Self-directed project
AI-Assisted Code Modernization with IBM
Junior Software Engineer · Software Engineering · September 2026
Based on a public IBM case study · not affiliated with IBM
Built and verified a full legacy-code modernization for KM-Waechter: fixed the service-wear calculation, handled missing readings safely, corrected the nightly report, repaired a hidden mileage-conversion bug in the helpers, and added the missing regression test. Also delivered a data-driven breakdown-risk analysis that follows the fleet history rather than the obvious but unsupported mileage assumption, with acceptance checks passing end to end.
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 test directly covered
- Kept the 15000 km interval and 80% threshold unchanged while fixing the wear logic
- Added the missing no-reading report test and verified all 11 acceptance checks passed
- Wrote a data-driven breakdown analysis that explicitly avoids the false mileage/age conclusion
- Leakage-Free Feature Engineering
- Honest Model Evaluation
The deliverable
The work I submitted20 tasks
12 tasks · 2.4k characters · 8 written answers · 82 words
- Division Predict70 characters
- Diagnose Line130 characters
- Diagnose Why163 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why143 characters
- Acceptance Checklist176 characters
- Bob Trial Click74 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch1.2k characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why26 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why19 words
- Acceptance Checklist23 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.