Designing, building, and consuming robust APIs
Two topics, one lesson each: a short primer, links to primary documentation, and exercises to prove the concept has stuck. Start with APIs & Integration Design.
Resource-oriented design, versioning, pagination, and idempotency — the choices that age well.
Start lessonThe SQL you actually use day to day, and enough data modeling to read an unfamiliar schema.
Start lessonWhat building this project taught me.
Support's "API Debugging in the Field" lesson covers reproducing a live customer bug in Postman. This trail covers designing the API in the first place — the same skills, from the other side of the request.
Unlike some other sections, neither of these two topics was a named gap in the job-hunting scan — they're foundational skills that show up across almost every job description reviewed.
