Test strategy & coverage audit — finding out what’s actually being tested today versus what should be.
Automated test suites — unit, integration, and end-to-end coverage where it earns its keep.
Manual exploratory & edge-case testing — the bugs automated tests don’t know to look for.
Performance & load testing — tested against the kind of traffic spikes that actually break sites.
Bug triage & reporting workflows — clear, actionable reports instead of a vague "it’s broken."
CI-integrated testing — so regressions get caught before merge, before a user ever sees them.