Open to opportunities

Matthew Ballew

@matthewballew

Message

I modernize enterprise payment and healthcare platforms into secure, scalable cloud-native distributed systems.

United States

Message

What I'm looking for

I'm looking to lead and build secure cloud-native platforms, modernize enterprise systems, and mentor engineers while solving high-impact fintech or healthcare challenges.

I've led payment and settlement modernization at Apex Fintech Solutions, converting legacy services into .NET 8 microservices that support real-time, compliance-driven transaction operations exceeding $10M in monthly volume.

I build secure distributed systems with C#, ASP.NET Core, Azure, event-driven messaging, and SQL Server. My work has improved settlement throughput by 35%, API performance by more than 45%, and production troubleshooting time by over 40%.

Previously at Texas Children's Hospital, I helped modernize legacy healthcare applications into modular cloud-hosted platforms, built FHIR and HL7 interoperability services, and improved patient workflow visibility through React dashboards. I also supported secure AWS-based healthcare services, audit monitoring, and HIPAA reporting needs.

Across fintech, healthcare, and consulting engagements at Avanade, I've paired hands-on architecture and delivery with mentoring engineers, improving engineering standards, API design, and production support practices.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer | Technical Lead

Apex Fintech Solutions

Sep 2023 - May 2026 (2 years 8 months)

Led modernization of enterprise payment and settlement systems into cloud-native distributed microservices architecture supporting real-time financial processing and compliance-driven transaction operations.

Senior Software Engineer

Texas Children's Hospital

Mar 2018 - Aug 2023 (5 years 5 months)

Modernized enterprise healthcare systems from legacy on-prem applications into modular cloud-hosted platforms supporting interoperability, patient engagement, and secure healthcare operations.

ASP.NET Core React SOLID Principles Repository Pattern Unit Of Work FHIR HL7 Adobe Target SOAP AWS Lambda SQL Server Python Blue Green Deployment Agile Scrum

Software Engineer

Avanade

Aug 2015 - Feb 2018 (2 years 6 months)

Delivered enterprise business applications and workflow automation systems for client engagements across operations, logistics, and internal business management domains.