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 wear calculation, handled missing service readings safely, corrected the nightly report’s average and crash path, repaired the hidden km-to-miles helper bug, and added the missing regression test. Also produced a data-driven breakdown-risk analysis that prioritizes recent usage and load over total mileage, with acceptance checks and notes documenting what was reviewed and why.
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 km-to-miles helper bug that no test directly covered
- Added the missing no-reading report test and verified all 11 acceptance checks passed
- Kept the 15000 km interval and 80% threshold unchanged while modernizing the code style
- Wrote a breakdown-risk analysis that explicitly rejects the misleading odometer/age assumption
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The deliverable
The work I submitted20 tasks
12 tasks · 2.7k characters · 8 written answers · 97 words
- Division Predict70 characters
- Diagnose Line130 characters
- Diagnose Why110 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why288 characters
- Acceptance Checklist106 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch1.3k characters
- Bob Bonus353 characters
- Repo URL44 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why17 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why50 words
- Acceptance Checklist16 words
- Template Repo 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.