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 KM-Waechter: corrected the wear calculation, handled missing service readings safely, fixed the nightly report’s average and crash path, and repaired the hidden mileage-conversion helper bug. Also added the missing regression test, wrote a data-driven breakdown-risk analysis from fleet_history.csv, and validated the result with the project’s acceptance script.
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 integer-division wear bug and correctly predicted the near-worn car should read about 99%, not 0
- Swept beyond the obvious failures and fixed the quiet km-to-miles conversion bug that no test directly exposed
- Added the missing report test and verified the full acceptance script passed 11/11 checks
- Produced a breakdown-risk analysis that uses km_since_service, avg_daily_km, and load_factor while explicitly rejecting the misleading mileage/age assumption
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The deliverable
The work I submitted20 tasks
12 tasks · 3.2k characters · 8 written answers · 71 words
- Division Predict70 characters
- Diagnose Line130 characters
- Diagnose Why121 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why113 characters
- Acceptance Checklist73 characters
- Bob Trial Click198 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch2.1k characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why22 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why20 words
- Acceptance Checklist15 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.