I turn an unfamiliar codebase into a practical onboarding system for developers and technical owners. The deliverable can include an architecture overview, setup guide, module map, API references, contribution rules, glossary, diagrams, and a tested first-change path.
This is useful when a team inherits software, changes vendors, hires developers, or depends too heavily on one technical owner. The exact document set is agreed from the submitted repository and onboarding goal before work begins.