At American Express, I evaluated high-volume financial transactions for potential fraud and credit risk, applying authorization policies and regulatory standards. I also monitored higher-risk accounts and identified irregular patterns.
I managed critical operational cases end to end and supported merchants with transaction validation. My work covered operations across the U.S., Mexico, Central America, South America, and Europe.
In my ongoing independent activity in medical billing administration, I manage documentation, claims workflows, and billing submissions. At the Ministry of Public Works (Argentina), I reviewed project documentation and audited municipal and provincial financial reporting.
