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-code modernization for a fleet service system: fixed the wear calculation, handled missing service readings safely, corrected the nightly report’s average and crash path, repaired a hidden mileage-conversion bug in shared helpers, and added a data-driven breakdown-risk analysis. The work was validated with an acceptance script and documented in NOTES.md with clear review notes on what the AI agent missed.
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
- Caught and fixed the quiet fleet_utils.km_to_miles conversion bug that no unit test covered
- Added a missing-reporting path so cars with no last-service reading stay visible instead of crashing or disappearing
- Built a breakdown-risk analysis that explicitly checks the data and rejects the misleading mileage/age assumption
- Wrote NOTES.md with concrete verification steps, including running verify.py and checking the unchanged service rules
- Leakage-Free Feature Engineering
- Honest Model Evaluation
The deliverable
The work I submitted17 tasks
9 tasks · 1.7k characters · 8 written answers · 212 words
- Division Predict70 characters
- Diagnose Line130 characters
- Diagnose Why59 characters
- Scope Prompt66 characters
- Bob Trial Click74 characters
- Template Repo Click82 characters
- Exec Pitch481 characters
- Bob Bonus642 characters
- Repo URL48 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why9 words
- Scope Prompt1 word
- Bob Trial Click1 word
- Template Repo Click1 word
- Exec Pitch67 words
- Bob Bonus122 words
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.