Rafael Antonio Perez Marin

Programmer (since age 12) and Data Analysis and SQL Specialist with 17+ years of experience in the design and implementation of automated analytics solutions that transform manual processes into continuous monitoring systems. Expert in developing complex ETL architectures, optimizing SQL queries, and creating data pipelines that process millions of transactions. Experience in reducing analysis time by 98% (from 6 hours to 15 minutes), freeing up over 1,200 hours annually through automation. Developer of an analytical add-in for Excel (over 45,000 lines of code in C#), continuous auditing systems, and data analytics in Access and SQL Server, with an ability to detect over $1.7 million in financial irregularities. Certified CISA with expertise in C# .NET, Delphi, VBA, SQL Server, Oracle, Firebird, SAP S/4HANA, ACL Analytics, and statistical anomaly detection techniques.