Open to opportunities

Roshaan User

@roshaanuser

Message

I build React Native apps and Python/Go backends from mobile to cloud.

Pakistan

Message

I've shipped production React Native apps across Android and iOS, including a Google Play Store release with a 99.8% crash-free rate and zero critical post-launch bugs at Chelan Technologies.

I build end-to-end products from mobile interfaces to backend services, using TypeScript, React Native, Python, Go, FastAPI, Firebase, and REST APIs. My work includes Demura, an AI virtual try-on platform combining FASHN-VTON, U2-Net, and DWPose in a hybrid local-to-cloud architecture.

I've also built ML-powered health applications, live streaming mobile experiences, and automation pipelines that converted 150+ hours of gameplay footage into ML-ready datasets.

Experience

Work history, roles, and key accomplishments

Current

React Native Developer

Current

Chelan Technologies

Aug 2024 - Present (2 years 1 month)

Shipped a production cross-platform mobile app to the Play Store with zero critical post-launch bugs and a 99.8% crash-free rate. Improved codebase maintainability and reduced development cycle time by 35% through Provider-based state management under MVVM.

React Native TypeScript JavaScript REST APIs Firebase MVVM Provider Android iOS Git GitHub

Data Acquisition Specialist

Annotto

Jan 2026 - Feb 2026 (1 month)

Accelerated computer vision model training by structuring 150+ hours of labelled gameplay footage into ML-ready datasets. Built Python automation scripts for the data pipeline.

Python Computer Vision Data Processing Automation