Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a Senior Software Engineer and Tech Lead with over a decade of experience building scalable fintech and healthcare platforms. I specialize in .NET and cloud-native microservices, delivering robust, secure systems across banking, insurance, and health care domains. I enjoy mentoring teams, driving architecture decisions, and turning legacy monoliths into resilient, auto-scaling services. My work emphasizes performance, interoperability (HL7/FHIR where relevant), CI/CD, and data-driven decision making.…I am a Senior Software Engineer and Tech Lead with over a decade of experience building scalable fintech and healthcare platforms. I specialize in .NET and cloud-native microservices, delivering robust, secure systems across banking, insurance, and health care domains. I enjoy mentoring teams, driving architecture decisions, and turning legacy monoliths into resilient, auto-scaling services. My work emphasizes performance, interoperability (HL7/FHIR where relevant), CI/CD, and data-driven decision making.

David South

Full Stack Developer, Back-End Developer, App Developer, +2





I am a Senior Software Engineer and Tech Lead with over a decade of experience building scalable fintech and healthcare platforms. I specialize in .NET and cloud-native microservices, delivering robust, secure systems across banking, insurance, and health care domains. I enjoy mentoring teams, driving architecture decisions, and turning legacy monoliths into resilient, auto-scaling services. My work emphasizes performance, interoperability (HL7/FHIR where relevant), CI/CD, and data-driven decision making.…I am a Senior Software Engineer and Tech Lead with over a decade of experience building scalable fintech and healthcare platforms. I specialize in .NET and cloud-native microservices, delivering robust, secure systems across banking, insurance, and health care domains. I enjoy mentoring teams, driving architecture decisions, and turning legacy monoliths into resilient, auto-scaling services. My work emphasizes performance, interoperability (HL7/FHIR where relevant), CI/CD, and data-driven decision making.

Available to hire

I am a Senior Software Engineer and Tech Lead with over a decade of experience building scalable fintech and healthcare platforms. I specialize in .NET and cloud-native microservices, delivering robust, secure systems across banking, insurance, and health care domains.

I enjoy mentoring teams, driving architecture decisions, and turning legacy monoliths into resilient, auto-scaling services. My work emphasizes performance, interoperability (HL7/FHIR where relevant), CI/CD, and data-driven decision making.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Tech Lead / Software Engineer at Comerica Bank

June 1, 2021 - December 1, 2025

Led modernization of core banking microservices architecture, migrating legacy systems to cloud-native services using .NET Core, React, SQL Server, AWS. Implemented OAuth 2.0 / JWT with Azure AD B2C for secure, role-based access, and built end-to-end CI/CD pipelines with Azure DevOps and Terraform. Designed API gateway and service mesh to unify data exchange across core banking platforms, improving throughput, reliability, and operational efficiency.

Senior Software Engineer at Comerica Bank

January 1, 2018 - May 1, 2021

Migrated a legacy core banking platform to a microservices architecture, modernized front-end with React/Next.js, redesigned data models, and implemented automated testing. Built scalable CI/CD pipelines and observability practices, improving deployment velocity and system resilience.

Software Engineer at American National Insurance

June 1, 2013 - December 1, 2017

Built a robust insurance management ecosystem by integrating policyholder data systems, claims management platforms, and underwriting applications via RESTful APIs. Enhanced real-time data synchronization, improved throughput by 30%, and developed customer-facing portals; implemented backend services with Java/Spring Boot and .NET integration as applicable.