Frontend Developer Jobs in Massachusetts, United States

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

We’re looking to bring on an experienced frontend engineer to develop and enhance new features on LangSmith, our enterprise platform product for LLM application observability, testing, and debugging.

Great Gray is looking to add a Senior Frontend Engineer on our Technology team. The engineer we seek comes with strong experience with frontend languages and frameworks (ex.

As a frontend engineer at General Medicine, you'll help build and scale a healthcare store that makes it delightfully simple to shop for any type of care. We provide upfront cash and insurance prices for virtual and in-person visits, prescriptions, labs, imaging, and more.

Senior Frontend Engineer role at Sevenai focuses on designing and building user-facing components for an AI-native cloud platform. The position involves architecting scalable, high-performance web interfaces that make complex cybersecurity capabilities intuitive and accessible.

The Frontend Software Engineer is part of the development team, which has the responsibility for building, maintaining, enhancing and integrating home built custom applications using different technology stacks and connected systems. A frontend engineer at Sentinel learns and conducts requirement analysis, documents technical specifications, test plans, writes, reviews, debugs code and performs releases.

Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise.

As a Senior Software Engineer II, you will join a world-class engineering team operating the only end-to-end platform in the real estate industry. We are building a high-caliber talent pool of Frontend Senior Engineers to lead technical initiatives across several key domain areas.

As a Software Engineer in Lattice for Cyber, you will build the core capabilities, experiences, and primitives that our offensive Cyber programs rely on. You will solve a wide variety of problems involving networking, autonomy, systems integration, robotics, and more, while making pragmatic engineering tradeoffs along the way.