You are a software engineer supporting finance systems at a large insurer, and your manager asks which finance concepts matter most in your day-to-day work. A quarterly close issue exposed mismatches between policy administration data, claims feeds, and the general ledger, so finance wants engineering to focus on the metrics and controls that most directly affect reporting accuracy and decision-making. You are expected to answer from a practical systems perspective rather than reciting textbook definitions.
| Metric | Current Quarter |
|---|---|
| Written premium | $1,250,000,000 |
| Earned premium | $1,180,000,000 |
| Incurred losses | $815,000,000 |
| Underwriting expense | $295,000,000 |
| Reinsurance recoverables | $72,000,000 |
| Accounts receivable aging over 90 days | $41,000,000 |
| Close adjustments posted after day 5 | $18,000,000 |
Which finance concepts and metrics would you say are most relevant to your work, and how would you use these numbers to explain what engineering should monitor most closely to reduce reporting risk and improve finance operations?