97 senior frontend developer jobs at 76 companies in Lockport, NY
3mo
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Senior Frontend Engineer
Toronto, Ontario, Canada
OnsiteFull Time
6+ YOE6+ years in frontend development; expert in JavaScript/TypeScript, React/Next.js, HTML5, CSS3; strong REST API design; Jest and React Testing Library experience; proficient with Figma; eligible to work in Canada.
JavaScript, TypeScript, React, Next.js, HTML5, CSS3, Jest, React Testing Library, REST API, Figma
3mo
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Senior Frontend Engineer
Toronto, Ontario, Canada
$140k-$175k/yr HybridFull Time
Frontend engineer with React, TypeScript, JavaScript; data-heavy, configurable UIs; dashboards and BI experience; strong UX and collaboration skills.
React, TypeScript, JavaScript, SASS, Jest, Cypress, AWS, Docker, Java, Django, Postgres, Python
19h
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Senior Angular Frontend Developer
Toronto or Mississauga or North York or Richmond Hill
$102k-$124k/yr HybridFull Time
Deep Angular and TypeScript expertise; scalable frontend architecture, Jest testing, REST APIs, accessibility, performance, CI/CD, debugging, code reviews, and cross-team technical leadership required.
Angular, TypeScript, Angular Material Design, Tailwind CSS, OAuth2, CI/CD, Jest, React, Vue, REST APIs, WCAG, Devin, Cursor, IntelliJ, Visual Studio, Windsurf
1mo
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Senior Frontend Engineer, Growth & Agents
Toronto, Ontario, Canada
$160k-$215k/yr HybridFull Time
5+ YOE5+ years frontend engineering experience; strong React and TypeScript skills; experience shipping customer-facing products; comfort with ambiguity and technical ownership.
React, TypeScript
7h
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Senior Frontend Developer (Customer Lifecycle)
Utrecht or Toronto
HybridFull Time
3+ YOERequires 3 years of senior product-led development or SaaS experience, user-friendly solution development, complex business rules and data models, feature ownership, and openness to AI development tools.
Angular, AG-Grid, PHP, Node
1d
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Frontend Delivery Engineer
Toronto, Ontario, Canada
$25-$32/hr RemoteFull Time, Contract
5+ YOERequires 5+ years of frontend development, 2+ years owning project outcomes, Next.js, Shopify, WordPress, headless CMS, QA, AI tools, ClickUp, and reliable EST overlap.
Next.js, Shopify, WordPress, Liquid, Claude, Codex, Kimi, ClickUp
6d
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Senior Software Engineer (Frontend) - Scribd Core
San Francisco or Ottawa or Phoenix or Toronto or Los Angeles or Denver or Salt Lake City or Atlanta or Chicago or Houston or Portland or New York City or Vancouver or San Diego or Washington, D.C. or Sacramento or Jacksonville or Seattle or Mexico City or Austin or Miami or Boston or Dallas
$124k-$226k/yr HybridFull Time
6+ YOERequires 6+ years of frontend software engineering experience, JavaScript/TypeScript and React expertise, modern web framework experience, architecture knowledge, performance optimization, testing, and strong collaboration skills.
JavaScript, TypeScript, React, Next.js, Microfrontend, monorepos
1w
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Senior Front-End Developer
Edmonton or Vancouver or Kitchener-Waterloo or Toronto
$121k-$164k/yr HybridFull Time
5+ YOEExpert front-end development with HTML, CSS, JavaScript/TypeScript, Next.js, React, accessibility, and performance; experience with APIs, headless CMS platforms, AI-assisted development, experimentation, and technical mentoring.
Next.js, Sanity, React, TypeScript, HTML, CSS, JavaScript, Claude, MCP, Optimizely, Kameleoon, Adobe Target, Amplitude, GA360, Figma
2mo
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Senior Frontend Engineer (Team Lead)
Toronto, Ontario, Canada
$154k-$205k/yr OnsiteFull Time
Lead frontend teams; build React/TypeScript apps; design systems; optimize performance; collaborate cross-functionally.
React, TypeScript, GraphQL, REST, Next.js, Monorepo tooling, Frontend performance tools
2mo
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Staff Frontend Engineer
Toronto or Canada
$175k-$200k/yr HybridFull Time
Deep expertise in TypeScript and React (Next.js), experience building production web apps, integrating LLMs/AI into UIs, product-minded development, and mentoring other engineers; multi-tenant experience preferred.
TypeScript, React, Next.js, Claude Code, Cursor, LLM
1mo
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Senior Software Engineer, Frontend (Web)
Toronto, Ontario, Canada
$104k-$156k/yr HybridFull Time
5+ YOE5+ years frontend/full-stack experience with Next.js, React, and TypeScript; strong CSS and accessibility practices; headless CMS integration; testing, Git and CI/CD; performance and SEO expertise; familiarity with AI-assisted development tools.
Next.js, React, TypeScript, GraphQL, REST, Figma, styled-components, Emotion, Framer Motion, GSAP, Three.js, WebGL, Contentful, AEM, Sanity, Claude Code, GitHub Copilot, Cursor, Git, CI/CD
2mo
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Senior/Mid Frontend Engineer - React
Toronto, Ontario, Canada
RemoteFull Time
Strong background in modern JavaScript, TypeScript, React; experience with state management; testing (Jest/Cypress/Playwright); web performance; mentorship; product-minded.
React, TypeScript, TanStack Query, Zustand, Jest, Cypress, Playwright
1w
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Senior Front-End Engineer (React)
New York or Dubai or Hong Kong or Lisbon or London or Toronto or Zurich
RemoteFull Time
Expert React and TypeScript skills, experience with Next.js/Vite/monorepos, state management (TanStack Query, Zustand), testing (Vitest, Playwright), Sentry, Git/Docker, and frontend performance/security practices.
Figma, Storybook, React, TypeScript, Next.js, Vite, pnpm, TanStack Query, Zustand, Chakra UI, Vitest, Playwright, Sentry, Git, Docker, GitHub CI/CD, Kubernetes, CDNs, wagmi, viem
3w
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Senior Front-End Engineer
Toronto, Ontario, Canada
$150k-$179k/yr OnsiteFull Time
Deep expertise in JavaScript/TypeScript, browser fundamentals, component-driven development (Lit preferred), modern bundlers, API integration, and front-end performance optimization.
Lit, TypeScript, JavaScript, Webpack, Vite, Rollup, REST, GraphQL, WebSockets, Git, PHP
3w
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Senior Frontend Software Engineer, AI UX
Toronto, Ontario, Canada
$140k-$200k/yr HybridFull Time
8+ YOE8+ years full-stack software engineering with strong frontend/UX focus, 1+ year building LLM/agentic products, React/TypeScript proficiency, prompt design and observability experience.
React, TypeScript, LLM
1mo
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Staff Frontend Engineer
Toronto, Ontario, Canada
$160k-$250k/yr HybridFull Time
8+ YOE8+ years front-end experience; proficiency in TypeScript, React, state management, accessibility, responsive design; experience with complex legacy code and cross-platform UIs.
React, TypeScript, CSS-in-JS, Tanstack Query, Redux, Zustand, React Native, Rust
1mo
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Senior Front End Developer
Toronto, Ontario, Canada
$100k-$142k/yr HybridFull Time
Bachelor's in CS or equivalent; proven experience with React, TypeScript, and React Native; GitHub/GitHub Actions; automated testing (unit/API/UI); designing secure, scalable applications; Agile experience and strong communication.
React, React Native, TypeScript, GitHub, GitHub Actions, Kotlin, Swift, Android
2mo
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Senior Lead Frontend UI Developer
Mississauga or Toronto
$121k-$171k/yr HybridFull Time
6+ YOE6+ years experience with Angular 15+, Node.js, Docker, Web Services and distributed architectures; real-time messaging (WebSocket), TDD, Git; experience modernizing applications and supporting sales/trading workflows.
Angular, Node.js, Docker, Web Services, WebSocket, Test-Driven Development (TDD), Git, Oracle RDBMS, MSSQL, Apache Pinot, .NET, WPF, Java Swing, React
3w
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Senior Front-End Engineer
Toronto, Ontario, Canada
$150k-$179k/yr OnsiteFull Time
Deep expertise in JavaScript/TypeScript and browser fundamentals, experience with component-driven architectures (Lit), bundlers, API integration (REST/GraphQL/WebSockets), and front-end performance optimization.
TypeScript, JavaScript, Lit, Webpack, Vite, Rollup, REST, GraphQL, WebSockets, Git
2d
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Senior Front End Engineer
Toronto, Ontario, Canada
HybridFull Time
Experienced front-end engineer with Angular, TypeScript, HTML5, CSS3, responsive design, testing, debugging, code review, and cross-functional collaboration skills; Ionic and Capacitor exposure is beneficial.
Angular, TypeScript, HTML5, CSS3, Ionic, Capacitor, Node.js, Express, NestJS, AWS, Docker
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