← Back to Home

Section 17 · E. Win the interview

Round 4 — ML System Design

A 60-minute whiteboard graded on whether you can run the meeting: clarify → architect → trade-offs → metrics → failure modes. The 8-step framework and a worked RAG-chatbot walkthrough.

← Global Jobs & Interview Prep — Australia, UK, US & Canada
27topics162interview Q&A132practice problems27videos

Topics in this section

Each topic pairs a video with the theory, interview questions & answers, and practice problems whose solutions unlock as you complete them.

17.1
The 8-Step Framework
Video7 Q&A5 practice22 min
17.2
Worked Walkthrough — RAG Support Chatbot
Video7 Q&A5 practice20 min
17.3
Clarifying & Scoping — Running the First Five Minutes
Video6 Q&A5 practice16 min
17.4
Framing the ML Problem — Regression, Ranking, Retrieval, Generation
Video6 Q&A5 practice15 min
17.5
Data, Labels & the Leakage Audit
Video6 Q&A5 practice16 min
17.6
Features & the Feature Store — Killing Train/Serve Skew
Video6 Q&A5 practice15 min
17.7
Model Choice & the One-Alternative Habit
Video6 Q&A5 practice15 min
17.8
Offline Metrics — Picking the Number That Matches the Business
Video6 Q&A5 practice14 min
17.9
Training, Validation & Temporal Splits
Video6 Q&A5 practice14 min
17.10
Serving — Batch vs Online, Latency & Caching
Video6 Q&A5 practice15 min
17.11
Scaling, Sharding & Cost at Production Volume
Video6 Q&A5 practice15 min
17.12
Monitoring & Drift Detection
Video6 Q&A5 practice15 min
17.13
Failure Modes, Rollback & Graceful Degradation
Video6 Q&A5 practice14 min
17.14
A/B Testing & Online Experimentation
Video6 Q&A5 practice15 min
17.15
Recommendation & Ranking — The Two-Stage Pattern
Video6 Q&A5 practice16 min
17.16
Search & Semantic Retrieval Systems
Video6 Q&A5 practice15 min
17.17
Real-Time Fraud Detection — Streaming Features Under Latency
Video6 Q&A5 practice15 min
17.18
RAG at Depth — Chunking, Hybrid Retrieval & Reranking
Video6 Q&A5 practice16 min
17.19
Evaluating LLM Systems — The Part Juniors Skip
Video6 Q&A5 practice15 min
17.20
Agentic & Tool-Use Systems — Reliability at Scale
Video8 Q&A6 practice15 min
17.21
Multi-Tenant LLM Platforms — Isolation, Quotas & Cost
Video6 Q&A5 practice15 min
17.22
LLM Serving & Cost Engineering — Caching, Routing, Batching
Video6 Q&A5 practice14 min
17.23
Whiteboard Communication — Driving the Meeting
Video6 Q&A5 practice13 min
17.24
The 10 Canonical Prompts — A Sketch For Each
Video6 Q&A5 practice18 min
17.25
The Worked Example — A Full 60-Minute Design Round, Annotated
Video6 Q&A5 practice18 min
17.26
Back-of-the-Envelope Capacity Estimation
Video4 Q&A3 practice16 min
17.27
Real-Time Delivery — WebSockets, SSE & Polling
Video4 Q&A3 practice14 min