Front End Developer Jobs in Cambridge, MA

Develop user interfaces for air traffic systems, focusing on map-based applications and real-time data processing.

The Principal Front-End Engineer will enhance the Growth team's platform and infrastructure by developing tools, managing applications, and ensuring a high-quality user experience across projects.

Mark43 seeks an experienced Front-End Engineer to design and implement scalable cloud-based software. Responsibilities include collaborating with product teams, coding with React and Typescript, and improving software architecture.

As a Frontend Software Engineer, design, develop, and deploy web applications, collaborate with UX engineers, and implement user-friendly interfaces.

The Senior Software Engineer will lead web experience architecture, mentor engineers, manage technical projects, and enhance frontend performance and reliability through data-driven decision making.

The Software Engineer II (Frontend) will design and develop user experiences for WHOOP's digital products, focusing on responsive web applications and collaboration across teams.

As a Software Engineer I on the Growth team, you'll develop and maintain frontend applications, implement experiments, and improve user experiences while collaborating closely with cross-functional teams.

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.

Build and maintain high-quality user interfaces for complex AI products, optimizing performance and collaborating with cross-functional teams.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.

The Staff Frontend Engineer will develop user-facing features, enhance performance, mentor junior engineers, and collaborate with product leadership and design teams.

Lead frontend architecture and implementation for an AI-driven platform: build performant, responsive React/TypeScript applications, manage complex state and real-time updates, establish component libraries, testing, CI/CD, mentor junior engineers, and drive frontend best practices and scalability.

Senior front-end engineer to build scalable, real-time, data-driven web applications using Angular, TypeScript, RxJS, and WebGL. Collaborate with product and engineering teams, implement complex UIs and asynchronous/streaming data interactions; full-stack knowledge and Firebase/GCP familiarity are a plus.

The role involves designing and developing web applications, integrating with back-end services, and producing high-quality code while mentoring other developers.

As a Senior Frontend Engineer, you'll lead frontend technical delivery and build React-based applications, collaborating with AI engineers and other teams to create trusted enterprise-ready product experiences.

Design and implement pixel-perfect, high-performance web applications from wireframes to production. Collaborate with designers, PMs, and engineers, iterate on architecture and best practices, explore AI/ML integrations, and contribute to a collaborative engineering culture.

Build and optimize frontend signup and activation experiences using modern JavaScript and TypeScript. Collaborate with product, design, and analytics to implement high-converting, accessible, and performant user flows, own features from design through implementation, and participate in experimentation and personalization to improve conversion.

Own and scale quality infrastructure for web engineering during the migration from a monolith to microfrontends. Build shared testing frameworks, tooling, CI/CD quality gates, and metrics; shift coverage toward unit, component, integration, and contract tests; enable AI-driven testing workflows and agent verification; mentor engineers and drive adoption of quality practices across teams.

Join the frontend team to design and implement complex, real-time, data-driven web applications using Angular and observables. Collaborate with product and engineering to deliver scalable, reliable cloud-based features, handle asynchronous/streaming data, and contribute frontend business logic. Full-stack and Firebase experience is a plus.

Lead frontend design and implementation for patient and physician products, shape frontend architecture (design systems, state, testing, performance), integrate AI/LLM features with backend/ML teams, and deliver polished, accessible, high-performance interfaces in a hybrid NYC/Boston environment.

Design and build user-facing components for an AI-native cloud platform, ensuring scalability and performance, mentoring engineers, and optimizing web interfaces.

The Full-Stack Engineer will enhance backend functionality, collaborate with teams, and maintain platform performance and security, requiring expertise in Python.

Build and own responsive, high-performance React + TypeScript web applications. Design frontend architecture, reusable components, state management, and data-fetching. Collaborate with product and backend teams, optimize performance and accessibility, and improve developer tooling and workflows. Contribute across the stack when needed.

This role involves building production-grade React applications with TypeScript, developing a component library, collaborating on API integration, and shaping frontend architecture for an AI-powered hardware product platform.

Develop and maintain front-end and back-end components of AI-driven products, collaborating with teams to enhance user experience and build proof of concept products.