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I am a Senior Software Engineer with 10+ years of experience designing, modernizing, and scaling enterprise software platforms across fintech, healthcare, and consulting. I specialize in building secure distributed systems using C#, ASP.NET Core, Azure cloud infrastructure, microservices, and event-driven architectures. I’ve led modernization efforts to cloud-native solutions employing Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, and API-first engineering. I’ve guided teams through modernization initiatives, mentored engineers, and delivered business-critical applications within Agile/Scrum and SAFe delivery models. I thrive collaborating with architects, product owners, and compliance stakeholders to align platform modernization with evolving business requirements, ensure security and regulatory readiness, and improve system reliability and performance.…I am a Senior Software Engineer with 10+ years of experience designing, modernizing, and scaling enterprise software platforms across fintech, healthcare, and consulting. I specialize in building secure distributed systems using C#, ASP.NET Core, Azure cloud infrastructure, microservices, and event-driven architectures. I’ve led modernization efforts to cloud-native solutions employing Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, and API-first engineering. I’ve guided teams through modernization initiatives, mentored engineers, and delivered business-critical applications within Agile/Scrum and SAFe delivery models. I thrive collaborating with architects, product owners, and compliance stakeholders to align platform modernization with evolving business requirements, ensure security and regulatory readiness, and improve system reliability and performance.

Matthew Ballew

Web Developer, Front-End Developer, Back-End Developer, +3

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I am a Senior Software Engineer with 10+ years of experience designing, modernizing, and scaling enterprise software platforms across fintech, healthcare, and consulting. I specialize in building secure distributed systems using C#, ASP.NET Core, Azure cloud infrastructure, microservices, and event-driven architectures. I’ve led modernization efforts to cloud-native solutions employing Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, and API-first engineering. I’ve guided teams through modernization initiatives, mentored engineers, and delivered business-critical applications within Agile/Scrum and SAFe delivery models. I thrive collaborating with architects, product owners, and compliance stakeholders to align platform modernization with evolving business requirements, ensure security and regulatory readiness, and improve system reliability and performance.…I am a Senior Software Engineer with 10+ years of experience designing, modernizing, and scaling enterprise software platforms across fintech, healthcare, and consulting. I specialize in building secure distributed systems using C#, ASP.NET Core, Azure cloud infrastructure, microservices, and event-driven architectures. I’ve led modernization efforts to cloud-native solutions employing Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, and API-first engineering. I’ve guided teams through modernization initiatives, mentored engineers, and delivered business-critical applications within Agile/Scrum and SAFe delivery models. I thrive collaborating with architects, product owners, and compliance stakeholders to align platform modernization with evolving business requirements, ensure security and regulatory readiness, and improve system reliability and performance.

Available to hire

I am a Senior Software Engineer with 10+ years of experience designing, modernizing, and scaling enterprise software platforms across fintech, healthcare, and consulting. I specialize in building secure distributed systems using C#, ASP.NET Core, Azure cloud infrastructure, microservices, and event-driven architectures. I’ve led modernization efforts to cloud-native solutions employing Clean Architecture, Domain-Driven Design, CQRS, SOLID principles, and API-first engineering. I’ve guided teams through modernization initiatives, mentored engineers, and delivered business-critical applications within Agile/Scrum and SAFe delivery models.

I thrive collaborating with architects, product owners, and compliance stakeholders to align platform modernization with evolving business requirements, ensure security and regulatory readiness, and improve system reliability and performance.

Skills

Experience Level

Expert

Expert

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Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer | Technical Lead at Apex Fintech Solutions

September 1, 2023 - May 1, 2026

Led modernization of enterprise payment and settlement systems into cloud-native distributed microservices architecture supporting real-time financial processing and compliance-driven transaction operations. Migrated legacy settlement services to .NET 8 microservices leveraging Clean Architecture, DDD, CQRS and event-driven design. Built enterprise transaction monitoring dashboards with Angular 16 and RxJS; implemented distributed transaction orchestration with ASP.NET Core Web APIs and Azure Service Bus pub/sub; designed asynchronous payment workflows with background services, SQL Server persistence, and idempotency validation to reduce duplicate transactions. Developed RESTful and GraphQL integrations with partner onboarding, secured OAuth2/OpenID Connect authentication with JWT and RBAC; containerized deployments with Docker and Kubernetes/AKS; established centralized observability (Azure Application Insights, Grafana) and optimized high-concurrency SQL workloads. Created Python-bas

Senior Software Engineer at Texas Children's Hospital

March 1, 2018 - August 1, 2023

Modernized legacy ASP.NET WebForms/MVC monolithic healthcare applications into modular ASP.NET Core service-oriented architecture; built clinician dashboards using React; implemented interoperability using FHIR/HL7; developed backend services with AWS SNS/SQS for patient notifications; designed hybrid enterprise integration for SOAP and REST; migrated critical services to AWS EC2/Lambda/S3; built HIPAA-compliant audit logging and tracing; optimized SQL Server analytics; implemented blue-green deployment for healthcare APIs; automated document processing and patient intake with Python/AWS; collaborated with stakeholders in Agile environments; mentored engineers.

Software Engineer at Avanade

August 1, 2015 - February 1, 2018

Delivered enterprise applications across finance, logistics, and operations; built SOAP-based enterprise integration; front-end modules with AngularJS; applied layered architecture, Repository and Unit of Work patterns; optimized SQL Server procedures; supported modernization toward REST-based integration and multi-environment releases; collaborated with clients in Agile teams to deliver scalable, production-grade solutions.

Senior Software Engineer / Technical Lead at Apex Fintech Solutions

September 1, 2023 - May 1, 2026

Led modernization of enterprise payment and settlement systems into a cloud-native distributed microservices architecture to support real-time financial processing and compliant transaction operations. Migrated legacy settlement services to .NET 8 microservices using Clean Architecture, DDD, CQRS, and event-driven patterns to scale payment workloads over $10M monthly. Built dashboards with Angular 16 and RxJS to improve operational visibility and reduce manual investigations. Designed distributed transaction orchestration with ASP.NET Core Web APIs and Azure Service Bus pub/sub, cutting reconciliation delays and boosting settlement throughput by 35%. Implemented asynchronous payment workflows with background services, SQL Server persistence, and idempotency validation to minimize duplicates. Created RESTful APIs and GraphQL gateway layers with Swagger/OpenAPI to accelerate onboarding of partners by ~32%. Enforced secure authentication with OAuth2, OpenID Connect, Microsoft Entra ID, JW