Jan Michael M.

Senior Frontend Developer specializing in React, Next.js, Sitecore, and Umbraco with strong experience building fast, scalable, and high-performing enterprise websites and content-driven platforms. I help companies and agencies deliver modern frontend solutions integrated with powerful CMS platforms. From healthcare and corporate websites to large-scale marketing platforms, I build interfaces that are reliable, maintainable, and optimized for performance, SEO, and real-world users. WHAT I DO: ✔ React & Next.js frontend development ✔ Enterprise website and web application development ✔ Sitecore & Umbraco CMS integrations ✔ Component-based UI architecture ✔ Performance optimization and Core Web Vitals ✔ SEO-friendly and accessible interfaces ✔ API integrations and headless CMS setups ✔ Bug fixing, refactoring, and UI improvements ✔ Long-term support and maintenance WHY CLIENTS HIRE ME: ✔ Enterprise and agency project experience ✔ Clean, scalable, and maintainable code ✔ Strong attention to UI/UX details ✔ Clear communication and reliable delivery ✔ Comfortable working with distributed teams I’m used to collaborating with designers, backend developers, and content teams to ship high-quality web experiences on schedule. If you’re looking for a senior frontend developer who can own your frontend and deliver production-ready results, let’s discuss your project.