Deep technical project narrative and lessons learned Questions
Prepare detailed discussion of a significant project: the problem, your approach, technical decisions and trade-offs, challenges and how you overcame them, outcome, and what you learned. Practice explaining this clearly in 10-15 minutes, leaving time for questions.
MediumTechnical
0 practiced
Explain how you planned for long-term maintenance and ownership: the model for service/feature ownership, SLOs and error budgets, budget for tech debt and refactors, and a roadmap for future iterations. How did you convince product and leadership to allocate resources for maintenance?
MediumTechnical
0 practiced
Walk through the CI/CD pipeline for the project: stages (build/test/deploy), gating rules for promotion, how you optimized for speed (parallelization, caching), and strategies you used for flaky or long-running integration tests. Include any tools or orchestration you used.
MediumTechnical
0 practiced
If you performed a data migration as part of the project, explain the migration strategy you used to ensure minimal downtime and data correctness. Discuss schema evolution patterns, backward/forward compatibility, shadow writes, reconciliation jobs, and how you tested the migration path.
HardSystem Design
0 practiced
You presented a multi-region architecture. Defend your choices for data partitioning and replication, the consistency model selected (strong vs eventual), failover strategy, and how you minimized cross-region latency while maintaining correctness and availability at scale.
EasyTechnical
0 practiced
Explain the testing and QA strategy used for the project: unit, integration, end-to-end tests, load/performance testing, and any automated gating in CI. Specify tools, coverage goals, how you handled flaky tests, and how defects were triaged and tracked.
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