Matheus Fonseca

Actioned alerts and queues to identify and mitigate card transaction risks, conducted in-depth operational and transactional analysis with Feedzai, Grafana and Looker, and led document verification and device validation to reduce fraud exposure.

Executed transactional monitoring and investigations to detect suspicious patterns, improved fraud monitoring flows and KPIs, and contributed automation and product enhancements that mitigated financial losses.

Monitored accounts for suspicious activity, managed high-risk accounts including blocking/unblocking, and performed document and financial transaction analysis to prevent fraud and reduce chargebacks.

Provided customer support for fraud inquiries, created and managed Zendesk tickets, and supported development of fraud prevention workflows while performing document analysis and account blocking procedures.

Conducted document analysis and registration validation for credit operations, created support tickets for fraud issues, and used external data bureaus to identify fraud patterns.

Managed inventory, customer service, order and delivery processes, and issued invoices to support store operations and sales.

Supported sales through visual merchandising, market analysis and customer relationship activities to drive in-store performance.

Provided customer service, managed administrative routines, issued documents, organized files and maintained spreadsheets to support departmental operations.

Associate's degree program in Data Science at Faculdade VINCIT scheduled from July 2025 to December 2027.

Completed a Data Analytics course focused on Data Modeling/Database Storage and Administration in mid-2024.