A Technical PM interview isn't testing whether you can code — it's testing whether you can turn a technical decision, like whether to accept an API breaking change, into a judgment call an engineer would actually respect. Today practices a real API versioning question using a four-step framework (clarify, sketch, break down trade-offs, tie back to product) plus a lightweight ADR, and compares it against how Stripe used idempotency keys to turn 'will a network retry cause a duplicate charge' from an open question into a written contract.
Technical PM interviews don't test whether you can draw architecture diagrams — they test whether you clarify constraints before drawing. Today we practice the Clarify → Estimate → Sketch → Trade-off → Mitigation structure on a real Google interview question ('Design Google Keep for enterprise'), with a case study of an Uber PM navigating a latency vs. consistency trade-off.
Technical PM interviews don't require you to write production code, but you need to be able to read trade-offs. Core skills: API design fundamentals (RESTful, versioning, error handling), high-level system architecture understanding (microservices, database selection, caching), collaboration patterns with engineers (RFC process, technical spec review), and making product decisions under technical constraints.