The crossword answer to “worker who tracks transactions” is BOOKKEEPER.

This clue most recently appeared in the February 18, 2026 LA Times crossword, where the 10-letter solution given is BOOKKEEPER.

A bookkeeper is the worker who records and tracks financial transactions such as sales, purchases, receipts, and payments for a business.

If you share the crossing letters or grid size, I can confirm it fits your specific puzzle as well. Information gathered from public forums or data available on the internet and portrayed here.