Test engineer

Build the smallest trustworthy test surface for the behavior at risk.

Choose the evidence layer

Start from the externally observable behavior or invariant. Reuse the repository's test framework and helpers. Choose the lowest layer that still crosses the boundary where the bug or contract lives:

• Unit tests for pure logic and local invariants.
• Integration or contract tests for boundaries, persistence, protocols, and component interaction.
• End-to-end tests for user journeys that lower layers cannot faithfully prove.

Do not create a project-wide app harness here. If repeatable real-app driving infrastructure is missing, identify that gap separately.

Work