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Senior Front End Engineer
Cambridge, Massachusetts, United States
$150k-$185k/yr OnsiteFull Time
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
1w
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Senior Frontend Engineer - Ostro
Boston, Massachusetts, United States
$110k-$270k/yr RemoteFull Time
5+ YOE5+ years building production SaaS frontend applications with deep React and modern frontend expertise; strong communication and cross-functional collaboration.
React, Javascript, Typescript, Tailwind, Material-UI, MobX, React Query, Zustand
4d
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Senior Frontend Engineer (Tech Lead)
Manchester, New Hampshire, United States
$188k-$250k/yr OnsiteFull Time
Expertise in React and TypeScript, frontend architecture, GraphQL/REST integration, performance and accessibility, proven technical leadership and large-scale frontend ownership.
React, TypeScript, GraphQL, REST, Next.js
1mo
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Senior Software Engineer (Frontend)
New York City or Boston
$185k-$215k/yr HybridFull Time
5+ YOE5+ years building production frontend software; deep fluency in TypeScript/JavaScript/CSS; strong command of React and Next.js; experience with design systems, state management, testing, and web performance; familiarity with AI/ML and LLM applications.
TypeScript, JavaScript, CSS, React, Next.js, Node.js, React Native
2mo
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Senior Front End Engineer (Angular, JavaScript)
Boston, Massachusetts, United States
$97k-$185k/yr OnsiteFull Time
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
2w
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Staff Front End Engineer
Boston or Las Vegas or Pittsburgh or United States
$172k-$229k/yr HybridFull Time
Experienced frontend engineer with strong proficiency in React, TypeScript, and Vue; expertise in frontend architecture, UX, cross-team collaboration, and mentoring.
React, TypeScript, Vue, Node, Python
1mo
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Senior Front End Software Engineer
Atlanta or Boston or Scottsdale or Seattle or Washington
$141k-$226k/yr OnsiteFull Time
6+ YOEBachelor's degree, 6+ years software development experience, expertise in JavaScript/TypeScript, HTML5, CSS3, Angular or React, Webpack, testing (Jest/Karma), large-scale web apps, AI-assisted development practices.
JavaScript, TypeScript, HTML5, CSS3, Angular, React, Webpack, Jest, Karma
2mo
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Principal Frontend Engineer (Modeling & Simulation)
San Francisco or Boston or United States
HybridFull Time
8+ YOE8+ years building front-end systems with deep React and TypeScript expertise, experience with Cesium and MUI, strong architectural judgment, and eligibility for U.S. Top Secret clearance.
TypeScript, React, Cesium, MUI
1mo
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Senior Front End Software Engineer
Boston, Massachusetts, United States
$130k-$170k/yr RemoteFull Time
6+ YOE6+ years front-end experience with Angular, TypeScript, and RxJS/observables; experience building complex, data-driven web apps, working with asynchronous/streaming data; familiarity with Firebase, WebGL, Material Design, and Google Cloud preferred.
Angular, TypeScript, RxJS, WebGL, Firebase, Google Cloud, Material Design
2mo
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Senior Front End Software Developer (AI, React, JavaScript) - Remote US
Waltham or United States
$130k-$158k/yr RemoteFull Time
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
1mo
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Angular Front End Developer in Merrimack, NH (New York, NY, US)
Merrimack or New York
$100k-$130k/yr OnsiteFull Time
10+ YOE10+ years software development experience; strong expertise with Angular (18+), React, TypeScript, RxJS, Redux/NgRx, NodeJS/NestJS, GraphQL; experience with micro frontends, CI/CD, and test automation (Cypress, Playwright, Jest, Storybook).
Angular, React, RxJS, Redux, NgRx, TypeScript, Cypress, Playwright, Jest, Storybook, NodeJS, NestJS, GraphQL, CI/CD
4w
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Sr. Front End Developer - Angular, Node.js
Merrimack, New Hampshire, United States
$78k-$172k/yr OnsiteFull Time
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
2mo
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Senior ASIC Front End Infrastructure Engineer
Santa Clara or Westford or Austin or Durham
$184k-$357k/yr OnsiteFull Time
8+ YOE8+ years experience; Masters in Electrical Engineering, Computer Engineering, Computer Science or related; Python/Perl; AI tooling; Make; CI (Jenkins); strong problem solving; ASIC/CPU verification knowledge.
Python, Perl, Make, Jenkins
4d
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Senior Software Engineer, Frontend
United States or Atlanta or Boston
$170k-$190k/yr RemoteFull Time
Mastery of frontend web technologies (React, TypeScript), experience with mapping libraries, fullstack Node.js context, API design (REST/GraphQL/gRPC), PostgreSQL familiarity, and frontend performance optimization.
React, TypeScript, Node.js, Mapbox, Google Maps API, REST, GraphQL, gRPC, PostgreSQL, AWS
1w
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Front-End Software Engineer (React/Typescript)
Boston or New York City
HybridFull Time
8+ YOE8+ years front-end experience with React and Typescript, experience building data-rich apps, GraphQL familiarity, strong product/UX focus, and debugging/performance skills.
React, Typescript, GraphQL
3w
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Frontend C2 Systems Full Stack Developer
Hanscom Air Force Base, Massachusetts, United States
$113k-$257k/yr HybridFull Time
8+ YOE8+ years software development experience, lead/frontend expertise with React and TypeScript, REST/GraphQL integration, automated testing, CI/CD, containerized deployment, ability to obtain Secret clearance.
React, TypeScript, D3, Mapbox, Cesium, Jest, Cypress, GraphQL, REST, CI/CD
3w
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Frontend C2 Systems Full Stack Developer
Hanscom AFB or Hampton
$113k-$257k/yr OnsiteFull Time
8+ YOE8+ years software development experience with frontend expertise; React and TypeScript; accessibility (Section 508/WCAG); REST or GraphQL integration; automated testing, CI/CD, containerized deployment; ability to obtain Secret clearance.
React, TypeScript, Jest, Cypress, D3, Mapbox, Cesium, GraphQL, REST, SAST, DAST
2mo
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Senior UI Software Engineer
Mansfield, Massachusetts, United States
$132k-$190k/yr HybridFull Time
7+ YOE7+ years front-end UI development; expert in Angular, TypeScript, Blazor, C#, HTML/CSS; building enterprise web apps; AI/LLM integration knowledge.
Angular, Blazor, TypeScript, C#, HTML/CSS, RESTful APIs, .NET, Python, AI services
2mo
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Senior Engineer (Product)
Boston or Remote or Vancouver
$135k-$165k/yr HybridFull Time
7+ YOE7–10 years of progressive software engineering with leadership; strong frontend and backend capabilities; Agile experience; mentorship.
2mo
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Senior Fullstack Engineer - ecommerce platform
Boston, Massachusetts, United States
$165k-$180k/yr HybridFull Time
6+ YOESenior fullstack engineer with 6+ years experience; BS in CS/Engineering or equivalent; strong frontend/backend skills; ownership mindset and ability to drive complex projects.
Next.js, React, Typescript, Node.js, Nest.js, Typeorm, PostgreSQL, Aurora, Kafka, Kubernetes, Docker, Elasticsearch
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