Senior Mobile Application Engineer | React Native Developer — 7+ years shipping production iOS & Android apps across Fintech, EdTech, Healthcare, Enterprise, E-commerce & Gaming.
| App | Category | Stack |
|---|---|---|
| Cash Coach AI | AI + Fintech | React Native, OpenAI, Firebase |
| Zid POS | Enterprise POS | React Native Windows, Realm DB |
| App Work | Technician App | React Native, Node, Firebase, AWS |
| Bright Future | EdTech | React Native, PHP Laravel, BunnyCDN, AWS |
| Clean Energy | Maps + Location | React Native, Google Maps, Waze |
| Bigshooter Golf | Gaming | React Native, AWS |
| YouOptimised | Health Tech | React Native, Apple Health, Terra SDK |
| Stakester | Gaming | React Native, Elixir |
| LockStock | E-commerce | Shopify integration, Cart, Checkout, Order tracking |
- Mobile: React Native, Flutter, Swift, SwiftUI, Dart, Expo, Kotlin
- Web: Next.js, React.js, TypeScript, JavaScript, Node.js
- Backend: Node.js, Express.js, MongoDB, PostgreSQL
- DevOps: Fastlane, Bitrise, Jenkins, CI/CD, CodePush, GitHub
- Integrations: OpenAI, Stripe, Shopify, Google Maps, Waze, Apple Health, Terra SDK
- Store: Apple Connect, Google Play Console
- Cloud: AWS, GCP, Firebase, SupaBase
- AI Tools: GitHub Copilot, Cursor, Claude, ChatGPT, Codex, Gemini
- Senior Software Engineer at Devsinc (2025 - 2026)
- Senior Software Engineer at InvoZone (2021 - 2025)
- Software Engineer at Technovier (2019 - 2021)
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Fast understanding of requirements — I quickly grasp business needs and translate them into working solutions without long back-and-forth.
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Strong remote work experience — Proven track record working with clients across the GCC, the USA, and Europe, adapting to different workflows, time zones, and expectations.
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Clear communication (C1 English) — I communicate ideas, progress, and challenges clearly, reducing misunderstandings and delays.
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Ownership mindset — I don’t just execute tasks; I take responsibility for delivering complete, reliable features.
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Production experience — Built and shipped multiple real-world apps with complex logic, integrations, and scalability requirements.
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Reliable & responsive — Clients trust me to deliver on time and stay proactive throughout the project lifecycle.
"Qasim consistently demonstrates exceptional technical skills, a strong work ethic, and delivers projects on time while exceeding expectations."
— Farman Sikandar Ali, Project Manager
"Very good at analyzing requirements and making decisions that help build scalable applications."
— Adeel Miraj, Principal Consultant Mobile Development
"Reliable, skilled engineer with excellent communication and strong team collaboration."
— Hasan Jafri, Co-Founder @ Big Shooter Golf
"Strong ownership, clear communication, and execution under pressure — played a key role in delivering a critical business win."
— Asna, Team Lead Business Development
If you're building a mobile app or scaling an existing one, I can help.
- Upwork: https://www.upwork.com/freelancers/qasimyousaf
- LinkedIn: https://www.linkedin.com/in/qasim-yousaf
- WhatsApp: https://wa.me/+923244015263
- Contact: +923244015263