Open to opportunities

Leo Finzel

@leofinzel

I build and support healthcare, financial, and field-service applications across .NET, cloud, data, and full-stack systems.

United States

Message

At Aptive Environmental, I develop and support field-service and route-operations applications using React, TypeScript, PHP/Laravel, PostgreSQL, AWS, Redis, and RabbitMQ. I troubleshoot workflow and integration issues across UI, backend, database, caching, messaging, and scheduling layers without disrupting active operations.

Previously, I built cloud-native digital products at Coherent Solutions and secure clinical workflows at US Acute Care Solutions, including Azure-based HL7/FHIR integrations for medical-record data. Across 10 years in healthcare, financial services, and operational software, I've delivered maintainable full-stack applications, integrations, CI/CD improvements, and production support.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Aptive Environmental, LLC

Jan 2026 - Present (9 months)

Develop and support field-service and route-operations applications using React, TypeScript, PHP/Laravel, PostgreSQL, and AWS. Handle production support, troubleshooting, and CI/CD releases while maintaining reliability and maintainability.

React TypeScript PHP Laravel PostgreSQL AWS REST APIs Redis RabbitMQ CI CD Distributed Systems Caching Messaging

Senior Software Engineer

Coherent Solutions

Aug 2021 - Dec 2025 (4 years 4 months)

Built and maintained digital products using .NET, Java, Python, Node.js, React, Angular, SQL, and NoSQL technologies. Contributed to CI/CD, QA automation, and infrastructure work with Docker, Kubernetes, and Terraform.

.NET Java Python Node React Angular SQL NoSQL AWS Azure GCP Docker Kubernetes Terraform CI CD QA Automation

Software Engineer

US Acute Care Solutions

Aug 2018 - Jul 2021 (2 years 11 months)

Developed C#/.NET and Python applications for healthcare and clinical workflows, implementing Azure services and HL7/FHIR integrations. Built automation with Power Platform and RPA, and supported production and CI/CD releases.

C#.NET Python Azure Functions Azure SQL HL7 FHIR REST APIs Power Platform CI CD

Full-stack Engineer

Caliber Home Loans, Inc.

Jun 2016 - Jul 2018 (2 years 1 month)

Developed full-stack mortgage applications with C#/.NET, ASP.NET, Angular, TypeScript, SQL Server, and Entity Framework. Worked on REST/SOAP integrations, database queries, stored procedures, and CI/CD practices.