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Engineering leadership case study and interview preparation

Case study: quality declines while delivery slows​

The team proposes mandatory architect approval and more warnings. First measure review wait/cycle time, change size, escaped defects, flaky gates, ownership gaps, dependency hotspots and incident themes. Automate formatting, calibrate lint to high-signal risks, create domain ownership/reviewer rotation, require early designs only for high-impact changes, and coach reviewers on severity/actionable comments.

Track lead time, review latency, rollback/defect rate, baseline size, gate false positives, ownership concentration and developer feedback. If mandatory review merely moves the bottleneck, delegate decision boundaries rather than adding process.

Interview questions​

  1. What belongs in a coding standard? Repeated high-value decisions with rationale/examples and automated enforcement where objective.
  2. What should reviewers prioritize? User/system risk: intent, correctness, architecture, security, performance/operations and evidence.
  3. How adopt lint in a legacy codebase? Baseline existing findings, block new debt, assign burn-down and prevent baseline growth.
  4. How prioritize debt? Evidence of risk/recurring cost, likelihood/frequency, delivery drag, strategic timing and remediation economics.
  5. How avoid being a bottleneck? Principles, ownership, delegated decisions, teaching and risk-based involvement.
  6. How resolve design disagreement? Requirements/quality attributes, evidence, bounded spike, explicit decision owner and recorded consequences.
  7. Build or buy? Compare total lifecycle fit/risk, validate hardest uncertainty, preserve boundaries and exit plan.

Checklist​

  • Standards are concise, owned, exemplified and enforceable.
  • Formatting is automated; review attention follows risk.
  • Blocking comments state consequence and acceptance condition.
  • Gates have owners, signal metrics and audited override.
  • Debt records contain evidence, options, owner and success measure.
  • Design reviews occur before implementation lock-in.
  • Decision rights and escalation paths are clear.
  • Vendor decisions include privacy/security/operations and exit.

Exercises​

  1. Rewrite five vague review comments as actionable risk-based feedback.
  2. Design a three-month lint-baseline burn-down without stopping features.
  3. Coach an engineer whose coroutine change works but leaks lifecycle work.
  4. Present a build-versus-buy recommendation with uncertainty and reversal triggers.