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-maintenance service: fixed the wear calculation, handled missing service readings safely, corrected the nightly report’s average and crash path, and found a hidden mileage-conversion bug in shared helpers. Also added the missing regression test, wrote a data-driven breakdown-risk analysis from labeled fleet history, and documented the agent review process in 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
- Caught and fixed the quiet fleet_utils.km_to_miles inversion that no test directly covered
- Kept the 15,000 km interval and 80% threshold unchanged in both code and settings.cfg
- Added the missing report test for a car with no reading and verified the full acceptance suite
- Used the labeled fleet_history.csv to prioritize km_since_service, avg_daily_km, and load_factor while excluding odometer_km and age_years
- Leakage-Free Feature Engineering
- Honest Model Evaluation
The deliverable
The work I submitted20 tasks
12 tasks · 1.8k characters · 8 written answers · 91 words
- Division Predict73 characters
- Diagnose Line130 characters
- Diagnose Why230 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why109 characters
- Acceptance Checklist192 characters
- Bob Trial Click136 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report70 characters
- Exec Pitch521 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why35 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why14 words
- Acceptance Checklist28 words
- Bob Trial Click1 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.