Sidney Sandefur

Highlands Ranch, Colorado

• development of new features and maintenance of the authorization platform for Visa DPS Forward. Primarily using Java and Spring Boot, processing hundreds of transactions per second for major fintechs and banks representing trillions of dollars per year in payment volume, ensuring continuous uptime and global redundancy.
• Work with business owners to translate complex business requirements into detailed software specifications.
• Expanded platform capabilities by supporting new transaction formats, expanding the platform's ability to support diverse ATM and sub-payment networks globally, enabling the onboarding of additional clients and expanding Visa's service offerings.
• Develop and integrate with both RESTful and gRPC APIs across a microservice ecosystem to provide essential services to Visa's clients.
• Deliver presentations to audiences of 100+ individuals, effectively communicating technical information and facilitating organization-wide alignment.
• Mentored, coached, and onboarded 3+ new software engineers, accelerating their integration and development into productive team members.

Highlands Ranch, Colorado

• Designed, developed, and launched an automated testing solution for a high-volume payment reporting system for DPS Forward, completly eliminating the need for manual testing.
• Enhanced the performance and functionality of the end-to-end testing automation suite by writing efficient application code and extending test coverage to support new features and systems.
• Reviewed and provided constructive feedback on new test scripts and test framework enhancements, ensuring quality and adherence to standards.
• Proactively identified, troubleshooted, and assisted in resolving software defects.
• Collaborated effectively with cross-functional and globally distributed teams to coordinate and ensure the delivery of high-quality software.