Muhammad Saim

Senior Mobile App Developer

ScarMatrix • Full time

Mar 2025 - Present • 1 yr 7 mos

Currently working as a Senior Mobile App Developer at Scarmatrix, leading Flutter development for production Android and iOS client apps. I own features and products end-to-end — from architecture and UI to integrations, testing, store submission, and post-launch improvements. I focus on scalable Flutter architecture, clean code, and delivering production-ready apps that perform well for real users. Key contributions: • Lead Flutter development for Android and iOS client apps • Design and implement clean architecture and scalable app structure • Build advanced features (auth, APIs, Firebase/Supabase, notifications, maps, payments, etc.) • Own quality from development through App Store / Play Store release • Improve performance, stability, and user experience • Guide scope, timelines, and delivery with clear client communication • Support bug fixing, upgrades, and continuous iteration after launch In this role, I deliver high-quality Flutter apps with full ownership — from idea and architecture to store release and ongoing support.

Flutter Developer

Blue Horn Technologies • Full time

Aug 2023 - Feb 2025 • 1 yr 6 mos

At BlueHorn Tech, I worked as a Flutter Developer building and maintaining cross-platform Android and iOS applications for client projects. I took more ownership of features end-to-end — from UI implementation to API/Firebase integration and store-ready releases. I worked on apps across social, lifestyle, commerce, and utility categories, focusing on clean code, performance, and reliable delivery. Key contributions: • Built and maintained Flutter apps for Android and iOS • Integrated Firebase services (Auth, Firestore, notifications, etc.) • Connected REST APIs and third-party services • Implemented state management and reusable UI components • Supported App Store and Google Play submission workflows • Fixed production issues and improved app performance • Delivered client features on time with clear communication This role strengthened my ability to ship complete Flutter products and handle real client requirements from development through release.

Flutter Developer

Jotun Techs • Full time

Dec 2021 - Feb 2023 • 1 yr 2 mos

Started my professional Flutter career at Jotun Techs, where I learned Flutter and Dart from the ground up and began building real mobile applications for Android and iOS. During this role, I focused on understanding Flutter architecture, widgets, navigation, state management basics, and clean UI implementation. I worked on developing mobile app features, fixing bugs, improving layouts, and supporting the team in delivering stable releases. Key contributions: • Learned Flutter and Dart in a production environment • Built UI screens and connected basic app flows • Worked on Android and iOS builds and testing • Fixed bugs and improved app stability • Collaborated with seniors to follow coding standards and delivery processes This role gave me a strong foundation in Flutter mobile app development and hands-on experience shipping features used by real users.