Mac Ahmed

Led technical design and implementation of machine image distribution architecture for 1,300+ monthly AMI builds, reducing release cycle from 12-14 days to 1-2 days across 32 AWS regions. Optimized EC2 API usage by reducing calls from 17,000 to 3 per release through query restructuring and caching, cutting discovery time from 3 hours to 3 minutes. Served as technical feature lead for security monitoring integration across RDS SQL Server fleet serving millions of customers, collaborating with cross-functional teams on VPC PrivateLink infrastructure. Redesigned release process to support multiple OS versions simultaneously, achieving zero version-related incidents since implementation. Reduced EC2 startup time for all RDS SQL Server instances by 35% through implementation of EC2 Fast Launch. Mentored team members on system architecture and best practices while maintaining on-call responsibilities, responding to 1,050+ pages and resolving 426 customer tickets.

Scaled Java Spring Boot API by 50% to accommodate migrations of nearly 200,000 customers, enabling removal of old products in the system. Designed and implemented a custom communication protocol using Java Sockets to communicate with legacy system. Engineered an algorithm to separate Australian post addresses into their constituent parts, filtering out incorrect user-entered data and standardizing address info. Awarded Outstanding Achiever Award for taking ownership during resourcing limitations and making significant contributions through test automation and system improvements.

Built, shipped, and maintained Java Spring Boot API handling loads up to 60K transactions, reducing legacy support costs. Implemented automatic retries for Java Spring Boot API using Failsafe to reduce errors against unreliable legacy systems. Reworked error handling to ensure 95% of error codes are mapped to appropriate HTTP codes and throw specific errors instead of HTTP 500 or other generic errors. Improved billing system efficiency by 20% through development of new features and ongoing maintenance of an existing Perl billing system. Worked collaboratively with cross-functional teams to ensure timely delivery.