Senior Full-Stack Frontend Engineer

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.

Quant is the team 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.

• Strong production experience with Type Script, React, and modern frontend development.
• Experience building backend APIs with Node.js, Express, or a comparable framework.
• Practical knowledge of relational databases, preferably PostgreSQL.
• Experience delivering complex, data-rich product features.
• 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 while collaborating on backend integration, testing, and release.
• Strong product judgment and effective collaboration with designers and engineers.

• js App Router, Tailwind CSS, Tan Stack Query, or Zustand.
• Mapbox GL, deck.gl, Cytoscape, AntV G6, or similar visualization libraries.
• SSE, Web Sockets, or other real-time interfaces.
• Playwright, Vitest, and Testing Library.
• Sentry or comparable observability tooling.
• Experience implementing and testing critical user journeys, not only individual components.
• Experience building AI-enabled products or analyst/operator interfaces.

In the US, this role is based at our headquarters in Massachusetts, where much of the work takes place. Remote arrangements are also available in California, Massachusetts, Texas, Maryland, Virginia and across the US.

We also hire at our locations in Dubai (UAE), Bosnia, Croatia, and Serbia. Visa sponsorship and relocation assistance are available for our UAE and European locations.

The salary range for this role is highly competitive and benchmarked to market. Total compensation may also include equity through Ruya AI's employee stock ownership plan (ESOP), a sign-on bonus, and other incentives over time. Final compensation reflects each candidate's qualifications, experience, skills, certifications, and work location. All offers are contingent on a satisfactory background check and, where applicable, a reference check.

Military fellows and part-time employees are not eligible for benefits.

Our benefits are designed to support the health and wellbeing of every Ruyan. We regularly review and refine our offerings based on employee feedback. Below are some of the benefits and perks available to Ruya AI employees:

• Employees (and their eligible dependents) can enroll in medical, dental, and vision insurance
• Commuter benefits
• Relocation assistance
• Paid time off built into the end of each year (subject to team and business needs) and based on location
• A supportive leave-of-absence program, including time off for military service and medical events

Growth at Ruya AI isn't tied to a fixed ladder. We pay attention to what each Ruyan is good at and where they want to go, and we shape roles and opportunities around that. Health and wellbeing benefits are part of this investment, though specifics can vary by region.

We work primarily from our offices because in-person collaboration produces better outcomes, and most teams offer one or two remote days a week. A small number of roles are remote-eligible on an exception basis; employees in those roles must be based in the state where they're employed, and roles marked onsite require working from an office.

Ruya AI is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender identity or Veteran status. If you have a disability or special need that requires accommodation, please let us know.