Md K.
Full Stack Softwar Developer | Expert in ASP.NET Core, Angular and SQL
Hello! 👋 I'm Khairuzzaman, a Full-Stack .NET Developer with 3+ years of experience crafting scalable, secure, and high-performance web applications, SaaS platforms, and enterprise solutions for startups, mid-size businesses, and Fortune-level clients in finance, healthcare, e-commerce, logistics, and more. As a Full-Stack Developer, I specialize in building high-performance applications with .NET 10 and Angular 21, following clean architecture principles and industry best practices. From backend APIs to dynamic frontends — I design systems that are built to scale. 💡 What I Do Best 🔹 Backend Engineering (.NET Expert) ✔ ASP.NET Core (.NET 10) ✔ RESTful API Development ✔ Clean Architecture & SOLID Principles ✔ CQRS Pattern ✔ Entity Framework Core ✔ Authentication & Authorization (JWT-based security) ✔ Performance Optimization & Scalable System Design I build APIs that are secure, well-documented, maintainable, and ready for real-world traffic. 🔹 Frontend Development (Modern Angular Applications) ✔ Angular 21 with TypeScript ✔ Reactive Forms & RxJS ✔ Component-Based Scalable UI Architecture ✔ Tailwind CSS & Bootstrap ✔ Responsive & Mobile-Friendly Design I create fast, clean, and user-friendly interfaces that deliver an excellent user experience. 🔹 Database & Deployment ✔ MS SQL Server (optimized queries & indexing) ✔ IIS Deployment & Hosting ✔ GitHub Version Control ✔ Production Environment Setup 🎯 How I Add Business Value ✅ Build MVPs that are ready for real customers ✅ Convert legacy systems into modern scalable architecture ✅ Improve performance and reduce technical debt ✅ Deliver clean, maintainable, and future-proof code ✅ Communicate clearly and deliver on time I don’t just develop features — I build systems that businesses can rely on long-term. 🌟 Why Clients Choose To Work With Me ✅ Business-First Mindset: I take the time to understand your goals, ensuring the technology serves your business strategy. ✅ Enterprise-Grade Quality: I deliver clean, testable, well-documented code that is built to last and easy to maintain. ✅ Clear Communication: I pride myself on being responsive, providing regular updates, and explaining complex topics in simple terms. ✅ Long-Term Partnership: I’m not just looking for a quick gig; I’m looking to build a relationship and become a trusted technical partner for your business. 📩 Let’s Build Something Great If you need a developer who understands both technical architecture and business goals, let’s connect. Send me a message with your project details — I’ll respond quickly with a clear plan and honest recommendations. Looking forward to working with you.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $478
Billed in all: $1,933$1.9k
$478 in the last 6 months
Earnings, last 30 days
Skill rankings: Top 22% in ASP.NET MVC
Ranked by MRR among everyone on Upwork with the skill.
- #49Microsoft IIS211 freelancers · 🇧🇩 #3Top 23%🇧🇩#3 of 10
- #288Entity Framework1,047 freelancers · 🇧🇩 #9Top 28%🇧🇩#9 of 27
- #342ASP.NET Web API1,447 freelancers · 🇧🇩 #10Top 24%🇧🇩#10 of 40
- #571ASP.NET MVC2,619 freelancers · 🇧🇩 #9Top 22%🇧🇩#9 of 63
- #748Microsoft SQL Server2,759 freelancers · 🇧🇩 #16Top 27%🇧🇩#16 of 79
- #1,500Back-End Development4,183 freelancers · 🇧🇩 #31Top 36%🇧🇩#31 of 108
- #1,528Bootstrap6,899 freelancers · 🇧🇩 #85Top 22%🇧🇩#85 of 425
- #1,614Angular6,816 freelancers · 🇧🇩 #18Top 24%🇧🇩#18 of 103