Senior Frontend Developer

Senior Frontend Engineer (React / TypeScript)

Series A | Mission-Critical Systems | 100% Remote (USA)

We’re hiring a Senior Frontend Engineer to join a Series A systems startup (~40 engineers) building mission-critical platforms used for planning and high-stakes operational decision-making.

You’ll own complex, data-heavy front-end systems that sit at the core of our products. These applications are not marketing sites—they’re interactive, geospatial, and operational UIs where correctness, performance, and clarity directly impact real-world outcomes.

Our mission is to build and ship a dynamic, geospatial web application used in a mission-critical environment.

What You’ll Do:

• Own and ship front-end features end-to-end in a TypeScript / React codebase
• Build interactive geospatial UI workflows (Cesium-based) and the surrounding application UX
• Translate ambiguous requirements into working increments: break down tasks, identify dependencies, prioritize, and execute
• Improve UI performance and reliability in a data-heavy, highly dynamic application
• Collaborate closely with backend engineers to define API contracts, unblock yourself, and move work forward without heavy hand-holding
• Take features from concept → implementation → production ownership
• Contribute to frontend standards including code quality, component patterns, testing strategy, and release hygiene

What We’re Looking For:

• Extensive experience building production React applications (TypeScript strongly preferred)
• Proven ability to own features and drive them to completion in a small, fast-moving team
• Experience building complex, interactive UIs involving state management, async flows, and performance considerations
• Familiarity with component libraries and design systems (we use MUI / Material UI)
• Strong debugging and problem-solving skills—comfortable unblocking yourself rather than waiting on others
• Comfortable collaborating in a shared codebase with established standards and best practices

Nice-to-Haves:

• Geospatial / GIS experience (Cesium, map-heavy UIs, geo-data interactions)
• Some backend familiarity—enough to understand APIs, debug issues, and collaborate smoothly
• Python experience as a plus when working cross-stack with our environment
• Experience supporting simulation-style or real-time-ish workflows (gaming, visualization, mapping, flight/vehicle systems, etc.)

This Role Is:

• 100% Remote (USA only) with HQ in Boston
• Salary up to $220k
• Additional benefits

If this sounds like the kind of frontend engineering you want to be doing—owning complex, high-impact UI systems—we’d love to talk.