Self-directed project
AI-Assisted Code Modernization with IBM
Junior Software Engineer · Software Engineering · August 2026
Based on a public IBM case study · not affiliated with IBM
Built and verified a full legacy-service repair for KM-Waechter: fixed the wear calculation with true division, handled missing service readings safely, corrected the fleet report’s average and crash path, and preserved the original 15000 km / 80% rules. Also added the missing regression test, modernized the code style, and wrote a data-driven risk analysis that ranks cars by breakdown likelihood using the factors the dataset actually supports.
Graded against
- Fix and extend the repo with the agent35%
- Diagnose the bug20%
- Direct and audit the AI agent25%
- Explain it like an engineer20%
Passed · pass mark 60/100
What stood out6
- Correctly identified the floor-division line as the root cause of the near-worn car bug and explained why it collapsed to 0%
- Caught the agent’s unauthorized threshold change and missing proving test during audit
- Verified the fix with an acceptance checklist and documented the review process in NOTES.md
- Produced a breakdown-risk analysis that follows the labeled data instead of the obvious but wrong mileage assumption
- Leakage-Free Bug Diagnosis
- Bounded AI Prompting and Review
The deliverable
The work I submitted20 tasks
12 tasks · 2.8k characters · 8 written answers · 149 words
- Diagnose Line130 characters
- Diagnose Why211 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why427 characters
- Acceptance Checklist228 characters
- Template Repo Click82 characters
- Bob Ready61 characters
- Bob Trial Click324 characters
- Exec Pitch760 characters
- Bob Bonus343 characters
- Repo URL47 characters
- Diagnose Line10 words
- Diagnose Why34 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why67 words
- Acceptance Checklist34 words
- Template Repo Click1 word
- Bob Ready1 word
Summarised on purpose — the submitted code and writing stay private so this page cannot be reused as an answer key. The full submission sits behind the verified certificate.