Practice → evidence → application
Practice the work. Carry the proof into hiring.
Debug services, review code, change repositories, design systems, and solve focused problems in a real workspace. Keep the work private, then share selected evidence with an application.
Repository debugging · attempt 04Checkpoint saved
settle.ts+8 −3
42 const receipt = await ledger.claim({
43 settlementId,
44 idempotencyKey,
45 });
46 if (receipt.replayed) return receipt.result;
47 return settleAuthorized(receipt);Focused checks✓ retry preserves one settlement✓ duplicate webhook is idempotent1 integration check unavailable · retry when service returns
Evidence privateAI assistance: disclosed Resume from checkpoint
Five real work modes
Choose the judgment you want to sharpen.
01Debugging
Repair a failing service
Diagnosis + patch + focused checks02Code reviewReview a proposed change
Risk findings + review rationale03Repository workChange a real codebase
Diff + verification + explanation04System designDesign under constraints
Architecture + tradeoff record05Data structuresSolve focused problems
Implementation + complexity reasoningThe work sequence
Practice the same way good engineering happens.
No score spectacle. The useful artifact is the work, the checks, the reasoning, and the recovery path.
- 01Understand the brief
- 02Inspect the real system
- 03Change the smallest correct owner
- 04Verify focused checks
- 05Explain the decision
- 06Retain evidence privately
Candidate control
Evidence moves only when you move it.
Completed attemptVerified work + provenance
Private PortfolioYou decide what to retain
One application grantExact claim, exact hiring process
Employer packetOnly permitted evidence
Future accessRevocable by the candidate
Real recovery states
A workbench is only credible when failure is designed too.
- Failed checkKeep the exact failure and retry after a material change.
- Interrupted attemptResume from the durable checkpoint instead of replaying completed work.
- Tool unavailableShow the blocked dependency and keep independent work usable.
- Private / revokedEmployer access follows the current evidence grant, not a stale copy.