Muhammad Umar

Mern Stack Developer

Cognizant • Tiempo completo

Aug 2025 - Present • 1 yr

Full Stack MERN Developer — 5+ Years of Experience Experienced Full Stack MERN Developer with 5+ years of expertise in designing, developing, and delivering production-ready web applications and digital platforms. I specialize in building complete end-to-end solutions using React.js, Next.js, Node.js, Express.js, MongoDB, and modern JavaScript technologies. Throughout my experience, I have worked on diverse real-world projects, including large-scale e-commerce platforms, travel and visa service platforms, booking systems, service-based applications, dashboards, and custom business solutions. I have been involved in the complete development lifecycle, from understanding business requirements and designing application architecture to developing frontend interfaces, backend APIs, database systems, integrations, testing, optimization, and deployment. My experience includes developing responsive and high-performance user interfaces, reusable component systems, scalable RESTful APIs, secure authentication and authorization systems, dynamic data management, database architecture, third-party API integrations, e-commerce workflows, booking systems, payment-related flows, and complex business logic. I have worked extensively with React.js, Next.js, Node.js, Express.js, MongoDB, Mongoose, REST APIs, JWT authentication, JavaScript, TypeScript, Redux Toolkit, Zustand, Tailwind CSS, Git, GitHub, Postman, AWS, Docker, Vercel, and Netlify. I focus on writing clean, maintainable, scalable code and building reliable digital products that combine strong technical architecture with excellent user experience. I am experienced in working independently as well as collaborating with designers, developers, clients, and cross-functional teams to deliver high-quality solutions from concept to production.

Full Stack Developer

OptimusPrime • Tiempo completo

Feb 2023 - Jul 2025 • 2 yrs 5 mos

MERN Stack Developer | 5+ Years of Experience Experienced MERN Stack Developer with 5+ years of experience designing, developing, and maintaining modern, scalable, and high-performance web applications. Skilled in building complete full-stack solutions using MongoDB, Express.js, React.js, and Node.js, from responsive user interfaces to robust backend systems and database architecture. Throughout my experience, I have worked on a wide range of web applications, including e-commerce platforms, service-based platforms, travel and visa applications, dashboards, booking systems, and custom business solutions. I have been involved in the complete software development lifecycle, including requirement analysis, application architecture, UI development, API development, database design, third-party integrations, testing, debugging, optimization, and deployment. Key Responsibilities & Expertise Developed modern, responsive, and scalable web applications using React.js. Built reusable, maintainable, and performance-optimized frontend components. Developed robust RESTful APIs and backend services using Node.js and Express.js. Designed and managed MongoDB databases using Mongoose. Implemented complete CRUD operations and dynamic data management. Developed secure authentication and authorization systems using JWT. Integrated frontend applications with REST APIs and third-party services. Worked with user authentication, role-based access control, forms, validations, and business logic. Built e-commerce functionality including product management, categories, search, filters, cart, checkout, and order workflows. Developed booking and service-based platforms with dynamic forms and customer workflows. Integrated payment gateways and external APIs where required. Implemented responsive designs from Figma and other design systems. Optimized applications for performance, scalability, and cross-browser compatibility. Debugged complex frontend and backend issues and improved application