Frontend Developer Jobs in Massachusetts, United States

Digital Product team at BRUNT Workwear builds the Shopify Plus commerce ecosystem that powers DTC, B2B and POS experiences. The Frontend Developer translates design and product vision into high‑quality Liquid, HTML, CSS and JavaScript code, maintains and enhances storefronts, wholesale catalog and POS, and integrates Shopify apps while coordinating with an external development partner.

Frontend C2 Systems team at Booz Allen Hamilton builds mission-critical C2 applications for defense customers. The lead full stack developer designs and delivers end‑to‑end web solutions, mentors a team, and ensures compliance with security and accessibility standards.

Air Space Intelligence seeks a Frontend Engineer to build high‑performance, map‑driven web interfaces for mission‑critical air traffic operations. The role involves crafting real‑time, geospatial dashboards, collaborating with designers, and leveraging modern web technologies to deliver responsive, data‑rich experiences.

Remark Frontend Team builds the user-facing experience of Remark’s AI‑enhanced e‑commerce platform. The engineer designs, develops, and maintains responsive React/Next.js applications, collaborates on UI/UX design, and optimizes performance and accessibility.

Frontend Engineering team building a healthcare e‑commerce platform that lets patients shop for care online. The role designs, builds, and maintains React and TypeScript front‑end features while collaborating with clinicians and operations to translate workflow needs into polished UI. Hybrid work model: three days onsite in Cambridge, MA or San Francisco, CA and two days remote, with multiple openings available.

LangChain seeks a Senior Frontend Engineer to enhance LangSmith, its enterprise platform for LLM application observability and debugging. The role involves developing new user-facing features using React and TypeScript, building reusable components, and optimizing performance across devices.

LangChain seeks a Frontend Engineer to enhance LangSmith, its enterprise platform for LLM application observability and debugging. The role involves developing user-facing features using React and TypeScript while collaborating with cross-functional teams.

Civil Aviation Team at Air Space Intelligence modernizes America’s air traffic control system, building next‑generation trajectory prediction and decision‑support tools for safety‑critical airspace operations. As a Frontend Engineer you will develop user‑facing features in React, Redux, Mapbox and TypeScript, collaborating with civil aviation and design teams to deliver high‑precision, real‑time map‑based interfaces.

AI-native data integration platform team at Brown Brothers Harriman builds a single AI-driven platform for configuring, transforming, and monitoring financial data integrations. The Frontend Engineer owns the client‑side experience, turning Figma designs into high‑performance Angular components, integrating with Python APIs, and implementing AI‑generated UI patterns.

General Medicine's consumer healthcare team builds a seamless web experience for patients to shop care services. The Frontend Engineer owns major surfaces of the Next.js app—from search and scheduling to provider profiles and checkout—optimizing UI polish, performance, accessibility, and collaborating with design, operations, and clinical stakeholders.

Suno is building a future where anyone can create music with just a few words. As a Staff Software Engineer, Frontend, you’ll join a talented team of musicians and AI experts to design and build web applications that enable users to create, explore, and listen to music.

General Medicine builds a consumer healthcare platform that simplifies shopping for care, offering transparent pricing for virtual and in‑person services. As a Frontend Engineer you will own major surfaces of the Next.js web app—from search and scheduling to provider profiles and checkout—collaborating with design, operations, and clinical stakeholders to deliver a polished, high‑performance experience.

Web Modernization program at Scribd builds the next‑generation web experience for billions of readers. The Senior Frontend Engineer leads major modernization workstreams, ships production‑critical code, and defines reusable patterns for micro‑frontend migration.

Senior Frontend Engineer at Mobi.AI will lead the creation of AI‑driven user interfaces for travel and transportation solutions. Working with React, TypeScript, and modern build tools, you’ll translate design wireframes into responsive, accessible code, optimize performance, and integrate cutting‑edge AI assistants via the Model Context Protocol.

Rockstar Games seeks a Senior Frontend Engineer to build robust, accessible web experiences for its global community. The role focuses on the technical backbone of front‑end delivery, integrating React components with Next.js and ASP.NET Core services.

LangChain is building the infrastructure that powers the next generation of AI applications, with a mission to make intelligent agents ubiquitous. As a Senior Frontend Platform Engineer on the Design Systems team, you will build, own, and evolve LangChain's component library, partnering closely with designers and product engineers to turn design intent into robust, reusable React components and tooling.

Platform Technologies Language & Frontend Design Engineer at SiFive. Design and build domain-specific languages in Scala and Python for SoC design, contribute to Chisel and LLVM CIRCT communities, integrate with MLIR stack, and document tools.

AI Startup at Pragmatike builds high-performance, data-intensive AI products for Fortune 500 customers. The Senior UI Frontend Engineer will design and implement responsive, accessible React interfaces, optimize performance for large datasets, and own feature delivery end‑to‑end while collaborating with design and backend teams.

Real-Time Operations (RTO) team at Axon builds mission‑critical situational awareness software for emergency responders. As a Staff Full Stack Software Engineer you will define and own the client architecture and frontend foundations, shaping modular, configurable platforms that scale to millions of users across verticals and regions.

Senior Frontend Software Engineer on Cognex’s industrial automation engineering team. Designs and builds responsive, accessible Angular web apps that power machine vision solutions, collaborating with backend Python APIs and global product owners.