About the role

Role overview

Staff/Principal Frontend Engineer for a small, cross-disciplinary team building user-facing product surfaces for expert users working with dense, technical data. You’ll create fast, clear, genuinely usable interfaces for data-heavy views and integrations.

What you’ll do

Build and refine product features using React, TypeScript, and Next.js, with strong focus on craft and usability.
Work with backend engineers to integrate APIs and deliver smooth end-to-end experiences.
Partner with product and design to validate flows, prototype, and iterate.
Contribute to frontend architecture, especially for:
- handling large data volumes
- keeping the UI responsive under load
Optimize performance so complex, data-heavy views remain fast and fluid.

What we’re looking for

3+ years of frontend engineering experience, ideally shipping web applications or data-driven tools.
Strong command of React, TypeScript, and modern JavaScript tooling (Next.js preferred).
Strong UX and visual attention; willingness to push back on designs that won’t hold up in real use.
Ability to integrate with APIs and reason about client-server boundaries (e.g., REST/GraphQL).
Collaborative mindset and ability to contribute to product decisions, not only execute tasks.

Ideal background / nice to haves

Experience building products for technical/expert users (e.g., dashboards, time-series visualization, complex data-editing environments).
Familiarity with utility-first CSS (Tailwind or similar) and modern component libraries.
Performance engineering experience (e.g., rendering/virtualizing large datasets).
Bonus: exposure to WebGL, canvas-based visualization, or graphics programming.

Location / logistics

Remote within the United States.
Locations listed: New York (NY), Los Angeles (CA), or Austin (TX).
ITAR requirement: must be a U.S. citizen/ national, lawful permanent resident, refugee, asylee, or eligible for the required U.S. Department of State authorizations.

About UMATR

UMATR is partnering with a venture-backed startup that builds software infrastructure for advanced hardware systems. The platform ingests high-rate telemetry, validates autonomy and control software in real time, and provides engineers with a faster feedback loop while prioritizing safety and precision for regulated, mission-critical customers.

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