Top Front End Developer Jobs in Boston, MA

Build a high-performance frontend data platform for exploring and analyzing hardware telemetry. Develop React and TypeScript applications, interactive time-series visualizations, data visualization plugins, complex application state management, and LLM-assisted analysis workflows. Collaborate directly with hardware engineers and customers to define interfaces, prototype workflows, demonstrate features, and incorporate feedback into product development.

Build and ship member-facing web features using React, Next.js, and Tailwind CSS. Implement responsive, accessible interfaces, test user journeys, participate in code reviews, collaborate with product, design, and backend teams, and contribute to performance and maintainability. The role includes AI-assisted prototyping, frontend API integration, learning team systems, and participating in on-call rotations under senior guidance.

Build and improve high-traffic consumer web experiences using React and TypeScript. Contribute to experimentation, client-side tagging, marketing integrations, attribution, measurement, performance, testing, observability, and privacy-aware development. Collaborate with Product, Design, Marketing, Analytics, Data Engineering, and senior engineers. Break down projects, write reliable and extensible code, support operations and on-call efforts, participate in code reviews, and contribute to team growth.

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Lead frontend engineering for large-scale React web applications. Architect application patterns, structure, libraries, and coding standards; build React applications end to end; conduct code reviews; mentor engineers; promote performance, scalability, and maintainability; and collaborate with designers, product managers, and technical and non-technical stakeholders.

Build and operate customer-facing frontend experiences for search, recommendations, and generative AI. Own software development end to end, including architecture, implementation, testing, delivery, observability, and long-term evolution. Collaborate with backend, machine learning, product, and design teams; review code, advise on technical designs, participate in interviews, and mentor engineers. Improve performance, scalability, accessibility, maintainability, and developer experience across complex frontend systems.

Design, build, and deliver front-end features with strong UX focus. Own technical design, coding, testing, deployment, and monitoring in a continuous delivery, microservices environment. Collaborate with Product, implement automated QA practices, and contribute to production deployments while practicing robust testing methodologies.

Build high-performance, responsive, and accessible frontend applications across e-commerce, B2B, and internal tools using Next.js, React, and TypeScript. Implement design-system components, optimize Core Web Vitals, add animations, support A/B testing, collaborate in a monorepo with backend teams, and design interfaces for AI agents with real-time streaming and error handling.

Volunteer Principal Front End Developer to build React/React Native web and mobile features, mentor engineers, implement scalable full‑stack solutions, ensure cross‑browser compatibility and testing, work with Node/MongoDB/AWS, attend weekly standups, and support a fundraising launch. Minimum 4 hours/week commitment.

Build the realtime, HIPAA-compliant messaging and collaboration frontend ('Pulse') that makes an AI colleague feel human. Implement complex interactive data visualizations, micro-interactions, and high-performance accessible interfaces. Work embedded with product and design, own UI quality, iterate on AI-driven specs, and deliver production frontend experiences clinicians will trust.

Build and operate full-stack applications, customer portals, APIs, and backend services supporting usage metering, billing, provisioning, and cloud marketplace integrations. Develop primarily with TypeScript and React, alongside Golang and Node.js services. Lead technical design, improve reliability and observability, optimize CI/CD, participate in on-call, mentor engineers, and coordinate cross-functionally. Own production behavior across distributed systems, including reconciliation, rollout controls, monitoring, and recovery procedures.

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.

Build and scale a consumer healthcare web application using Next.js, React, and TypeScript. Own major product surfaces including search, scheduling, provider profiles, and checkout while ensuring strong performance, accessibility, UI quality, and cross-browser compatibility. Collaborate with design, operations, and clinical stakeholders; make frontend architecture decisions; work with Rails APIs and Postgres; write SQL, product requirements, tests, and QA; and deliver features across the stack.

Build polished, responsive front-end applications for Chiri Brain and client-specific AI solutions. Design user flows, prototypes, interfaces, reusable components, and design systems while integrating APIs, authentication, business data, agent workflows, and security controls. Work directly with customers and stakeholders to understand needs, rapidly prototype, gather feedback, and ship production-quality software. Help establish scalable front-end architecture and use AI-assisted development tools to accelerate delivery.

Design, build, and optimize responsive, high-performance front-end interfaces for a Web3 DEX using modern JavaScript frameworks and TypeScript. Collaborate with designers, product, and back-end teams to integrate blockchain APIs and smart contracts, mentor junior developers, troubleshoot issues, and contribute to mobile-first/PWA development while ensuring scalability and maintainability.

Develop and maintain responsive, accessible web applications using Oracle APEX, HTML, CSS, JavaScript, SQL, and PL/SQL. Build APEX pages, forms, reports, grids, dynamic actions, integrations, and reusable UI components. Troubleshoot issues across the user interface, application, API, and database layers; support testing, deployment, production operations, and Agile development. Collaborate with backend developers, database specialists, UX personnel, testers, product owners, and federal stakeholders while meeting Section 508 accessibility requirements.

Build and ship frontend features for a financial marketplace using React and Next.js. Collaborate with product, design, and backend engineers; contribute to architecture, component design, code quality, tooling, and the shared component library. Own work from design through delivery, participate in pairing and code reviews, and use AI-assisted development tools thoughtfully.

The Fullstack Engineer will own the marketing site stack, leading development of customer-facing tools, enhancing user experience, and collaborating with design and marketing teams.

Build and own frontend applications for DeFi products using Next.js and TypeScript. Develop reusable component libraries and design systems, integrate Solana programs and wallet infrastructure, and translate complex financial concepts into accessible interfaces. Own performance, reliability, observability, testing, analytics, and end-to-end feature delivery while collaborating with protocol engineers, designers, and product teams.

Senior Front End Software Engineer responsible for architecting, building, and maintaining high-performance applications across frontend, backend, cloud, and event-driven systems. The role leads complex technical initiatives, integrates AI and data pipelines, ensures software quality through testing and reviews, owns applications throughout their lifecycle, documents architecture, collaborates cross-functionally, and mentors engineers. Primary technologies include TypeScript, JavaScript, React, Node.js, AWS, and modern CI/CD and containerization practices.

Lead frontend engineering for the DataLab product, developing scalable React and TypeScript interfaces for enterprise financial applications. Guide frontend architecture, component design, accessibility, performance, developer experience, and testing practices. Collaborate with product managers and backend engineers, mentor teammates, make technical decisions, and promote AI-assisted coding tools while maintaining high standards for security, quality, and maintainability.

Leads frontend software development across strategic product domains, designing and building dashboards, notifications, reporting interfaces, and intelligent automation. Independently drives complex technical projects, integrates AI models and data pipelines, improves performance, writes automated tests, conducts code reviews, documents architectures, owns applications throughout their lifecycle, and mentors engineers. Collaborates with cross-functional stakeholders to deliver scalable tools for real estate agents.

Build and maintain React and TypeScript web applications for EEG analytics, clinical study management, and at-home patient diagnostics. Own user experience, performance, reliability, and observability while designing data-rich workflows and interactive visualizations. Collaborate asynchronously with product designers and cross-functional teams, contribute to roadmap direction, and develop scalable GraphQL consumers. The role involves supporting clinical operations, physician workflows, and diagnostic reporting.

Principal Frontend Engineer responsible for defining and governing large-scale frontend architecture across clinical applications. Leads modernization from fragmented systems to a React-based platform using JavaScript, TypeScript, Node.js, GraphQL, and shared component standards. Drives migration strategy, technical governance, performance improvements, AI-assisted development tooling, and cross-team alignment while mentoring engineers. Advises on CI/CD, AWS infrastructure, Oracle integrations, legacy Perl utilities, security, hiring, and long-term workforce planning.

Lead frontend architecture and delivery for React-based clinical applications. Mentor engineers, establish component libraries and coding standards, integrate GraphQL and REST APIs, support Node.js tooling and server-side rendering, lead migration to a unified architecture, and drive testing, performance, accessibility, deployment readiness, and cross-functional technical alignment.