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 and verified a full legacy-code modernization for a fleet service system: fixed the service-wear calculation, handled missing readings safely, corrected the nightly report, and swept helper utilities for a hidden mileage-conversion bug. Also added the missing regression test, produced a data-driven breakdown-risk analysis from fleet history, and documented the agent review 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 the whole-number division bug and explained why it suppressed near-worn cars
- Identified and fixed the quiet helper-module mileage conversion bug that no test directly covered
- Added the missing report test and verified the repo with all 11 acceptance checks passing
- Wrote a data-backed breakdown analysis that correctly emphasizes km_since_service, avg_daily_km, and load_factor over odometer_km and age_years
- Leakage-Free Bug Diagnosis
- Directed AI Code Review
The deliverable
The work I submitted20 tasks
12 tasks · 1.9k characters · 8 written answers · 100 words
- Division Predict73 characters
- Diagnose Line130 characters
- Diagnose Why163 characters
- Scope Prompt66 characters
- Audit Findings158 characters
- Audit Why159 characters
- Acceptance Checklist219 characters
- Bob Trial Click74 characters
- Bob Ready60 characters
- Template Repo Click82 characters
- Verify Report71 characters
- Exec Pitch616 characters
- Division Predict1 word
- Diagnose Line10 words
- Diagnose Why28 words
- Scope Prompt1 word
- Audit Findings1 word
- Audit Why21 words
- Acceptance Checklist37 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.