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 a fleet service tool: fixed the wear-calculation bug, handled missing service readings safely, corrected the nightly report, and swept a hidden mileage-conversion defect in the helper layer. Also added the missing regression test, produced a data-driven breakdown-risk analysis, and documented the review process in NOTES.md after independently checking the AI agent’s output.
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 inversion that no test directly covered
- Kept the 15000 km interval and 80% threshold unchanged while fixing the logic around them
- Added the missing no-reading report test and verified the repo with the acceptance script
- Wrote an analysis that explicitly rejects the misleading odometer/age assumption and focuses on service proximity and driving intensity
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The deliverable
The work I submitted20 tasks
12 tasks · 1.9k characters · 8 written answers · 83 words
- Division Predict73 characters
- Diagnose Line130 characters
- Diagnose Why156 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why168 characters
- Acceptance Checklist163 characters
- Bob Trial Click136 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch623 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why25 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why22 words
- Acceptance Checklist22 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.