Product and engineering process

This domain covers how strong engineers turn ambiguity into shippable work: requirements discovery, delivery planning, team collaboration, and interview communication. FullStack interviews often blend technical design with product judgment—interviewers want explicit constraints, observable outcomes, and evidence-backed trade-offs.

Sub-areas: requirements (clarifying questions through acceptance criteria), delivery (estimation through feature flags), collaboration (review through documentation), interview communication (thinking aloud through defending decisions).

On interviews: for a vague feature request, ask who benefits, what "done" looks like, which edge states matter, how you would slice delivery, and what evidence would change your mind.

Common pitfalls: coding before clarifying scope; estimates without uncertainty; review comments that are taste without impact; incident updates without owners; opinions without metrics or tests.

The trade-off is speed of starting implementation versus cost of rework when requirements and constraints stay implicit.

Checklist:

• Restate the user goal and success signal.
• Surface constraints before architecture.
• Propose thin vertical slices with rollback.
• Communicate trade-offs and residual risk.