Proof over promises
Hire full-stack developers who prove both ends work
Full-stack roles are judged on whether someone can connect a working frontend to a working backend cleanly — data flowing correctly, sensible API design, and a UI that reflects real state. That's difficult to assess from separate frontend and backend examples.
How the challenge works for this category
Each invited developer builds a working end-to-end slice of your brief in 24 hours — a UI wired to a real API and data store — so you can see the whole stack working together, not just isolated pieces.
A working end-to-end feature, frontend connected to backend
A video walking through the data flow and architecture
Their proposed technical approach for the complete build