Mock System-Design HLD Interview

Who it’s for

• 1-8 YOE engineers prepping for SDE-2/3 rounds where HLD is the deal-breaker.

Session Flow

1. Problem drop (5 min) – pick a real interview prompt (e.g., “design Instagram feed”).

2. You design (35 min) – draw high-level components, data flow, scaling levers.

3. Stress test (10 min) – curve-balls: 10× traffic, multi-region, cost slash.

4. Debrief (10 min) – instant feedback, trade-off gaps, next-step advice.

What you take away

✓ 4-page evaluator rubric (similar to Google/Lyft)

✓ Annotated architecture diagram (PNG + Whimsical link)

✓ Personal “must-mention” checklist for your next real interview

Rules & Boundaries

• Reschedule ≥ 24 h ahead; no-show burns slot.

• Recording shared within 2 h.

• Confidentiality assured—NDA available on request.