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Ruya AI is a venture-backed defense-tech company building AI-native intelligent software for sovereign institutions operating in mission-critical environments. The company is headquartered in Massachusetts with offices across the US, Europe, and the Middle East.
As a Backend Data Engineer on the Quant team, you will own backend services connecting frontend, AI agents, databases, identity systems, and external data providers. You'll design and maintain data pipelines and infrastructure that feed the Quant team's AI agent and evaluation systems, ensuring reliability, scalability, and observability in production.
Core responsibilities include:
- Design and maintain services using Python/FastAPI, TypeScript/Express
- Build secure REST APIs, SSE streams, and WebSocket-based features
- Own PostgreSQL schemas, migrations, transactions, and query performance optimization
- Support OIDC/JWT authentication and resource-scoped RBAC
- Integrate external data providers, handling authentication, pagination, rate limits, schema variance, and failure states
- Define stable, documented contracts for frontend and AI consumers
- Build unit, contract, and database-backed integration tests
- Instrument services with structured logging and diagnose production failures using tools like Sentry and Langfuse
- Collaborate with frontend and AI engineers throughout feature development
Required qualifications:
- Strong production experience with Python/FastAPI/TypeScript/Express
- Strong PostgreSQL knowledge (schema design, migrations, transactions, performance analysis)
- Experience with OAuth/OIDC, JWT validation, and authorization
- Understanding of concurrency, idempotency, retries, timeouts, and distributed failure modes
- Experience designing and testing stable service contracts
- Security-conscious approach to input validation, credentials, and sensitive data
- Experience using logs, traces, and error monitoring for production diagnostics
- Clear communication and cross-functional collaboration skills
Preferred qualifications include advanced Python/FastAPI/asyncio, Snowflake/ClickHouse, external API integrations, geospatial data, graph-oriented modeling, GCP/AWS, and durable background job systems like Temporal.
The role is based at headquarters in Massachusetts with flexibility for remote work in select US states (CA, MA, TX, MD, VA). The company also hires at locations in Dubai, Bosnia, Croatia, and Serbia with visa sponsorship available.
