Interview OS for candidates
Close the loop between practice and performance.
Run voice-first mock interviews, get rubric-aligned scores, and watch weak spots shrink—session by session. Built for serious software candidates who want a prep system, not scattered notes.
No credit card. Set role, level, and topic in under a minute.
- Modes
- Dataset + live AI
- Feedback
- Structured scorecards
- Progress
- History & trends
Last session
8.4
+0.6 vs prior
Session·Staff Engineer, system design
Voice
LiveFollow-ups on — natural pacing
Input level
Active prompt
Design a URL shortener that survives viral traffic and operator mistakes.
Coach note
Strong capacity story—next, spell out idempotency and observability trade-offs.
Same flow for every track—prompts and depth adapt to what you chose.
Practice tracks
Pick your bar—not a generic quiz.
Six interview shapes. One voice workflow. Skim the list, tap a mock, start talking.
- BehavioralSTAR & stories
- System designTrade-offs
- FrontendUI & perf
- Data & MLPipelines
- PM–techClarity
- InfrastructureReliability
Solo prep, real structure
Rehearse like it counts—without a study group.
Talk through answers, get rubric-style scores, and see weak topics before they cost you a round.
Pressure that feels real
Voice, pacing, follow-ups—not multiple choice that disappears on game day.
Feedback you can iterate
Reasoning and evidence called out, not a single mystery score.
Prep that stacks
Dashboards and retries so this session connects to the last one.
Microphones and screens first—not flashcards.
Voice-first
Say it out loud. Fix it faster.
Dataset for structure. Live AI when you want on-camera pressure.
Interviewer
How would you shard writes without killing read latency?
You
Hot keys first—then fan-out vs queue-backed writes…
Follow-up
Where do you accept eventual consistency—and where not?
Rubric-grounded
Scores that point to the next move.
Hybrid signals—closer to a hiring bar than one vague number.
Reasoning
8.2
Evidence
7.5
Final
8.0
Compounding prep
Each round carries forward.
History and trends so you are not restarting from zero every time.
Score trend
How it works
Three steps. No homework wall.
Set up once, run the mock, read what to fix—then repeat.
01
Configure
Role, level, topic—under a minute.
02
Run
Dataset drills or live AI voice.
03
Review
Scores + notes, then next rep.
Learn on-site
Skim a guide. Then talk it out.
Short reads on React, JavaScript, and system design—then one click into practice.
Ready when you are
Your next round deserves a rehearsal with receipts.
Create an account, run your first mock, and leave with structured feedback—not a vague “good job.” Build the habit before the calendar invite lands.