Mariah Ann Jefin completed AI-Assisted Code Modernization with IBM

Built and verified a full legacy-code modernization for a fleet service tool: fixed the wear calculation, handled missing service readings safely, repaired the nightly report, corrected a hidden mileage-conversion bug, and added the missing regression test. Also delivered a data-driven breakdown-risk analysis that follows the fleet history data rather than the obvious but misleading mileage assumption, with acceptance checks and written review notes to prove the work.

• Leakage-Free Feature Engineering
• Honest Model Evaluation
• AI Agent Prompt Scoping
• Acceptance-Driven Verification