Shannon M.

Need an experienced developer to improve an existing application, solve a difficult bug, or bring a new product to life? I bring over 20 years of software engineering experience, deep expertise in C# and .NET, and extensive hands-on experience with AI tools including Claude Code, Cursor, and OpenAI Codex. As a Top Rated Plus freelancer with 100% Job Success and more than 11,000 hours on Upwork, I’ve helped clients build and maintain software across real estate, eCommerce, mortgage, point-of-sale, and other business domains. I can help with: • Full-stack web applications using C#, ASP.NET Core, MVC, Entity Framework, and JavaScript • Maintaining, debugging, and modernizing existing .NET applications • Backend services, Web APIs, and database-driven applications • Database development with PostgreSQL and Microsoft SQL Server • Containerized development workflows using Docker • AI-assisted software development using Claude Code, ChatGPT, and OpenAI Codex My experience spans both frontend and backend development, along with source control, Azure DevOps, and AWS. I combine established engineering experience with modern AI tools to tackle complex development work. I start by understanding your business goals, existing system, and priorities so we can agree on a practical approach. Whether you need ongoing development support or help with a specific technical challenge, send me a message describing what you’re building and where you need help.