Open to opportunities

Tahir Mahmood

@tahirmahmood2

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Senior React Native Engineer building regulated healthcare mobile apps and AI features.

Germany

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What I'm looking for

I’m looking for a senior role where I can build and optimize production-grade React Native apps in regulated domains, own mobile release engineering, and help deliver measurable performance gains through strong CI/CD, monitoring, and mentoring.

I’m a Senior React Native Engineer with 9+ years building production-grade iOS and Android applications across healthcare, connected medical devices, and enterprise platforms. I’ve led mobile architecture and integrations—especially BLE integrations—while working in regulated healthcare environments where reliability matters.

At VisionHealth in Munich, I led patient-facing healthcare applications for inhalation therapy, supported clinical trials, and managed supervised Apple device workflows for clinical use. I owned iOS and Android release engineering with Fastlane and CI/CD, improved app startup performance by 20–30%, and reduced production crashes using proactive monitoring with Sentry. I also mentor junior engineers, conduct code reviews, and collaborate across engineering, product, design, backend, and clinical teams.

Experience

Work history, roles, and key accomplishments

Current

Senior React Native Engineer

Current

VisionHealth GmbH

Nov 2021 - Present (4 years 7 months)

Led development of patient-facing iOS/Android inhalation therapy apps supporting ~2,300 active users. Improved app startup performance by 20–30%, reduced production crashes via proactive monitoring with Sentry, and owned iOS/Android release engineering using Fastlane and Azure DevOps.

React Native Mobile Architecture Fastlane Azure DevOps XCode Android Studio Sentry Performance Optimization

Senior React Native & React Engineer

Embrace It

Jan 2020 - Nov 2021 (1 year 10 months)

Built cross-platform mobile and web apps for international healthcare and events clients, delivering core workflows including authentication, booking, chat, scheduling, and notifications. Designed offline-first data handling with Realm and Firebase and integrated GraphQL and REST APIs for real-time and transactional features.

React Native React Realm DB Firebase GraphQL REST APIs State Management CI CD

React Native Engineer

Bitsol Technologies

Mar 2017 - Dec 2019 (2 years 9 months)

Developed healthcare, education, and e-commerce mobile applications for international clients. Implemented BLE communication with external medical/wearable devices and integrated Stripe and PayPal for payments, delivering chat, calendar, and appointment booking workflows.

React Native Stripe PayPal Mobile App Development Firebase Android iOS Payment Integration