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Robert Leeson

@robertleeson

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Senior .NET engineer specializing in cloud-native, API-driven distributed systems.

United States

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What I'm looking for

I seek senior engineering roles focused on cloud-native .NET systems, scalable APIs, microservices, and practical AI integrations with collaborative teams and strong engineering practices.

I am a Senior/Principal software engineer with 10+ years designing, modernizing, and scaling .NET-based backend and full-stack systems for enterprise and SaaS environments. I specialize in cloud-native architectures, event-driven microservices, RESTful APIs, and pragmatic AI/LLM integrations (ChatGPT API) to enrich and extract insights from large datasets.

I have led system modernization efforts (migrations from .NET Framework to .NET 6–8), built automated release-verification tooling, implemented performant data integrations with SQL Server, MongoDB and IBM DB2, and established testing and engineering standards while mentoring engineers. I focus on improving scalability, reliability, and long-term maintainability through sound architecture, automation, and cross-functional collaboration.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Cirrus Insight Inc

Jan 2022 - Jan 2026 (4 years)

Owned design and implementation of automated release-verification and event-driven microservices, modernized .NET services from 4.8 to .NET 8, and improved AI/LLM integrations to enrich and summarize data, reducing manual release validation time by 2+ hours weekly and improving deployment reliability across 50 repositories.

C .NET 8+Azure Service Bus Azure Functions MongoDB RESTful APIs Microservices CI CD

Senior Full-Stack Developer

ArcBest Technologies

Aug 2008 - Jan 2022 (13 years 5 months)

Delivered and modernized full-stack .NET solutions (Windows Forms, ASP.NET Web API, WCF) for enterprise logistics, refactoring legacy systems to reduce technical debt and supporting IBM DB2 and SQL Server-backed applications across remote teams.

C Web APIs WCF Vue.Js IBM DB2 SQL Server Data Modeling Unit Testing

Database Manager/Developer

Support Systems Associates Inc

Oct 2005 - Aug 2008 (2 years 10 months)

Consolidated MS Access databases into a multi-user system and developed a C# ASP.NET Web Forms application backed by SQL Server, streamlining inventory and equipment tracking across multiple sites and enabling standardized reporting.

C ASP.NET SQL Server MS Access VBA Database Design Reporting Data Migration