370 senior react developer jobs at 183 companies in Lockport, NY

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1w
Save
Mark Applied
Hide
Senior Full Stack React Developer
Toronto or King
$90k-$140k/yr HybridFull Time
Sun Life
Sun LifeNYSE: SLF: Provides insurance, wealth, and asset management solutions globally.
5+ YOE5+ years frontend development experience with JavaScript/ES6 and React; proficiency in HTML,CSS/SCSS,Webpack,Bootstrap, accessibility, responsive design, SPAs, debugging, and using AI tools like CoPilot.
JavaScript/ES6, React.js, HTML, CSS/SCSS, Webpack, XML/JSON, Bootstrap, CoPilot, Storybook.js, Parsley.js, AXIOS, react-bootstrap, React Context, Node.js, Adobe Experience Manager
1w
Save
Mark Applied
Hide
Senior Full Stack React Developer
Toronto or Waterloo
$90k-$140k/yr HybridFull Time
Sun Life
Sun LifeToronto Stock Exchange: SLF: Provides insurance, retirement, and asset management services globally.
5+ YOE5+ years frontend development experience with JavaScript/ES6 and React.js; proficiency in HTML,CSS/SCSS,Webpack,XML/JSON,Bootstrap; accessibility, responsive design, SPA development, and use of AI tools like CoPilot.
JavaScript/ES6, React.js, HTML, CSS/SCSS, Webpack, XML, JSON, Bootstrap, Storybook.js, Parsley.js, AXIOS, react-bootstrap, React Context, Node.js, Adobe Experience Manager, CoPilot
1mo
Save
Mark Applied
Hide
Senior Mobile Developer (React Native)
Calgary or Toronto or Canada
HybridFull Time
OneVest
OneVest: Provides modular software for digital wealth management and onboarding.
5+ YOE5+ years React Native with TypeScript/JavaScript; experience building enterprise mobile apps; familiarity with FastLane, Expo, App/Play stores, TestFlight; strong GraphQL front-end with microservices.
React Native, TypeScript, JavaScript, FastLane, Expo, App Stores, Play Stores, TestFlight, GraphQL, Node, Serverless, MongoDB, AWS
1w
Save
Mark Applied
Hide
Senior ReactJs Developer
Toronto, Ontario, Canada
OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
5+ YOE5+ years experience building React JS applications; strong skills in Java/JavaScript, TypeScript, REST, Spring Boot, HTML, CSS, Git, Agile; API and front-end development experience.
Agile, CSS, Git, HTML, Java, Javascript, REST, Spring Boot, TypeScript, API(Application programming interface), Front end Technologies, React JS
1mo
Save
Mark Applied
Hide
Senior AI Full-Stack Software Developer (Python/React)
Toronto or Montreal
$119k-$145k/yr HybridFull Time
Intact Financial
Intact FinancialToronto Stock Exchange: IFC: Provides property and casualty insurance to individuals and businesses.
5+ YOESenior AI full-stack developer with 5+ years experience, TS/React, Python, AWS, REST/Swagger, AI concepts (GenAI, MLOps); bilingual in Quebec; eligible to work in Canada.
TypeScript, React, Python, AWS, REST, Swagger, MLOps
1mo
Save
Mark Applied
Hide
Senior UI Developer (.NET/React)
Toronto, Ontario, Canada
$94k-$142k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
Proficiency in .NET/C#, React, HTML5, CSS3, and JavaScript; experience in Windows and web UI development; knowledge of JSON/XML, REST APIs; TypeScript preferred; bachelor’s degree or equivalent experience.
.NET/C#, React, HTML5, CSS3, JavaScript, Windows, JSON, XML, REST API, TypeScript
1mo
Save
Mark Applied
Hide
Senior UI Developer (.NET/React)
Toronto, Ontario, Canada
$94k-$142k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
Proficiency in .NET/C#, React, HTML5, CSS3, and JavaScript; experience in Windows and Web UI development; knowledge of JSON/XML and REST integrations; familiarity with test frameworks; Bachelor's degree or equivalent experience.
.NET, C#, React, HTML5, CSS3, JavaScript, JSON, XML, REST API, TypeScript
1mo
Save
Mark Applied
Hide
Senior Full-Stack Developer (Ruby on Rails/React)
Toronto, Ontario, Canada
OnsiteFull Time
Phoenix
Phoenix: Provides online medical consultations and discreet prescription medication delivery.
8+ YOE8+ years programming; 5+ years Ruby on Rails; expertise in at least one modern JS frontend (ideally React); robust feature development and testing; cloud experience (AWS preferred).
Ruby on Rails, React, AWS
1mo
Save
Mark Applied
Hide
Senior/Mid Frontend Engineer - React
Toronto, Ontario, Canada
RemoteFull Time
Sensor Tower
Sensor Tower: Provides digital market intelligence and mobile app analytics software.
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
2w
Save
Mark Applied
Hide
Software Engineer (React + Angular)
Brazil or Toronto
HybridFull Time
Exadel
Exadel: Provides enterprise software engineering and AI-driven digital transformation services.
Senior frontend development experience with React and Angular, strong HTML5/CSS3/JavaScript/TypeScript skills, state management and build tool experience, unit testing, and English proficiency.
React 19, Angular 21+, HTML5, CSS3, JavaScript (ES6+), TypeScript, Redux, NgRx, Context API, Webpack, Vite, Jasmine, Jest, Angular Material, OpenFin, CI/CD pipelines, Bootstrap, Tailwind CSS, Mithril.js
3w
Save
Mark Applied
Hide
Senior Software Engineer (Golang, React)
Toronto or United States
$125k-$150k/yr RemoteFull Time
Applied Systems
Applied Systems: Provider of cloud-based management software for the insurance industry.
5+ YOE5+ years building web applications; 3+ years with React; experience with Golang, C#, TypeScript/JavaScript, Node JS, Kubernetes, PostgreSQL/SQL Server, GCP, gRPC and RESTful services; CI/CD, testing, code review, and mentoring skills.
React, Golang, C#, TypeScript, JavaScript, Node JS, Kubernetes, PostgreSQL, SQL Server, Microsoft Visual Studio Code, GRPC, RESTful services, Jira, Confluence, Cypress, RestSharp, GIT, Claude Code, GCP, CI/CD
3w
Save
Mark Applied
Hide
Senior FullStack Developer (Node+React) - Temporary
Toronto or Brazil or South America
RemoteContract
EX Squared
EX Squared: Digital transformation agency providing custom software and IT staffing.
5+ YOE5+ years with React and Node.js, AWS and Docker familiarity, experience with APIs, GraphQL/Apollo, testing with Jest/Cypress, English advanced.
React, Node.js, Next.js, Nuxt.js, GraphQL, Apollo, Jest, Cypress, AWS, Docker, ECS Fargate, Aurora, OpenSearch, S3, EventBridge, SQS, Cognito, Bedrock, CreatorIQ, Frame.io, Microsoft 365 Graph, OAuth2, OIDC, RBAC, ABAC
3mo
Save
Mark Applied
Hide
Senior Software Engineer
Toronto, Ontario, Canada
$120k-$130k/yr RemoteFull Time
Makeship
Makeship: Crowdfunding platform for creators to launch limited-edition products.
5+ YOE5+ years software development; 2+ years in a senior/lead role; full-stack experience with React/NextJS frontend and Go backend; strong leadership, mentoring, and architectural skills; ability to design scalable, reliable systems; excellent communication.
React, NextJS, Go, Datadog, Tailwind, Figma
1mo
Save
Mark Applied
Hide
Senior Software Developer
Toronto, /, Canada
$100k-$142k/yr HybridFull Time
Moneris
Moneris: Processes merchant payments and provides point-of-sale commerce solutions.
Develop mobile apps for iOS/Android using React Native and native Swift/Kotlin; ensure automated tests, CI/CD, and Agile practices.
React Native, Swift, Kotlin, GitHub, GitHub Actions
1w
Save
Mark Applied
Hide
Senior Software Engineer, Frontend (React-Native)
Toronto or Vancouver
$116k-$145k/yr RemoteFull Time
Marqeta
MarqetaNASDAQ: MQ: A platform for modern card issuing and payment processing.
5+ YOE5+ years building web and mobile apps with strong React Native expertise; experience with React.js, state management (Redux/Context), TypeScript/JavaScript, native iOS/Android modules, REST/GraphQL, CI/CD, and mentoring engineers.
React Native, React Navigation, Expo, Swift, Kotlin, Objective-C, Java, React.js, Redux, Context API, JavaScript, TypeScript, HTML, CSS, RESTful APIs, GraphQL, Fastlane, Bitrise, App Center, Git, WebAssembly, PWAs
1w
Save
Mark Applied
Hide
Software Engineer (React + Angular)
Brazil or Toronto
HybridFull Time
Exadel: Provides digital engineering and AI-focused software consulting services.
Senior frontend experience with React 19 and Angular 21+, strong HTML5/CSS3/JavaScript (ES6+)/TypeScript skills, state management (Redux/NgRx/Context), build tools (Webpack/Vite), unit testing (Jasmine/Jest), and Angular Material.
React 19, Angular 21+, HTML5, CSS3, JavaScript (ES6+), TypeScript, Redux, NgRx, Context API, Webpack, Vite, Jasmine, Jest, Angular Material, OpenFin, Bootstrap, Tailwind CSS, Mithril.js
2mo
Save
Mark Applied
Hide
Senior Frontend Engineer
Toronto or Mississauga
$132k-$165k/yr HybridFull Time
Guidewire
GuidewireNYSE: GWRE: Provides a software platform for property and casualty insurers.
8+ YOE8+ years in frontend development with React/TypeScript; strong testing (Vitest Testing Library); AWS experience; micro frontends a plus; strong collaboration and communication.
React, TypeScript, Vitest, Testing Library, AWS, EKS, CloudFront, S3, Python, FastAPI, REST APIs, WebSockets
2mo
Save
Mark Applied
Hide
Senior Fullstack Developer, Consumer
Toronto, Ontario, Canada
$120k-$150k/yr HybridFull Time
HelloFresh
HelloFreshFrankfurt Stock Exchange: HFG: Global meal kit delivery service and food solutions provider.
4+ YOE4+ years in agile software development; strong React JS experience; backend experience with Node.js/Nest/Nx; GraphQL, SQL, testing, and CI/CD; knowledge of storefronts (Shopify) and AI coding tools.
React, Next.js, Nest.js, Shopify, GraphQL, SQL, Node.js, Python, GoLang, Nuxt.js, Remix, Datadog, Sentry, Honeycomb, New Relic, AB testing, Multivariate testing
2mo
Save
Mark Applied
Hide
Senior Front End Engineer
Toronto, Ontario, Canada
HybridFull Time
Wisedocs
Wisedocs: AI platform for automated medical record review and claims analysis.
Senior Front End Engineer with React experience, UI/UX focus, leading a small team, and collaboration with cross-functional engineering teams.
React, HTML, CSS, JavaScript, UX/UI
2mo
Save
Mark Applied
Hide
Senior Software Engineer (Auth0)
Toronto, Ontario, Canada
$136k-$187k/yr HybridFull Time
Okta
OktaNASDAQ: OKTA: Provide secure identity management and authentication for enterprises.
5+ YOE5+ years software development; strong JS/TypeScript; Node.js; React; RESTful APIs; end-to-end ownership; collaborative; remote-friendly; AI familiarity helpful.
Node.js, REST APIs, JavaScript, TypeScript, React, Styled Components

Explore Jobs

Expand Your Job Search