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Andrew Pedersen

@andrewpedersen

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Senior software engineer specializing in scalable C#/.NET backends, distributed systems, and AI/LLM automation.

United States

Message

What I'm looking for

I’m looking for a Senior/Backend role building scalable C#/.NET cloud systems, integrating AI/LLM automation, improving reliability and performance, and mentoring engineers through clear API and distributed-systems engineering.

I’m a Senior Software Engineer with 12+ years of experience designing and building scalable backend systems using C# and .NET technologies. I focus on distributed systems, cloud-native architectures, and high-performance APIs across financial and enterprise platforms.

At the South Dakota Bureau of Information and Telecommunications, I built a distributed financial transaction platform, strengthening data consistency, concurrency, and high-throughput processing through idempotent APIs and transaction-safe workflows. I improved API performance with ASP.NET Core Web API and Entity Framework Core by redesigning data access patterns, optimizing LINQ queries, and introducing pagination for large datasets.

I also integrate AI/LLM-powered automation into backend services—building Python microservices using OpenAI APIs for document processing with validation layers and fallback logic. I’ve delivered event-driven architectures with Azure Service Bus, improved reliability with secure OAuth2/JWT/Azure AD authentication flows, enhanced performance using Redis and caching strategies, and mentored engineers through code reviews and troubleshooting.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Information and Telecommunications, South Dakota Bureau of

May 2018 - Present (8 years 1 month)

Designed and built a distributed financial transaction platform using C#/.NET Core, ASP.NET Core, and SQL Server, improving reliability through idempotent APIs and transaction-safe workflows. Integrated OpenAI-powered document processing pipelines, implemented event-driven services with Azure Service Bus, and strengthened security with OAuth2/JWT and Azure AD.

C#ASP.NET Core SQL Server Azure Service Bus Redis Distributed Systems Event Driven Architecture OAUTH2 OpenAI API xUnit

Software Engineer

Infosys

Aug 2013 - May 2018 (4 years 9 months)

Developed a large-scale data processing platform using C#/.NET Framework and Web API, and integrated Python ML models into backend services using standardized API wrappers. Optimized SQL Server reporting queries with indexing and stored procedure improvements, implemented background processing with Hangfire for reliability, and enhanced observability with Serilog.

C#.NET Framework Web APIs Pandas SQL Server Hangfire Stored Procedures Serilog Data Modeling API Integration

Software Developer Intern

Capital Card Services

Mar 2013 - Aug 2013 (5 months)

Built dynamic, responsive UI components with TypeScript, AngularJS, HTML, and CSS, and implemented frontend features consuming REST APIs with improved state handling and error feedback. Developed Node.js/Express backend services for CRUD operations, designed MongoDB data structures, and wrote API tests using Mocha and Chai.