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Resume

Osama Tahir

Senior Mobile & Full-Stack Developer | Backend APIs · Payment Systems · Mobile (Flutter / React Native)

Dubai, UAE info@osama-me.digital +971507276823 /in/otahir21Upwork
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Professional Summary

Senior mobile and full-stack developer with 6 years of production experience across the UAE and GCC. I have contributed to 20+ mobile and web products, including contract work on PAK ID, Pakistan's official national identity app (the product has 1M+ downloads and a 4.8 rating). At Metatech I implemented Laravel APIs used for high-volume client reporting and a Flutter Web CRM that reduced reporting time by 60%. At Prism Digital I implemented payment integrations (Stripe, Apple Pay, Network International) used to process $1.2M+ in transactions. Scrum Master Certified. I also integrate LLM APIs (OpenAI, Gemini) where they are a genuine product feature.

Core Skills

Backend Engineering & APIs
Laravel (PHP), Node.js, REST & GraphQL APIs, Microservices & Event-driven, MySQL, Redis
Payments & Fintech
Stripe · Apple Pay, Network International, PCI-aware payment flows, Secure API integration
Mobile & Frontend
Flutter (iOS · Android · Web), React Native, SwiftUI · Kotlin · Java, BLoC · GetX
Cloud & DevOps
AWS (EC2 · S3 · Lambda), Firebase, CI/CD & Containers, Performance tuning & caching
AI & Emerging Tech
LLM APIs (OpenAI · Gemini), In-app chatbot features, AI-assisted Dev (Copilot · Claude · Cursor)
Leadership & Delivery
Agile / Scrum (SMC Certified), Code review & mentoring, Architecture reviews, Stakeholder communication

Professional Experience

Senior Full-Stack Developer (Flutter Web & Mobile)

Jun 2025 – Present

Metatech · Dubai, UAE

  • Leading end-to-end development of VyooO, a creator social platform (iOS + Android) with full-screen reels, stories, live streaming (Agora), real-time chat and voice/video calls (CallKit), and immersive 360°/VR video with gyro-based playback and live 360° panorama broadcasting.
  • Shipped AI-powered features in VyooO — AI hashtag generation and feed fact-check badges — alongside RevenueCat subscriptions, creator monetization and payout flows, and Cloudflare Stream video delivery.
  • Architected a Flutter Web CRM with real-time analytics dashboards, cutting client reporting time by 60%.
  • Designed and maintained Laravel REST APIs handling 10K+ daily requests at 99.9% uptime, powering Stripe and Google Analytics integrations.
  • Built and shipped an in-app AI chatbot for the CRM using OpenAI and Gemini LLM APIs, bringing conversational AI assistance directly into the client-facing platform.
  • Mentored 3 junior developers and drove architecture reviews and caching decisions across client platforms.

Tech: Flutter, Firebase, Agora, RevenueCat, Cloudflare Stream, Laravel, MySQL, Redis, OpenAI & Gemini APIs

Senior Mobile Developer (Flutter / React Native) | Laravel API Specialist

Jul 2023 – Jun 2025

Prism Digital · Dubai, UAE

  • Led development of 6+ high-performance apps (Flutter/React Native) with 200K+ downloads and 4.7/5 average store ratings — including Dvago, ranked #13 in the App Store Medical category.
  • Integrated Stripe, Apple Pay, and Network International across fintech and e-commerce apps, processing $1.2M+ in transactions with zero security breaches — built to regulated, high-availability standards.
  • Engineered Laravel REST APIs sustaining 5K+ requests/minute; reduced latency by 40% through Redis caching and query optimization.
  • Mentored 2 junior developers and introduced Agile workflows that accelerated project delivery.

Tech: Flutter, React Native, Laravel, Firebase, Stripe, Network International, GetX, MySQL

Lead Flutter Developer | Cross-Platform Apps & API Integration

Dec 2021 – May 2023

Freelancer.com (Independent Contractor) · Islamabad, Pakistan

  • Contributed to PAK ID — NADRA Pakistan's official national identity app (1M+ downloads, 4.8 Google Play rating) — building biometric authentication flows, ICAO-compliant photo capture, and stability improvements for large-scale usage.
  • Delivered 12+ Flutter applications for global clients with 100% on-time delivery and 4.9/5 client satisfaction.
  • Integrated REST APIs (Firebase/Node.js) and designed UI/UX for 8 apps; maintained <1% crash rate via rigorous testing (Jest, Mockito).

Tech: Flutter, Firebase, Node.js, GetX, Stripe, Google Maps API

Mobile App Developer Intern (Android/iOS) | PHP Backend

Jun 2020 – Nov 2021

Soft Code Labs · Islamabad, Pakistan

  • Developed 5+ Android/iOS apps with 50K+ downloads and 4.5/5 ratings.
  • Built Core PHP APIs, reducing data sync time through query optimization; deployed to Google Play and App Store with full store-guideline compliance.

Tech: Java, Swift, Core PHP, MySQL, Firebase

Key Achievements

  • Processed $1.2M+ in secure payments (Stripe, Apple Pay, Network International) for UAE & GCC fintech apps — zero security breaches.
  • Engineered REST APIs handling 10K+ daily requests at 99.9% uptime; cut client reporting time by 60% with a Flutter Web CRM.
  • Contributed to 20+ production applications, including PAK ID (the product has 1M+ downloads and a 4.8 rating) and Dvago (#13 Medical on the App Store).
  • Mentored engineers across Metatech and Prism Digital while leading Agile delivery end-to-end (Scrum Master Certified).

Education & Certifications

B.E. Computer Software Engineering

Foundation University Islamabad (FUI)

2018 – 2022

  • Scrum Master Certified (SMC)
  • Introduction to Android Mobile App Development
  • Introduction to Containers
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