers and AI developers with verified participants.
BS/MS/PhD in CS or related; professional experience building scalable web apps with JavaScript/TypeScript; strong algorithmic problem-solving (LeetCode Medium–Hard); deep JS internals knowledge and clean ES6+ code practices.
JavaScript (ES6+), TypeScript, React, Node.js, Vue, Angular, Jest, Cypress, Webpack, Vite, GraphQL, RESTful APIs, LeetCode
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16h
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Senior UI Developer (React & TypeScript)
Woonsocket, Rhode Island, United States
$68k-$114k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
Bachelor's degree in CS/IT/Engineering or related, strong experience with React 18+, TypeScript, JavaScript (ES6+), state management, telemetry, testing, and frontend performance.
React 18+, TypeScript, JavaScript (ES6+), Redux Toolkit, Context API, Zustand, Application Insights, OpenTelemetry, Jest, React Testing Library
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2mo
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Senior Front End Engineer (Angular, JavaScript)
Boston, Massachusetts, United States
$97k-$185k/yr OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
5+ YOESenior Front End Engineer with Angular, JavaScript, TypeScript, RxJS, HTML/CSS; experience with NgRx/Redux; REST APIs; CI/CD; AWS/Docker; 5 years in software engineering; bachelor’s degree preferred.
Angular, JavaScript, TypeScript, RxJS, HTML, CSS/SCSS, NgRx, Redux, Playwright, Cypress, REST APIs, AWS, Docker, CI/CD
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1d
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Senior UI Developer (React & TypeScript)
Woonsocket, Rhode Island, United States
$68k-$114k/yr HybridFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
Bachelor's in CS/IT/Engineering, strong React 18+, TypeScript, JavaScript (ES6+), state management (Redux Toolkit/Context/Zustand), app telemetry, testing (Jest/React Testing Library), and frontend performance expertise.
React 18+, TypeScript, JavaScript (ES6+), Redux Toolkit, Context API, Zustand, Application Insights, OpenTelemetry, Jest, React Testing Library
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3mo
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Software Engineer (Backend Typescript)
Jersey City or Smithfield or Merrimack
$80-$102/hr OnsiteContract
Fidelity Investments
Fidelity Investments: Financial services and investment management firm providing advisory solutions.
5+ YOEBachelor's in CS or related,5+ years software development with NodeJS/TypeScript,experience with microservices,API design,AWS,Docker/Kubernetes,Kafka and NoSQL;strong communication and technical leadership.
NodeJS, JavaScript, Typescript, Express, Mongoose, Casbin, Axios, NPM, Kafka, AWS, S3, EC2, Docker, Kubernetes, MongoDB, Bitbucket/Stash, Jenkins, Artifactory
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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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2mo
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Software Development Engineer in Test
Boston, Massachusetts, United States
$95k-$105k/yr HybridFull Time
SS&C Technologies
SS&C TechnologiesNasdaq: SSNC: Provides software and technology for financial and healthcare sectors.
SDET with programming experience in JavaScript/TypeScript, Python, C#, or Go; understanding of core testing concepts; strong communication.
JavaScript, TypeScript, Python, C#, Go, Cypress, Playwright, Jest, Postman, Docker, AWS, GitHub Actions, Jenkins, Grafana, SQL, Slack, PagerDuty, AWS Lambda
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2mo
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Manager I, Engineering - Data Visualization Explorations
Boston or New York
$187k-$240k/yr HybridFull Time
Datadog
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
2+ Mgmt2+ years people management in software, strong TypeScript/JavaScript, React, excellent communication, customer-focused, ownership mindset
TypeScript, JavaScript, React
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6d
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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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1mo
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Staff Software Development Engineer - Frontend
Woonsocket or Scottsdale or Hartford or Richardson or Alpharetta
$118k-$261k/yr HybridFull Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
7+ YOE7+ years frontend development with React/JavaScript/TypeScript; 3+ years testing frameworks; 3+ years CI/CD; frontend security and accessibility knowledge.
React, JavaScript, TypeScript, Jest, Cypress, Playwright, CI/CD, JxBrowser
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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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2mo
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Senior Front End Engineer
Cambridge, Massachusetts, United States
$150k-$185k/yr OnsiteFull Time
Blitzy
Blitzy: Autonomous AI platform for enterprise software development.
10+ YOE10+ years frontend experience; expert in JavaScript/TypeScript; deep React knowledge; strong state management; build tooling; leadership and mentorship; frontend performance and accessibility.
JavaScript, TypeScript, React, Redux, MobX, Zustand, Webpack, Vite, esbuild, Jest, React Testing Library, Playwright, Cypress, GraphQL, WebSockets, Framer Motion, Accessibility (WCAG), CI/CD, Testing
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3w
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Software Engineer, DevSecOps
Cambridge, Massachusetts, United States
$109k-$175k/yr HybridFull Time
Moderna
ModernaNasdaq: MRNA: Develops and manufactures messenger RNA medicines and vaccines.
5+ YOE5+ years in software/platform/DevOps; strong TypeScript/JavaScript or Python; AWS experience; CI/CD pipeline creation; developer tooling and platform engineering experience.
Python, TypeScript, JavaScript, GitHub Actions, Pulumi, Docker, AWS, JFrog, JFrog Artifactory, Nexus, GitHub Packages
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1mo
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Software Engineering Lead
North Andover, Massachusetts, United States
$115k-$192k/yr OnsiteFull Time
RELX
RELXLondon Stock Exchange: REL: Provides information-based analytics and decision tools for professional customers.
Experience leading engineers; proficient in Python, Java, C#, .NET, JavaScript or TypeScript; strong AWS, Docker, Kubernetes; CI/CD; DevOps; Agile; excellent communication.
AWS, Docker, Kubernetes, CI/CD, DevOps, Python, Java, C#, .NET, JavaScript, TypeScript
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1mo
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Software Engineering Lead
North Andover, Massachusetts, United States
OnsiteFull Time
Elsevier
ElsevierLondon Stock Exchange: REL: Provides scientific, technical, and medical research information and analytics.
Extensive software engineering experience with leadership; proficiency in Python, Java, C#, JavaScript/TypeScript; AWS; Docker & Kubernetes; CI/CD; DevOps; Agile; strong communication.
AWS, Docker, Kubernetes, CI/CD, Python, Java, C#, JavaScript, TypeScript, .NET, APIs, DevOps, Infrastructure Automation
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3w
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Sr. Front End Developer - Angular, Node.js
Merrimack, New Hampshire, United States
$78k-$172k/yr OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
10+ YOE10+ years front-end experience with Angular, JavaScript/TypeScript, Node.js, RxJS, HTML/CSS; test automation and TDD; CI/CD and AWS; microservices and SPA architecture.
Angular, Node.js, JavaScript, TypeScript, RxJS, NPM, Figma, Selenium, Cucumber, Cypress, Playwright, Jest, Jasmine, AWS, Jenkins, Artifactory, uDeploy, GitHub, Docker, Kubernetes
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3mo
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Sr React Software Engineer
Woonsocket, Rhode Island, United States
$100k-$110k/yr HybridFull Time
Branding Brand
Branding Brand: Develops mobile commerce platforms and applications for enterprise retailers.
Strong React.js, React Native, JavaScript, TypeScript, Node.js; API/server experience; CS fundamentals; mobile e-commerce focus; Git, bash, GraphQL/REST a plus.
React.js, React Native, JavaScript, TypeScript, Node.js, Git, bash, GraphQL, REST, Jira, AWS
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2d
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Forward Deployed Engineer
United States or Nashua or Austin
OnsiteFull Time
Optimizely
Optimizely: Provides a SaaS platform for digital marketing and experimentation.
3+ YOE3+ years customer-facing technical experience, programming in JavaScript/TypeScript/Python, API integration, RAG and embedding workflows, prompt engineering, troubleshooting, and strong communication skills.
JavaScript, TypeScript, Python, Optimizely AI (Opal), CMS, CMP, Web Experimentation, Feature Experimentation, ODP
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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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