Business Analyst

Description
We are looking for an experienced Senior Fraud Analyst focused on transaction monitoring to join a startup financial service company located in San Francisco, California. This 3-month contract role has a possibility of becoming permanent. The main focuses include real‑time authorization decisions, fraud rule strategy, and performance optimization across fraud losses and false positives. The ideal candidate brings deep experience from an issuing bank, BIN sponsor, or program manager environment.


Responsibilities:

+ Perform real‑time authorization decisioning and queue review, approving or declining flagged transactions

+ Build, tune, and maintain fraud rules, including velocity rules, spend pattern logic, and merchant category (MCC) restrictions

+ Analyze transaction data to identify emerging fraud trends and design new detection strategies

+ Balance fraud loss prevention with false‑positive management to meet approval‑r...