Mateen S.

I’m a senior .NET full-stack developer and architect with over 15+ years of experience building secure, scalable, and high-performing digital platforms. My core expertise is in enterprise CMS and DXP solutions, with deep hands-on experience in Sitecore, Sitefinity, Umbraco and Optimizely. I help companies modernize and scale their digital ecosystems by combining strong architecture, clean engineering practices, and AI-assisted development - always guided by human judgment and production-ready standards. → CMS & DXP Specialization Extensive experience with Sitecore (v8–10+), Sitefinity (v4.1–15+), and Umbraco across MVC, headless, and hybrid architectures. My focus is on performance, maintainability, and long-term scalability. → Architecture & Best Practices Strong background in Sitecore Helix principles, modular design, and reusable components. I design systems that are easy to extend, test, and support as business needs grow. → Headless & Modern Frontend Hands-on experience building headless CMS solutions using React, Next.js, and Vue, integrated via REST and GraphQL APIs for fast, flexible, and AI-ready digital experiences. → Backend, Integrations & Cloud Expert in C#, Dot NET Core, and Web API development, with solid experience in enterprise integrations, Azure environments, CI/CD pipelines, and performance optimization. → AI-Focused, Human-Driven Delivery I use AI tools to accelerate development, improve code quality, and enhance consistency—while ensuring every solution is fully reviewed, secure, and built to enterprise standards. → Certifications & Professional Trust 4x Sitecore Certified Professional 4x Sitefinity Certified Professional Certified ScrumMaster → How I Work I take ownership, communicate clearly, and deliver production-ready solutions with minimal ramp-up. Clients value my ability to quickly understand complex systems and provide reliable, long-term results. I’m currently offering my senior-level expertise at competitive rates and am open to long-term, high-impact projects. If you’re looking for a dependable Sitecore, Umbraco, Sitefinity or Optimizely expert who can architect and scale your platform with confidence, let’s connect.