Senior Full-Stack Frontend Engineer

Ruya AI • Massachusetts (US) - Onsite, MA

2d • Hybrid

About The Position

Ruya AI is a venture-backed defense-tech company building AI-native intelligent software for sovereign institutions and their affiliated organizations operating in mission-critical, high-stakes environments. Headquartered in Massachusetts (US), with offices across the U.S., Europe, and the Middle East, we are expanding our engineering team with people who demonstrate strong ownership, sound judgment, and the ability to turn complex requirements into reliable products.

The Quant team is responsible for our core product experience. Our software is built to turn complex, data-rich information into secure, next-gen interfaces for the government and government-related operators who rely on it. As part of this team, you'll design and build the user-facing systems and integrations behind those capabilities. You'll own the frontend experience layer, converting complex operator requirements into secure, reliable, and data-rich user interfaces. You'll work hands-on, building and operating these systems in close partnership with our product designer and other engineering teams.

Requirements

• Strong production experience with TypeScript, React, and modern frontend development.
• Experience building backend APIs with Node.js, Express, or a comparable framework.
• Practical knowledge of relational databases, preferably PostgreSQL.
• Understanding of authentication, authorization, browser security, and safe content rendering.
• Experience with automated unit, integration, and end-to-end testing.
• Ability to independently deliver frontend work.
• Strong product judgment and effective collaboration with designers and engineers.

Nice To Haves

• Next.js App Router, Tailwind CSS, TanStack Query, or Zustand.
• Mapbox GL, deck.gl, Cytoscape, AntV G6, or similar visualization libraries.
• SSE, WebSockets, or other real-time interfaces.
• Playwright, Vitest, and Testing Library.
• Sentry or comparable observability tooling.
• Experience building AI-enabled products or analyst/operator interfaces.

Responsibilities

• Own the frontend experience layer, converting complex operator requirements into secure, reliable, and data-rich user interfaces.
• Work hands-on, building and operating these systems in close partnership with our product designer and other engineering teams.
• Collaborate on backend integration, testing, and release.
• Deliver complex, data-rich product features.
• Implement and test critical user journeys, not only individual components.

Benefits

• Equity through Ruya AI's employee stock ownership plan (ESOP)
• Sign-on bonus
• Medical insurance
• Dental insurance
• Vision insurance
• Commuter benefits
• Relocation assistance
• Paid time off
• Leave-of-absence program (including time off for military service and medical events)

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed