Umair Umer

React Native developer and team lead with 6+ years building and shipping high-performance mobile apps across logistics, healthcare, e-commerce, and job-marketplace products, now leading a MERN engineering team as Assistant Manager at Vinspiree. Led the mobile build of a delivery-tracking app for Meem Logistics (Dubai) and contributed to an e-commerce launch that drove a 200% sales increase within six months. Comfortable owning a feature end-to-end and guiding a team through architecture decisions.

Team Lead & Assistant Manager, MERN - Vinspiree - Karachi

(2025-09)

• Lead a MERN-stack team as Assistant Manager: assign tasks, track progress, and unblock developers.
• Define system and project architecture, and guide the team on implementation approach and standards.

Freelance React Native Developer - Self-Employed / Contract

(2024-05 - 2025-09)

• Delivered React Native app projects for freelance clients, covering UI, API integration, and release.
• Managed multiple concurrent engagements end-to-end, from requirements through deployment.

React Native Developer - Meem Logistics - Dubai (Remote)

(2023-06 - 2024-05)

• Led development of a real-time delivery-tracking app: live route mapping and driver shift management.
• Built barcode scanning, digital signature capture, and offline storage for field use in low-connectivity areas.

Mobile App Developer - DesignTech - Karachi

(2022-10 - 2023-05)

• Shipped healthcare and e-commerce apps in React Native, from UI to release.
• Integrated Mapbox/Mappable for pickup-drop-off tracking, push notifications, and WebRTC video calling.

React Native Engineer - Digaptics - Karachi

(2021-06 - 2022-09)

• Built payroll/HR mobile modules, bridging native camera and file-upload features into React Native.
• Integrated order-status, location-tracking, and authentication APIs; optimized performance with Redux.

Junior React Native Developer - Toobetech - Karachi

(2020-09 - 2021-05)

• Built UI components for real estate and on-demand service apps, plus reusable component libraries.
• Contributed to agile sprints and pushed linting/testing standards across the team.

Mobile App Intern - Proficient Digital - Karachi

(2020-02 - 2020-07)

• Assisted with cross-platform development, bug fixes, and UI polish on production apps.
• Partnered with backend engineers on API integration during onboarding.

Bachelor's - Information Technology - Shaheed Benazir Bhutto University (2021-01)