Looking for a job

Osama Bin Asif

@osamabinasif

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I build and ship cross-platform mobile apps with React Native, Flutter, and .NET MAUI.

Pakistan

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What I'm looking for

I'm looking to build and ship cross-platform mobile products, lead delivery across React Native, Flutter, and .NET MAUI, and collaborate with agile teams on meaningful user-facing applications.

I've led the development of 20+ published mobile apps and contributed to 50+ applications across healthcare, fintech, delivery, social, gaming, and e-commerce.

At Celsius Software, I build Chaart for City Fertility Australia, digitizing IVF laboratory workflows with clinical validation and real-time tracking. I also develop the Patient Portal in Flutter and the Addam and Eeve donor-bank platforms in .NET MAUI.

Previously, I led mobile teams at Codistan Ventures, delivering products such as Kavan Health, Calonic, EasyHVAC, Ranchers Cafe, and Lobbyist. I take projects from requirements and architecture through code review, mentoring, and App Store and Google Play releases.

Experience

Work history, roles, and key accomplishments

Current

Senior React Native Developer

Current

Celsius Software LLC

Oct 2025 - Present (1 year)

Build and maintain Chaart, a React Native fertility/IVF laboratory management platform for City Fertility Australia, digitizing ART workflows with clinical validations and real-time lab tracking. Develop the Patient Portal in Flutter/Dart and the Addam and Eeve donor-bank platforms in .NET MAUI, collaborating remotely with a distributed US-based team.

React Native Flutter Dart .NET MAUI Xamarin REST APIs Clinical Validation Agile Code Review

Senior React Native Developer (Team Lead)

Codistan Ventures

Mar 2023 - Oct 2025 (2 years 7 months)

Led a team of mobile developers in designing and delivering cross-platform React Native applications for clients across healthcare, fintech, hospitality, and gaming industries. Architected scalable app structures integrating Firebase, Node.js/Express backends, and MongoDB, and owned end-to-end project delivery including release management and mentoring.

React Native Redux Firebase NodeJS ExpressJS MongoDB Stripe WebRTC AI Team Leadership Mentorship Agile Code Review App Release Management

React Native Developer

Greelogix Software

Jun 2022 - Mar 2023 (9 months)

Developed and maintained cross-platform mobile applications using React Native, Redux, and Firebase for clients in the ride-booking and real estate sectors. Built the Metrouo ride-booking app for the UAE market and collaborated with backend engineers to integrate REST APIs and optimize performance.

React Native Redux Firebase REST APIs iOS Android Performance Optimization

React Native Developer

TecFolk Pvt. Ltd.

Mar 2020 - Jun 2022 (2 years 3 months)

Built and launched multiple production mobile apps from concept to App Store/Play Store release, including TecGym, Frankily, Anonymous Chat, TimeBug, and Beloved Belief. Implemented real-time chat features with message status and push notifications using Firebase Cloud Messaging.

React Native Firebase Firebase Cloud Messaging Push Notifications Real time Chat App Store Release Play Store Release