# Usman Nisar — Professional Portfolio > Usman Nisar is a **Software Engineer** based in **Islamabad, Pakistan**. > Portfolio: https://usman-nisar.linkedportfolio.com ## Identity & Contact - **Full Name**: Usman Nisar - **Professional Title**: Software Engineer - **Location**: Islamabad, Pakistan - **City**: Islamabad - **Country**: Pakistan - **Portfolio URL**: https://usman-nisar.linkedportfolio.com - **Business Email**: ghani.nisar@gmail.com - **Available for**: Freelance / Contract work ## About I'm a dedicated Software Engineer with expertise in mobile and cross-platform development. My core skills include Flutter, Swift (iOS & macOS), Firebase, and WebRTC, with experience building apps that are fast, reliable, and user-centered. I enjoy solving complex problems, from real-time communication features to data-driven applications, while keeping code clean, scalable, and maintainable. Over the years, I’ve worked on projects that balance technical performance with elegant design, ensuring products are both efficient and enjoyable to use. Beyond coding, I’m passionate about innovation, continuous learning, and collaboration, and I thrive on bringing creative ideas to life through technology. ## Skills & Areas of Expertise Flutter Developer, iOS Developer, Swift Developer, Mobile App Developer, Cross Platform Development, Node.js Developer, TypeScript Developer, REST API Development, Firebase, Google Maps Integration, Geolocation, Real-time Tracking, AVFoundation, Video Processing, App Store Submission ## Work Experience - **Software Engineer** at Whizpool (2012-04–Present) Senior Software Engineer Whizpool — 2018 to Present Leading development of cross-platform (Flutter) and native iOS/macOS (Swift) apps. Architected and implemented complex features including real-time communication (WebRTC), video metadata extraction (AVFoundation, GPMF, tmcd), and map-based navigation systems. Designed and maintained multi-environment Flutter apps (dev, staging, prod) with smooth CI/CD pipelines. Integrated secure authentication systems (Apple, Google, Firebase Auth) and scalable cloud solutions with Firebase. Mentored junior developers, conducted code reviews, and ensured adherence to clean code and best practices. Software Engineer Whizpool — 2015 to 2018 Contributed to multiple mobile and web applications, focusing on performance optimization and intuitive UI/UX. Implemented custom iOS/macOS app features such as signature scanning, calendar-based task management, and widget customization. Integrated Google Maps and location-based features for enhanced user experience. Collaborated with backend teams to design scalable APIs using Node.js, TypeORM, and PostgreSQL. Mobile App Developer Whizpool — 2012 to 2015 Started career as a mobile app developer, building apps for iOS and early cross-platform solutions. Gained expertise in Swift, Objective-C, and Android (Gradle/Kotlin basics). Delivered apps that combined functional reliability with clean, user-friendly designs. Contributed to client projects across different industries, gaining strong problem-solving and product delivery skills. ## Featured Projects - **DeveloperWithFullPackage**: Migrated iOS projects from CocoaPods to Swift Package Manager, improving build speed and stability Built high-performance mobile apps using Flutter and Swift with scalable architecture Developed secure authentication systems (Apple, Google, Firebase) with seamless user experience Implemented advanced video processing and GoPro telemetry (GPMF) extraction using AVFoundation Resolved complex App Store rejections (including Guideline 4.3), achieving successful approvals Optimized app performance, reducing load times and improving responsiveness Fixed critical production issues, significantly improving app stability and crash rates Designed scalable backend architectures and handled complex API/data integrations Implemented real-time features including live tracking, geolocation, and map-based services Delivered full-featured apps with booking systems, dashboards, and admin panels Built map-based solutions with routing, navigation, and live location tracking Delivered multiple client projects from concept to App Store deployment Technologies: Flutter Developer, iOS Developer, Swift Developer, Mobile App Developer, Cross Platform Development, AVFoundation, Video Processing, Firebase, Node.js Developer, REST API Development, Google Maps Integration, Geolocation, Real-time Tracking, App Store Submission, Scalable Architecture URL: https://usman-nisar.linkedportfolio.com/project/developerwithfullpackage ## Services Offered - **Mobile App Development (iOS & Flutter)**: I build high-performance mobile applications for iOS and cross-platform environments using Flutter and Swift. From concept to deployment, I handle UI/UX implementation, backend integration, and App Store submission. Apps are optimized for scalability, responsiveness, and smooth user experience. - **Backend Development (Node.js / TypeScript)**: I design and develop scalable backend systems using TypeScript and Node.js. Services include REST API development, authentication systems (Google/Apple login), database design, and cloud integration. - **Performance Optimization & Debugging**: I analyze and fix performance bottlenecks in mobile and backend systems. Expertise in resolving complex bugs, optimizing app speed, memory usage, and improving overall system efficiency. - **App Store Submission & Compliance**: End-to-end support for App Store submission including resolving rejections (e.g., guideline 4.3 spam issues), preparing builds, TestFlight setup, and compliance with Apple policies. ## Education - **Bs-IT (Hons) in CS and IT** — University of Peshawar (2008-04–2012-04) ## Online Profiles & Links - LinkedIn: https://www.linkedin.com/in/unisar - GitHub: https://github.com/usman-whizpool --- *Profile generated by [LinkedPortfolio](https://linkedportfolio.com) — Free Professional Portfolio Builder. Platform llms.txt: https://linkedportfolio.com/llms.txt*