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 a full legacy-code modernization pass for a fleet service system: corrected the wear calculation, handled missing service readings safely, fixed the nightly report’s average and crash path, and repaired a hidden mileage-conversion bug in the helpers. Also added the missing regression test, wrote a data-driven breakdown-risk analysis that follows the fleet history rather than the mileage assumption, and documented the verification process in clear NOTES.md.
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
- Identified and fixed the floor-division wear bug so a nearly-worn car now evaluates at about 99.3% instead of 0%
- Caught the quiet helper-module mileage conversion error and corrected km_to_miles to use the proper 0.62137 factor
- Added the missing no-reading fleet report test and documented the verification process in NOTES.md
- Built an analysis that explicitly rejects the misleading mileage/age assumption and instead uses km_since_service, avg_daily_km, and load_factor
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The work I submitted18 tasks
10 tasks · 1.5k characters · 8 written answers · 123 words
- Division Predict72 characters
- Diagnose Line130 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why84 characters
- Acceptance Checklist90 characters
- Verify Report378 characters
- Exec Pitch350 characters
- Bob Bonus134 characters
- Repo URL76 characters
- Division Predict1 word
- Diagnose Line10 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why12 words
- Acceptance Checklist11 words
- Verify Report42 words
- Exec Pitch45 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.