Engineering,
proven.

Practise coding, fix broken servers, build with or without AI, and explain your work to an AI that asks why. Every step becomes proof that teams can hire on, affordably.

Scroll to open the bloom
The loop

Six petals.
Everything, in one place.

Practice, real systems, AI-era projects, an interviewer that checks you understand, proof, and hiring — usually spread across five different sites. Here they're one loop: four petals for learners, two for hiring teams, and every step is on the record. That's the karma.

01 — Solve

Coding problems,
checked for real.

DSA, code reading, Git, SQL, Linux. Short problems that run against hidden tests, with explanations once you pass.

Try it →
TASK · EASYNeeds another try
Find the first repeated request ID
function firstRepeat(ids) {
const seen = new Set();
for (const id of ids) {
if (seen.has(id)) return id;
}
return null;
}
One check is failing.
✓returns the first duplicate
✓returns null when every ID is unique
✓handles empty input
✕finds repeats that aren't adjacent
02 — Fix

Broken servers.
Real terminals.

Each lab boots an isolated Linux machine with a real fault. Find it, fix it, and let the checks confirm it. Nothing is simulated.

Try it →
web · exited
$ docker compose ps
NAME STATUS
web Exited (0)
$
03 — Build

Projects,
with AI or without.

Real tickets in a real repo, in VS Code. Choose AI off, authored hints, or a full AI helper. The mode is locked in and shown on your result, because using AI well is now part of the job.

Try it →
Assistance
Why can't anything outside the container reach the service?
The server binds to loopback only. Bind to all interfaces:
server/config.envsuggested change
- HOST=127.0.0.1
+ HOST=0.0.0.0
04 — Prove

Proof,
not a certificate.

After each project an AI interviewer asks about your own work, and your answers join one page: problems solved, servers fixed, projects built, how you explained them, and which AI mode you used. Private until you share it.

Try it →
BACKEND ENGINEER PATHVerified pass
Service reachability
Practice tasks✓ Passed
Lab · real machine✓ Passed
Project · VS Code✓ Passed
Explained to AI interviewer✓ Answered
AssistanceAI helper on
Share this proof
Private. Only you can see this.
05 — Assess · for hiring teams

Affordable hiring,
your way.

Build an assessment from the same pieces, set the rules, and send it out. Watch what candidates actually did, step by step. A person on your team makes the call. Priced so teams can test everyone, not just the shortlist.

Try it →
NEW ASSESSMENTAffordable per candidate
What candidates do
AI for candidates
06 — Interview · for hiring teams

AI interviews
that read the work.

An AI interviewer asks each candidate about their own submission, the way a sharp senior engineer would. Replay every step they took, then a person on your team decides. Written today, live voice next.

Try it →
AI interviewer
docker compose pslogs webhint 1compose.yamlverify · pass
You changed the compose command. Why did the old one exit with code 0 instead of an error?
Because echo succeeded and then the process ended. Compose saw a clean exit, not a crash.
Your decision

Stop claiming.
Start proving.

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