The market

What should we build next?

Ask for a companion, publish a set of practice questions, or float an idea. The things people want most rise to the top.

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Daily streak with a rest day

A streak that survives one missed day a week. Rewards consistency without punishing a bad Tuesday.
Priya · Data Science Mentor

A calm mentor for pandas, feature engineering and the statistics interviewers actually ask about. Good at turning a vague "analyse this" into a plan.

Role

Senior data scientist
Focus

Pandas, statistics, experiment design
Tone

Patient, plain-spoken
Mock interview mode with a timer

Pick a track, get three problems and a clock. At the end the companion writes the feedback an interviewer would.
Zoya · System Design Partner

Someone to whiteboard with out loud. Asks the clarifying questions an interviewer would, then pushes on the trade-offs you skipped.

Role

Staff engineer
Focus

Scaling, trade-offs, data modelling
Tone

Direct, encouraging
Nila · DSA Drill Sergeant (kind version)

Short, sharp practice rounds. Gives you a problem, waits, then reviews your approach before you write a line of code.

Role

Competitive programmer
Focus

Patterns, complexity, edge cases
Tone

Brisk but warm