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: fixed the wear calculation so nearly-worn cars are flagged correctly, handled missing service history without crashing the nightly report, corrected the fleet average, and preserved the 15,000 km / 80% business rules. Also added the missing regression test, modernized the code style, and wrote a data-driven breakdown-risk analysis that follows the fleet history rather than the misleading mileage assumption.
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 bug as the cause of the 0% wear reading
- Caught the agent's unsafe instinct to default a missing service reading to 0 and explained why that would falsely flag cars
- Wrote a concrete NOTES.md describing exactly what was checked in verify.py and why those checks mattered
- Produced an analyze.py that explicitly excludes odometer_km and age_years after checking the group separation
- Leakage-Free Bug Diagnosis
- Verified AI Agent Auditing
The deliverable
The work I submitted19 tasks
11 tasks · 2.2k characters · 8 written answers · 67 words
- Bob Trial Click74 characters
- Diagnose Line130 characters
- Diagnose Why56 characters
- Audit Findings158 characters
- Audit Why171 characters
- Acceptance Checklist79 characters
- Template Repo Click82 characters
- Bob Ready60 characters
- Exec Pitch927 characters
- Bob Bonus428 characters
- Repo URL52 characters
- Bob Trial Click1 word
- Diagnose Line10 words
- Diagnose Why9 words
- Audit Findings1 word
- Audit Why30 words
- Acceptance Checklist14 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.