Practice
Workplace simulations and interview practice. Optional beyond the weekday lessons; studios embed selected scenarios. Everything simulated is labelled.
- 100scenarios
- 25capabilities covered
- 62 hof simulated work
- 150interview questions
Scenarios by capability100
Production incident
Senior code review
Stakeholder simulation
Messy real-world data
ADR centre
Live coding and SQL
- SQL gym: rolling and same-weekday features with window functions30 min
- Python gym: entity-safe lag and rolling features in pandas30 min
- SQL gym: consecutive nearly-full streaks and why the first query lies35 min
- Python gym: turning cumulative booking curves into pickup in pandas35 min
- SQL gym: booking pace against the same weekday last year40 min
ML system design
Ambiguous business case
Verbal defense
Statistical traps
Ablations
Decision theory and value
Robustness and stress tests
Paper reproduction
RAG evaluation workbench
LLM failure lab
- Unsupported citations and broken JSON in a claims assistant35 min
- Injected instructions and a looping helpdesk agent40 min
- A claims summariser that never saw its last document35 min
- A refund assistant that paid twice, in the wrong unit35 min
- An oversized voucher late in a long baggage-claim conversation40 min
Multi-agent company
End-to-end lifecycle
Golden test set and regression
Hiring committee
AI cost–quality
Agents vs workflows
Teach-back and Socratic interviewer
Executive presentation
Research reading protocol
- Read a churn paper before believing its abstract35 min
- Read an agent benchmark paper before adopting its framework35 min
- Does long context make retrieval obsolete? Read the claim40 min
- A language-model judge that agrees with humans 85% of the time35 min
- LoRA matches full fine-tuning: how much can 400 invoices show?35 min
Interview gym159
- A pricing test on one airline route returns p = 0.03 for the difference in conversion between two fare displays.mid5 min
- A bank's card-fraud rule catches 95% of fraudulent transactions and flags 2% of legitimate ones. Fraud is 0.5% of the 200,000 transactions processed per day, and the fraud operations team can review…mid6 min
- An airline's baggage team reports (hypothetical figures) 18 mishandled-bag claims on 100,000 bags last quarter and 31 claims on 120,000 bags this quarter.mid8 min
- A weekly count of baggage-delay complaints averages 40 with a variance of 160 across weeks. A colleague builds a control chart with limits at the mean plus or minus three Poisson standard deviations…mid8 min
- A league table ranks two regional carriers on on-time performance (OTP), defined as the share of operated flights that arrive within 15 minutes of schedule (hypothetical figures).mid10 min
- A satisfaction analysis regresses a passenger's 1-10 satisfaction score on the delay they typed into a post-flight survey ("how many minutes late was your flight?").mid10 min