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 an end-to-end modernization of a legacy fleet-service repo: fixed the wear calculation, handled missing service readings safely, corrected the nightly report, and swept helper modules to catch a silent mileage-conversion bug. Also added the missing regression test, kept the business rules unchanged, 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
- Caught the hidden fleet_utils.km_to_miles inversion that no test covered and fixed the 2.6× distance inflation
- Preserved the 15000 km interval and 80% threshold exactly while fixing the wear logic
- Added a regression test for the missing-reading crash and verified the full acceptance script passed
- Produced a data-driven breakdown analysis that correctly treats km_since_service, avg_daily_km, and load_factor as the useful signals
- Leakage-Free Feature Engineering
- Honest Model Evaluation
The deliverable
The work I submitted20 tasks
12 tasks · 2.5k characters · 8 written answers · 97 words
- Division Predict73 characters
- Diagnose Line130 characters
- Diagnose Why143 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why187 characters
- Acceptance Checklist241 characters
- Bob Trial Click74 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch1.0k characters
- Bob Bonus251 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why22 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why27 words
- Acceptance Checklist34 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.