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 a complete modernization and bug-fix pass for a legacy fleet-service repo: corrected the wear calculation, handled missing service readings safely, fixed the nightly report’s average and crash path, repaired a silent mileage-conversion bug in the helpers, and added the missing regression test. Also delivered a data-driven breakdown-risk analysis and documented the verification 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 silent km-to-miles conversion bug that no test covered, showing a real sweep beyond the obvious failures.
- Kept the service interval and warning threshold unchanged while fixing the wear calculation and missing-reading behavior.
- Added the missing fleet-report test and verified the repo with a full acceptance check before handoff.
- Produced a grounded breakdown-risk analysis that explicitly rejects odometer_km and age_years as predictors and focuses on the columns the data actually supports.
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The deliverable
The work I submitted20 tasks
12 tasks · 2.2k characters · 8 written answers · 54 words
- Division Predict70 characters
- Diagnose Line130 characters
- Diagnose Why148 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why41 characters
- Acceptance Checklist41 characters
- Bob Trial Click74 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch1.3k characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why27 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why6 words
- Acceptance Checklist7 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.