Cristian User

Validated data integrity across more than 15 integrated banking systems using Postman and SQL, and applied AI-assisted testing with Devin and Windsurf, increasing regression coverage by 25% and reducing release time by 20%.

Executed 5 to 7 IT audits per year under BCRA regulations and ISACA methodologies. Evaluated logical and physical security controls, electronic banking, AML prevention, databases, interfaces, and third-party applications using ACL Analytics.

Managed incidents and requirements from internal bank areas using Service Desk, Service Manager, and Fix-IQ. Controlled inventory and approved software, and prepared performance reports for various management areas using SQL.

Administered identities and access provisioning with RACF (mainframe) for American Express users, handling user creations, deletions, and modifications of profiles and permissions. Supported four regions (Japan, Latin America, Europe, and the US) working 100% in English in a global team.

Managed and controlled access to about 50 applications for 100 to 500 users, applying least privilege, RBAC, authentication, and authorization. Incorporated privileged accounts into CyberArk (PAM) and supported privileged access operations with Active Directory.

Completed Tester QA Experto certification in 2026.

Completed Seguridad Informática certification in 2018.

Licenciatura en Sistemas from Universidad de Buenos Aires, completed in 2010.