Top Front End Developer Jobs in Hartford, CT

Develop and maintain a fraud-analysis web application and platform, with 60–70% frontend focus. Build APIs, collaborate with product and cross-functional teams, write automated tests, analyze product metrics, troubleshoot issues, maintain service-level requirements, and participate in on-call support. The role uses React, backend languages, databases, Docker, and AWS technologies in a remote U.S.-based environment.

Lead frontend technical strategy for Affirm’s checkout decision orchestration systems. Design and architect scalable web applications, guide major technical initiatives, improve reliability and operational processes, establish engineering quality standards, collaborate with product, design, and analytics, and mentor engineers. The role focuses on building fast, clear, and reliable checkout experiences using modern declarative UI frameworks.

Build and maintain reusable React components, forms, and shared libraries for VA.gov. Extend the VA Design System, fix bugs, write automated tests and Storybook documentation, and ensure accessible implementation meeting Section 508 and WCAG 2.2 AA standards. Collaborate with designers and engineers to translate Figma designs into code, participate in code reviews and Agile ceremonies, and use AI-assisted development tools to improve delivery quality.

Develop and enhance website functionality using React, optimize system performance, design technical solutions, and independently break technical specifications into subtasks. The role also involves applying SOLID principles, understanding FRP and HTTP(S)/WS(S) protocols, implementing native UX/UI components, conducting code reviews, and working with TypeScript and RxJS.

Build and deliver customer-facing web features using React and TypeScript while contributing to Node.js services, REST or GraphQL APIs, and backend-for-frontend layers. Translate customer requirements into clean, modular, well-tested code, collaborate with Product, Design, and Operations, work in an Agile environment, and mentor other engineers. Support web quality, performance, and user experience across Credible’s financial marketplace platform.

Develop scalable, engaging web applications for millions of users using React, TypeScript, and related technologies. Collaborate with product, UX, and engineering teams to design features, improve code quality, implement automated testing, optimize performance and accessibility, and support reliable distributed systems. Participate in pair programming, incident management, on-call responsibilities, and technical mentorship while evaluating new technologies and resolving blockers.

Leads frontend engineering strategy and architecture while building accessible, performant web applications. Responsibilities include developing React or Angular applications, design systems, testing and CI/CD practices, accessibility compliance, performance optimization, cloud deployment, and frontend infrastructure. The role mentors engineers, influences cross-functional technical decisions, partners with product and design teams, and delivers customer-facing solutions. It is remote with 0–10% travel and requires U.S. citizenship plus eligibility for Public Trust 6C.

Develop, integrate, debug, and maintain embedded software on Linux platforms using C, C++, and Python. Support processor and board bring-up, device control, networking, hardware interfaces, automated testing, documentation, laboratory and field testing, and customer demonstrations. Collaborate with software, hardware, RF, FPGA, DSP, systems, and test engineers across xG and mixed-signal product development.

Build React and TypeScript interfaces for reviewing, querying, and monitoring automated outputs. Develop information-dense screens, file intake and editing tools, structured-data views, charts, and reviewer workflows. Establish reusable component libraries and frontend conventions for internal and external applications. The role also involves contributing to frontend architecture and potentially writing server-side API routes.

Build and maintain customer-facing web applications and digital journeys for Jabra Enhance. Develop accessible, high-performing features using React.js, JavaScript, CSS, Relay, and GraphQL; collaborate with design and engineering teams; create reusable components; optimize performance and reliability; participate in architecture reviews, refactoring, and Agile ceremonies.

Build and maintain fast, intuitive frontend applications for blockchain and Web3 products. Collaborate with product, design, and engineering teams; develop reusable components and frontend architecture; integrate wallets and smart-contract interactions; improve performance, reliability, and accessibility; participate in technical planning and code reviews; mentor other developers and establish frontend best practices.

Lead frontend-focused full-stack development for a neurotechnology platform controlling brain stimulators, managing patient data, visualizing real-time 3D data, integrating APIs, syncing cloud systems, and improving user experience. The role involves React and React Native frontend work, Python or Node.js backend development, team growth and mentorship, and collaboration on secure, scalable healthcare applications.

Build and maintain reader-facing membership features, including calls to action, donation flows, authentication, and account experiences. Integrate messaging, payment, CRM, CDP, analytics, and donation systems. Instrument audience and donor journeys, support A/B testing, develop front-end services and integrations, and protect reader privacy. Collaborate with product, engineering, audience, data, design, and business teams while contributing to product roadmaps, documentation, troubleshooting, and technical communication.

Build and lead the frontend architecture for Tailscale’s next-generation web console. Responsibilities include developing shared frontend infrastructure, identity and authentication systems, cross-origin session management, testing strategies, developer tooling, deployment workflows, and unified product experiences. The role partners across design, growth, product, infrastructure, and engineering while providing technical leadership, mentoring, and on-call incident support.

Senior or Staff Frontend Engineer responsible for developing scalable, high-performance web applications, shaping frontend architecture, mentoring engineers, and leading cross-functional feature delivery. The role requires modern JavaScript and TypeScript expertise, strong UI system design, API integration, debugging, and technical documentation skills. The engineer will also promote AI-assisted and agentic development practices, collaborate with product and backend teams, and build intuitive healthcare payment interfaces.

Senior UI Engineer responsible for building accessible, high-performance React applications and scalable front-end architecture for a pharmacy management platform. The role includes developing design-system components, defining API contracts, leading testing and code reviews, improving performance and accessibility, mentoring engineers, partnering with product and design, and using AI development tools responsibly. Candidates need strong React, TypeScript, CSS, REST API, Node.js, and PostgreSQL experience, plus end-to-end project ownership and cross-functional leadership.

Build and maintain customer-facing and internal web applications using React and TypeScript across Rails-embedded and standalone environments. Own shared component libraries, implement Figma designs, improve frontend performance, integrate REST APIs, expand automated testing, and investigate production issues. Collaborate closely with design, product, and backend engineering while documenting maintainable patterns and applying coding agents effectively.

Lead the strategic direction of frontend engineering, architecture, tooling, and standards. Build accessible, high-performing React or Angular applications, component libraries, design systems, deployment pipelines, and testing strategies. Drive modernization, performance, accessibility, and developer-experience initiatives while collaborating with product and design teams. Mentor engineers, influence cross-team technical decisions, and contribute across the full stack when needed. The role is remote, requires U.S. citizenship and the ability to obtain Public Trust 6C, and involves up to 10% travel.

Own end-to-end development of customer-facing web platform features, emphasizing React and TypeScript frontend development while contributing to Python backend services. Translate product concepts and designs into reusable, intuitive UI components, partner with Product and Design, engage directly with users, and use AI-powered tools to accelerate development while maintaining code quality and performance.

Build responsive, high-performance React and Next.js interfaces for cloud workspace creation, resource management, billing, monitoring, and developer tools. Integrate applications with backend APIs and real-time services, improve performance and accessibility, and develop reusable components. Collaborate with backend engineers and product teams while contributing to feature ownership and product decisions.

Build and maintain responsive, accessible web interfaces using React, HTML, CSS, and JavaScript/TypeScript. Integrate applications with REST APIs and back-end services, implement WebSocket features, optimize Core Web Vitals, and develop reusable design-system components. The role also involves Node.js tooling, cross-browser compatibility, code reviews, QA collaboration, and front-end testing.

Build and ship healthcare software across the frontend, API, and database using React, TypeScript, Next.js, tRPC, Prisma, and related technologies. Own features end to end, prototype with AI tools, test with patients and care teams, and improve performance, accessibility, reliability, and scalability. Collaborate closely with company leadership in a fast-paced startup environment while developing trustworthy automation for healthcare delivery.

Develop and maintain responsive frontend interfaces, dashboards, reports, and enterprise web applications. Translate requirements into functional user interfaces, build UI and automated tests, troubleshoot and optimize performance, implement REST API integrations and routing, and collaborate with backend developers and testers. The role requires React, JavaScript, Redux, Node.js, and related frontend technologies, with preferred experience in dashboards, reporting, testing, AWS, and government applications.

Build and maintain responsive, accessible front-end interfaces using React, React Native, HTML, CSS, and Shopify. Apply UX/UI principles, collaborate with designers and multidisciplinary teams, provide clear technical feedback, and independently deliver high-quality work on complex technology or AI-related projects. Contractors complete output-based tasks and must meet weekly minimum submission requirements, with an expected start within 24–48 hours of onboarding.

Design and build user-facing features for a live video chat and multiplayer gaming platform. Collaborate with designers and product managers, lead technical quality and scalability efforts, rapidly experiment, and solve customer problems through deep user understanding. The role focuses on front-end architecture using TypeScript and React, with Node.js proficiency and strong CSS fundamentals.