We're looking for experienced software engineers to design them.

The apps are TypeScript (React, Node, SQLite, Playwright). Use AI tools as much as you like to write code and tests.

• Writing realistic engineering tasks on full-stack web apps: the kind of problem a real team has in its backlog, on codebases that grow as each task builds on the last.
• Writing the tests that decide whether a solution is correct.
• Going beyond the UI: new services and APIs, a backend in another language (Go, Rust, Java), gRPC, rate limiting — drawing on systems you've actually built.
• Sharing what you've seen work in other projects and flagging what should change in ours.

• Solid professional software engineering experience, backend and frontend.
• You've built and debugged real systems, and you care about testing them well.
• Clear written communication, and comfort working independently from written docs.

Work arrangement: Fully remote

Eligible locations: Worldwide

A short screener, a brief AI interview, and a paid work trial on the codebase you'd keep working on. US and Canada preferred for timezone overlap; exceptional candidates elsewhere are welcome. LinkedIn and GitHub required.

• Your participation will not involve access to confidential or proprietary information from any employer, client, or institution.
• We are unable to support H1-B or STEM OPT candidates at this time.

• Payments are processed weekly based on services rendered.