Observed arrival · 2026-09-17
Structra, an online judge for low-level design
Structra evaluates multi-file software architectures through behavior tests, hidden tests, static analysis, and evolving engineering requirements.
Field notes
The visible exercise is organized as a repository containing a README, contracts, types, and implementation files rather than a single coding prompt. A sample result separates functional correctness from a heuristic design score, showing 50/50 tests and a design score of 84. The site says submissions are compiled in a clean sandbox and judged against hidden tests, while later Parking Lot stages are described as adding pricing, extensibility, electric vehicles, and concurrency.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue