Delivery

Delivery interviews test planning under uncertainty: estimating with explicit assumptions, naming trade-offs, shipping vertical increments, and using feature flags with ownership and cleanup. Strong answers connect scope slices to risk reduction—not optimistic coding hours alone.

Subtopics: estimation, trade-offs, incremental delivery, feature flags.

On interviews: for a risky checkout redesign, propose slices, flag strategy, metrics, rollback, and what would invalidate the estimate.

Common pitfalls: single-date promises; big-bang merges; flags without owners or removal plans.

The trade-off is perceived predictability versus honest uncertainty and smaller validated increments.

Checklist:

• State assumptions and confidence ranges.
• Compare scope, quality, speed, and risk explicitly.
• Ship usable vertical slices.
• Own flags with defaults, monitoring, and cleanup.