Hire the Best .NET Core Developers
in the Czech Republic

Hello there! I'm Mahesh, I am a Full-stack developer having more than 5+ years of experience in building websites and web applications. I have worked to build sites from scratch OR to create additional features for existing ones. I am always on the lookout for exciting projects to work on and smart people to collaborate with! I have sound knowledge of the following technologies: ✓ Frontend: JavaScript, React JS + Next JS, Vite JS + Redux, TypeScript, .NetCore, .Net ASP5 ✓ Design: Tailwind CSS, MUI, SASS, Custom CSS ✓ Backend: Nodejs(express), Python ✓ Database: MongoDB, MySQL, PostgreSQL, Firebase, Django ✓ AWS, GoogleCloud, Firebase Functions ✓ Github, GitLab, Bitbucket, and other project management tools ✓ Trello, Jira, Asana I am considering work not only as a way to make a living. but also to build a career here at Upwork. So I tend to seek a long-standing relationship rather than just a quick benefit. Thanks for reading my profile. Looking forward to hearing back from you. Best Regards, Mahesh Kumar

I'm a senior software engineer with a decade of experience turning complex ideas into production-ready systems. My core stack is C#/.NET for secure, cloud-native backends and React for responsive, user-friendly UIs. I've built and optimized platforms in e-commerce, logistics, and energy trading. I enjoy shaping ambiguous requirements into real solutions and taking full ownership of the software lifecycle: from design and development to deployment, monitoring, and support. Beyond coding, I contribute by leading architecture discussions, running code reviews, and mentoring engineers, helping teams align and grow. What excites me most is building software that not only scales but also empowers businesses to move faster with confidence.

After several years focused on direct, long-term client relationships outside UpWork, I'm back and actively taking on new projects. I've been building production web software for 25+ years, the last several as an independent developer working directly with startups, small businesses, and larger organizations including government agencies. I work end to end: architecture, backend (ASP.NET Core, C#, Node.js), and frontend (Angular, Next.js, Vue.js, TypeScript), so you get one person who owns the whole project instead of a hand-off between specialists. I'm also experienced integrating AI into real products (OpenAI, Anthropic, Dialogflow, Alexa) and comfortable using AI-assisted development to move faster, while equally capable of delivering without it if that's a requirement on your project. Past work includes CzechTourism, Stora Enso (a China-facing e-marketplace spanning three continents), Boston Logan International Airport, and Radio Free Europe/Radio Liberty, among others. I'd rather solve the actual problem than just tick off features, happy to talk through your project before we start.

Skilled 🚀 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫. I specialize in building fast, scalable, and high-performance applications using the latest web technologies. I create high-load systems and "pixel-perfect" interfaces using 🌐 𝐍𝐞𝐱𝐭.𝐣𝐬 and ⚙️ 𝐍𝐨𝐝𝐞.𝐣𝐬, along with modern mobile development using 📱 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞. I know all parts of making an application, from complex database architecture and real-time data sync to crafting immersive, animated user interfaces. Also, my passion for high-end hardware gives me a unique edge in understanding performance optimization at a deep level. 𝐈 𝐡𝐚𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 𝐯𝐚𝐫𝐢𝐨𝐮𝐬 𝐟𝐢𝐞𝐥𝐝𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠: 🛒 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞: I have engineered and scaled online store engines that support thousands of concurrent storefronts. This includes complex Stripe integrations and real-time inventory management. (Example: Boosted subscription conversion rates by 30% via Stripe Link 1-click payments.) ⚡ 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: I am really good at making sure everything stays in sync. I build live notification systems and order tracking using SocketIO to ensure zero-lag data flow. 🎨 𝐂𝐫𝐞𝐚𝐭𝐢𝐯𝐞 & 𝐈𝐦𝐦𝐞𝐫𝐬𝐢𝐯𝐞: I have created "pixel-perfect" websites for top design studios. Using Three.js and Framer Motion, I turn static designs into interactive 3D experiences while maintaining 99+ Core Web Vitals. 📱 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐒𝐚𝐚𝐒: I have built and maintained global cross-platform applications for Fintech and HR-tech sectors, ensuring a unified feel between web and mobile (iOS/Android). 𝐓𝐡𝐚𝐭’𝐬 𝐰𝐡𝐚𝐭 𝐈’𝐦 𝐬𝐤𝐢𝐥𝐥𝐞𝐝 𝐢𝐧: 🛠️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js, Express, Nest.js, SocketIO, RESTful API design, Microservices, gRPC, Dependency Injection. 🎨 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: TypeScript, Next.js, React, Three.js, Framer Motion, HTML5, CSS3, Tailwind CSS, State Management (Zustand, React Query, Redux), UI/UX Design. 📲 𝐌𝐨𝐛𝐢𝐥𝐞: React Native (iOS & Android). 🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐂𝐌𝐒: PostgreSQL, MongoDB, Prisma, Sanity, Strapi, Database Design & Optimization. ☁️ 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: AWS (EC2, S3), Vercel, Docker, Nginx, CI/CD, Cloudflare. ⚙️ 𝐎𝐭𝐡𝐞𝐫: Git, Agile/Scrum, Sentry (Error Tracking), Algolia Search, Unit Testing. 𝐋𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 about your goals and how my technical expertise can help your project succeed. Please contact me to discuss your needs! 𝐁𝐞𝐬𝐭 𝐰𝐢𝐬𝐡𝐞𝐬, 𝐌𝐢𝐜𝐡𝐚𝐞𝐥 Keywords: Next.js, React, Node.js, TypeScript, React Native, Full-Stack Development, C#, .NET, Angular, API Development, API Integration, API microservices, ASP.NET Core, AWS, Amazon EC2, Amazon Web Services, Auth0, Backend, Bootstrap, CSS, CSS3, Database Design, Database Development, Database Optimization, Docker, Entity Framework, Figma, Framer Motion, Frontend Development, GDPR, GraphQL, HTML, HTML5, JSON, JavaScript, Microservices, MongoDB, MySQL, Nginx, Nest.js, PWA, PostgreSQL, Prisma, RESTful API, Real-time App, Responsive Design, Sanity CMS, Sentry, SEO optimization, SocketIO, Socket, Software Architecture, SQL, Strapi, Stripe API, Three.js, UI/UX, Vercel, Web Application, Web Development, WebSockets, Zustand, Backend, Back-end, Frontend, Front-end, Fullstack, Full-Stack, Cloud, DevOps, CMS.

I'm a Full Stack Web Developer specializing in modern web applications, seeking exciting projects to work on alongside my primary role. My technological stack: Frontend: React/Next.js, Svelte/SvelteKit - creating responsive, user-friendly interfaces Backend: Node.js (ExpressJS), ASP.NET - building robust server-side solutions Full-Stack: From concept to deployment, handling both frontend and backend seamlessly Why work with me: ✅ Responsive communication (CET timezone) ✅ Flexible availability (10-40 hours/week) ✅ Always eager to learn new technologies for your specific needs If you’re in need of frontend implementation, API development or developing an entire app, I am happy to provide help

Hello. I'm .NET/C# developer with over 10 years of commercial development. My core competency lies in complete management of a new software development project, in all phases of web project development from prototype to launch. And I am seeking opportunities to build software from the ground up for you or your business. My objective is to provide excellent service, with timely, accurate, and professional manner.