Senior & Staff · Data engineering
The other chair at the table — clarity for your next interview
Structured, day-by-day prep for high-bar data roles: system design, trade-offs, and the signal Staff interviewers look for — without the noise.
How it works
Pick a track, show up daily, and use the same habits top candidates use: timed study, visible progress, and distraction-free reading when you need it.
- 1
Start in the prep hub
Pick your primary path: System Design, Coding, or Behavioral. Use Company formats as your loop map.
- 2
Study ~30 minutes per day
Use the lesson timer, then mark the day complete — stored locally in your browser.
- 3
Adjust reading mode
Light or sepia from the header; focus mode hides chrome for deep reading.
Prep tracks
Prep hub
Start here for the full roadmap, sequencing guidance, and links to every track.
Open hubSystem design
Frameworks, estimation, data models, and deep dives — scoped for data platforms, not generic CRUD apps.
Open trackCoding track
SQL, Python, and patterns that show up in real data engineering screens — structured like the design track.
Open trackBehavioral track
Build leadership and impact stories with short daily prompts and structured answer frameworks.
Open trackCompany formats
Understand the interview format by company so your prep matches the actual loop.
Open guides