Hadi sayyadian

I am a Senior Software Developer with 15+ years of programming experience, specializing in backend development, .NET, ASP.NET Core, Web APIs, software architecture, and automation.

I build reliable, scalable, and maintainable software solutions for businesses, including REST APIs, backend systems, database-driven applications, third-party integrations, and custom automation tools.

My core expertise includes:

* C# / .NET / ASP.NET Core
* RESTful APIs & Web API
* Backend development
* SQL & database design
* Clean Architecture, DDD & SOLID
* Software architecture & design patterns
* Third-party API integrations
* Python & automation
* AI-powered applications and workflows
* Performance optimization and troubleshooting

I focus on understanding the business requirements first and then delivering clean, practical, and production-ready solutions.

Whether you need a new backend system, API integration, business automation, an existing application improved, or an AI-powered solution, I can help turn your idea into a reliable working product.