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Testing — Senior

Build a risk-based portfolio: correctness, security, compatibility, performance, recovery, and data integrity. Manage representative, privacy-safe test data and reproducible environments.

Test production safely through canaries, shadow traffic, synthetic probes, feature flags, and bounded experiments. Load tests need realistic arrival patterns, data shapes, dependency behavior, and saturation criteria.

Test yourself

  1. Which risk deserves end-to-end coverage?
  2. How do you prevent test-data privacy failures?
  3. Why can closed-loop load tests hide overload?
  4. What production test requires automatic rollback?

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