At Koin Payments, I operate SQL Server high-availability and disaster-recovery systems for payment-processing workloads. I also tuned a core financial calculation from approximately 7 hours to 45–90 minutes.
At Koin Payments, I manage database infrastructure across AWS RDS and EC2, using tools including Terraform, CloudWatch, and RDS Proxy. I also administer MySQL and MariaDB environments and led Aurora MySQL/MariaDB-to-MySQL 8.x migrations.
Previously, at epay, a Euronet Worldwide Company, I managed SQL Server production clusters for prepaid payment platforms. I designed and maintained Always On Availability Groups and Transactional Replication, and led database migrations and schema changes across development and production environments.
At GBM as a Service, I administered SQL Server environments for banking, retail, and telecommunications clients, working on high availability, disaster recovery, and performance tuning. I also supported other database platforms, authored root-cause analysis reports, and mentored junior DBAs.
