Systems Engineer UST
• Serve as Subject Matter Expert (SME) for a fraud prevention application, owning its infrastructure, configuration, and ongoing maintenance end to end.
• Manage and provision the application's AWS infrastructure, working directly in the AWS console and building infrastructure as code with Terraform.
• Actively participate in technical decisions on architecture, configuration, and priorities alongside the development and infrastructure teams.
• Joined the application before its initial production launch and helped drive the infrastructure adjustments required to bring it live, then led the go-live effort, coordinating with cross-functional teams across multiple countries.
• Playing a key role in a parallel infrastructure and application upgrade built from the ground up, engineered to avoid downtime during the transition; currently in its final stages.
• Contributed to improving application response time from approximately 1.2s to about 900ms by identifying and addressing performance bottlenecks.
• Monitor production environments using Splunk and Dynatrace to detect issues early and support system availability and performance.
• Collaborate with development and QA teams to diagnose, prioritize, and resolve application issues.
• Perform log analysis and write automation scripts across Linux and Windows environments to streamline routine operational tasks.
• Participate in on-call rotation, providing after-hours incident response and support.
• Contribute to documentation and continuous improvement of internal support processes.