370 senior react developer jobs at 183 companies in Lockport, NY
🚀PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yrOn-SiteFull Time
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).
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.
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.
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.
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
Senior AI Full-Stack Software Developer (Python/React)
Toronto or Montreal
$119k-$145k/yrHybridFull Time
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.
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.
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.
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).
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
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.
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
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.
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.
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.
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.
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