Aaron Simpson

Software engineer, currently living in Kansas City.

Experience

Kansas State University

2016—2020

BSc in Computer Science from Kansas State University. Participated in various clubs around campus, including the game development club. Graduated in December 2020 in the midst of COVID-19 pandemic.

Cerner Corporation

2020—September 2021

Worked at Cerner Corporation as a Software Engineer prior to their acquisition by Oracle. Attended and graduated from DevAcademy program. Moved onto team working in Cerner CCL, but didn't feel like the company was a good fit for me technically or culturally.

TreviPay

September 2021—Present

Joined TreviPay as a Software Engineer and promoted to Software Engineer II while contributing to the company’s core B2B payments and invoicing platform, which processes billions in transactions annually across 30+ countries. Designed and maintained backend services for the manual charge page used by enterprise clients, and built internal billing applications for the finance & accounting team. Played a key role in the development of Universal Acceptance purchase card management, an initiative with Mastercard to extend TreviPay’s net terms and trade credit offering to a broader supplier network. Focused on full-stack development for card lifecycle management, transaction processing, and integration with TreviPay’s invoicing and settlement systems, enabling suppliers to seamlessly accept and manage B2B purchase cards. Engineered a zero-downtime PostgreSQL migration strategy to ensure uninterrupted availability of critical payment systems.

Skills