Umer I.

I believe in empowering others with steady support so they can grow into their full potential. 🚀 340+ mobile apps, backend systems, APIs, and SaaS platforms delivered 🏆 Top Rated Plus on Upwork | 100% Job Success | 88% Recurring Clients 📱 Apps with 5M+ active users | 💼 Projects backed by Stanford & global startups 🌐 Multi-tenant SaaS systems across fintech, healthcare, e-commerce, and education 🔐 Enterprise-grade security, real-time performance, and cloud-native deployments Looking for a full-stack developer who delivers both seamless mobile and web experiences along with robust backend systems? You’ve found one. I specialize in mobile and web application development along with backend infrastructures that are secure, scalable, and built for real-world growth. From MVPs to enterprise systems, I bring a complete skill set in Flutter, React Native, Kotlin, Swift, Java, Dart, ASP.NET, .NET Core, C#, and cloud DevOps to help you launch and scale with confidence. 🧰 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 & 𝐓𝐨𝐨𝐥𝐬 Flutter, React Native, Kotlin, Swift, Java, Dart .NET Core, C#, ASP.NET, Node.js REST APIs, GraphQL, gRPC, WebSockets, SignalR AWS, Azure, Docker, Kubernetes, Lambda, App Services SQL Server, PostgreSQL, MongoDB, Firebase Figma, GitHub, GitLab CI/CD, Jenkins OAuth2, JWT, SSO, Biometric Login Stripe, Apple Pay, Twilio, OpenAI, ERP/CRM integrations 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Cross-platform and native app development with responsive UI/UX, custom animations, real-time features, and secure payment flows 🛠️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Clean, versioned APIs and backend services using .NET Core and Node.js, built with cloud scalability, security, and performance in mind ☁️ 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 Dockerized services, Kubernetes, CI/CD pipelines, and cloud deployments on AWS and Azure 🔐 𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 SSO, 2FA, biometric login, and seamless integrations with Stripe, Twilio, OpenAI, CRMs, and more 📊 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐃𝐞𝐬𝐢𝐠𝐧 & 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 Efficient, secure data storage with indexing, replication, backups, and SQL/NoSQL support 📦 𝐋𝐨𝐧𝐠-𝐓𝐞𝐫𝐦 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞 & 𝐒𝐜𝐚𝐥𝐢𝐧𝐠 Post-launch support, monitoring, app store deployment, bug fixing, and feature updates Whether you're building a mobile-first product, a backend-heavy SaaS platform, or a fully integrated cloud system, I bring the skills and experience to deliver real-world results that scale. 📩 Let’s connect and build something exceptional. Drop a message.