// Round 04 · 45 min · 20 credits
Technical interview.
Fundamentals, past projects, and debugging. How deep your understanding actually goes.
The technical deep-dive is where interviewers find the edge of what you know. It starts with something you’ve built or a concept from the job description, then keeps going one level deeper until you hit the bottom. Hardmode tailors the topics to the stack and seniority in the posting and keeps pulling the thread, so you learn where your understanding is solid and where it’s borrowed.
Scope
What this round covers
- Fundamentals the job relies on: networking, databases, concurrency, the runtime you’ll use
- A project from your background, explained at the right level of detail
- Debugging a scenario out loud, from symptom to root cause
- Saying “I don’t know” well, and reasoning toward an answer anyway
Session
How the session runs
01 —
Topic selection
Built from the stack and level in the job description, plus anything you want to drill.
02 —
Layered questioning
Each answer leads to a deeper follow-up. The interviewer stops when it finds the edge.
03 —
Scenario
A short debugging or incident scenario to see how you reason under uncertainty.
Personalised
Fitted to you
Your CV
Picks projects and technologies straight from your CV and asks how they really worked. Optional, and you can switch it off for any session.
Your difficulty
- Easy: A friendly interviewer who wants you to do well.
- Medium: A fair, professional interviewer. What most interviews feel like.
- Hard: A proper grilling, like a big-tech bar-raiser loop.
Review
What your feedback covers
- Where your understanding was solid, and where to go a level deeper
- Concepts worth reviewing, tied to the job description
- Ways to structure explanations when follow-ups keep coming
Detailed and supportive at every difficulty · No score, no verdict
Prep
Tips before you start
- Pick two projects and know them three levels deep.
- When stuck, say what you do know and reason from there.
- Use concrete numbers when you have them.
// Next round
The rest of the loop
// Player 1
Get ready for hard mode.
Paste the job you want. Run the loop until the real one feels like a rematch.
20 free credits · No card required