Rust/Go Backend Web Developer

I’m building a web-based product and the entire server side still needs to be put in place. The stack is flexible—either Rust (Actix-web, Rocket, or similar) or Go (net/http, Gin, Fiber, etc.) is acceptable as long as the final code is clean, performant, and well-documented.

Scope
• Design and implement the backend layer: REST/JSON endpoints, business logic, and data models.
• Wire it to a relational store (PostgreSQL preferred; open to alternatives if you can justify them).
• Add authentication, basic rate limiting, and logging.
• Write unit/integration tests and brief inline docs.
• Package everything with a runnable Dockerfile plus a short README so I can spin it up locally or on a VPS.

Acceptance criteria
• All endpoints return the expected payloads and status codes.
• Code passes the test suite with 90 %+ coverage.
• “docker compose up” builds and starts the service without manual tweaks.
• Latency for core endpoints stays under 200 ms on a modest cloud instance (2 vCPU, 4 GB RAM).

Send over a short note on which language you’d choose (Rust or Go) and why, plus one link or snippet that shows comparable work.