Deep-Dive a Recent Project (Technical Screen)

Provide a structured walkthrough of one recent project you led or significantly contributed to. Choose a project from the last 6–18 months where you can speak to architecture and decisions.

Cover the following in order:

1. Problem and Context
   • What was broken or insufficient? Who was affected? Where does this sit in the system?
2. Goals and Constraints
   • Business and technical goals with quantified targets (e.g., latency, throughput, SLOs, scale, cost, security/compliance).
3. Your Responsibilities and Decisions
   • Your role, ownership boundaries, and the key decisions you personally made.
4. Architecture and Key Components
   • Current vs. target state; data flow; services; storage; interfaces/APIs; deployment/runtime.
5. Trade-offs and Alternatives Considered
   • Options compared, pros/cons, and why you chose your path (e.g., CAP, build vs. buy, batch vs. streaming).
6. Timeline and Risks
   • Milestones, dependencies, risks, and mitigations.
7. Metrics for Success and Actual Results
   • SLIs/SLOs, before/after metrics, reliability, cost, user impact.
8. Postmortem and What You’d Change
   • Lessons learned, what you’d do differently, and follow-ups.

Aim for 5–7 minutes for the walkthrough plus Q&A.