Top Front End Developer Jobs in Boston, MA

Lead full-stack developer responsible for architecting and delivering end-to-end frontend solutions using React/TypeScript. Oversee a team, build accessible responsive UIs (Section 508/WCAG), integrate REST/GraphQL APIs, implement automated tests and CI/CD, deploy containerized apps, translate user requirements into performant interfaces, and support mission-driven DoD/C2 systems requiring Secret clearance eligibility and Security+ certification.

Own and develop the Shopify Plus storefront, B2B wholesale catalog, and Shopify POS. Translate UX into Liquid/HTML/CSS/JS, configure apps and integrations, optimize performance, manage releases in agile sprints, and coordinate with external development partners to ensure consistent, high-quality commerce experiences.

Build and maintain Angular-based, data-dense UIs for an AI-native financial services platform. Own features end-to-end from Figma to Angular components and Python API endpoints, implement streaming and AI-driven interfaces, maintain the component library and Storybook, ensure performance, accessibility (WCAG 2.1 AA), security-aware RBAC rendering, and comprehensive testing and CI coverage.

Build and own major surfaces of a Next.js consumer healthcare web app. Implement UI with high polish, performance, and accessibility; make frontend architecture decisions; work with design, backend (Rails/Postgres), and clinical stakeholders; write SQL, debug end-to-end, and own QA to deliver features.

Lead the frontend of a large healthcare application using TypeScript and React. Guide architecture, conduct code reviews, enforce test-first practices, and embed WCAG/Section 508 accessibility. Integrate AI coding assistants, collaborate on RESTful API integration with backend teams, mentor engineers, and participate in Agile planning and release readiness for a customer-facing product serving millions.

Own and evolve Roo's frontend platform and design system, building tooling, developer workflows, AI-assisted integrations, and migration paths to modern libraries (web and mobile). Partner with Product and Design, improve developer experience, and remove friction so teams can ship high-quality, consistent features rapidly.

The Frontend Engineer role involves developing scalable web applications using Angular, ensuring high-quality user experiences, optimizing performance, and collaborating with backend teams. Responsibilities include code reviews, testing, and supporting deployment processes.

Lead frontend technical direction for the Trellis design system: design and build a production component library, define accessibility and theming models, create tooling and migration pipelines (codemods, refactoring automation), leverage AI coding agents, mentor senior engineers, and partner with PM/UX to drive frontend architecture and adoption across product teams.

Develop and maintain user interfaces and digital marketing tools, build reusable scalable front-end code, collaborate with back-end and cross-functional teams, troubleshoot and optimize site interaction and UX, lead projects, and stay current with web best practices and new technologies.

Lead frontend architecture and technical strategy for a collaborative work platform. Build scalable React/TypeScript applications, design systems, real-time collaboration (sync, offline, serialization), optimize performance and observability, mentor engineers, and collaborate with Product, Design, and Backend teams to deliver high-quality, maintainable user experiences.

Build and maintain Plane's local-first browser client surfaces: large, virtualized workspaces, collaborative editor, offline/caching layers, and shared design-system components. Work cross-functionally with designers and backend engineers, extend sync and conflict-resolution behavior, optimize rendering performance, and triage cross-browser and self-hosted issues.

Build and maintain a React + TypeScript customer-facing analytics application, creating dashboards, interactive visualizations, and accessible interfaces. Collaborate with product, design, and backend to shape APIs, frontend architecture, and shared component libraries while owning performance and code quality.

3-month contract Frontend Engineer to build client-facing UIs and integrations for cybersecurity use cases. Collaborate with product, design, and engineering to deliver secure, performant, scalable features, maintain component libraries and automated tests. Remote (GMT+8) role focused on TypeScript and modern web tooling.

Lead frontend platform architecture across web and mobile: design and evolve design systems, component libraries, build tooling, accessibility, internationalization, and developer experience. Partner with backend teams on GraphQL/Python, maintain security and compliance, mentor engineers, drive cross-team initiatives, and deliver scalable, high-quality frontend foundations used by multiple product teams.

Lead technical direction and contribute to the frontend codebase, building user-facing tools and mentoring team engineers to enhance user experiences.

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end developers, implement UI/UX designs, write clean maintainable code, and debug front-end issues to ensure high performance across devices and browsers.

Develop and maintain web application user interfaces using Vaadin and front-end technologies. Apply UI fundamentals (including Fitts' law), refactor enterprise applications, collaborate with clients, and mentor/train other front-end developers.

Owner of the public marketing site: maintain CMS and component library, build landing pages and commerce integrations, optimize performance and analytics, streamline content publishing, and collaborate with Design and Marketing to deliver polished, production web experiences.

Build and optimize customer-facing features with a frontend focus, owning end-to-end delivery. Work across the stack to implement APIs and data flows, improve performance and accessibility, debug production issues, and collaborate with product and design to ship high-quality, tested interfaces.

Design, develop, and maintain secure, scalable C#/.NET microservices running in Azure and Kubernetes. Implement data access with Azure Cosmos DB and Azure SQL, build RabbitMQ event-driven workflows, automate Azure infrastructure with Terraform, and manage CI/CD via Azure DevOps. Integrate with identity providers, ensure tenant-aware access control, perform code/design reviews, and mentor engineers while aligning systems with security and privacy requirements.

Build and maintain responsive, high-performance user-facing React/Next.js applications for privacy-focused web3 products. Collaborate with backend engineers, identify and fix performance bottlenecks, participate across the product lifecycle, write tested production-quality code, and iterate quickly on UX and developer-facing frameworks.

Build and maintain the company website, client-facing portal, and internal web apps. Design and structure web pages, implement UI enhancements, optimize performance and scalability, collaborate with backend engineers (Go), ensure brand-consistent design, and mentor teammates to drive product excellence.

Founding-team senior engineer to architect and build core platform components. Work with CEO/CTO to develop scalable distributed backend systems and frontend using React, Node.js and TypeScript. Implement solid coding practices, testing, CI/CD, and agile workflows while iterating rapidly in an early-stage fintech startup.

Own and evolve the front-end architecture for a high-throughput, real-time trading app using Next.js, React, and TypeScript. Build pixel-accurate, accessible, responsive UIs under strict performance budgets; optimize rendering, state management, data flow, and bundle size for sub-second interactions. Integrate with REST and WebSocket APIs, lead end-to-end feature development, set engineering standards, mentor engineers, and contribute across the stack when needed.

Design, build, and maintain high-performance Next.js + TypeScript front-end applications. Implement responsive, accessible UIs, optimize rendering and bundle size, integrate with REST and WebSocket APIs, contribute to back-end work as needed, uphold testing and documentation standards, and mentor junior engineers.