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Usama Yaseen
@usamayaseen_
Senior React Native Engineer, Team Lead, 20M USD Payroll System
Pakistan
Anglais, Ourdou
À propos de moi
Senior React Native Engineer & Team Lead. I led engineering on MoM by AIO, 50+ US restaurants, $20M+ payroll processed. Also: BBC World Service app (1M+ users), WalletX crypto wallet (50K+ downloads), and Karawan, a startup I founded solo.
I build iOS & Android apps: startup MVPs, fintech systems, real-time features, Firebase & AWS backends. AI-accelerated workflow, faster delivery, no corners cut.
Message me with your idea. I scope honestly and respond within hours.
Compétences
Usama Yaseen
hors ligne •
Voir mes services
Développement multiplateforme
I will build your react native ios and android app with firebase
Mobile design
I will design a mobile app
Portfolio
Expérience professionnelle
Team Lead & Senior Software Engineer
AIO • Temps plein
Feb 2024 - Present • 2 yrs 6 mos
Led engineering on MoM by AIO, a restaurant management platform live on the App Store with 50+ US restaurants. Architected fintech payroll system (NestJS + AWS) processing $20M+ annually — completes payroll for 1000 employees in 30 seconds, 60x faster than competitors. Reduced production incidents by 95% through codebase rebuild and architectural improvements. Built real-time order sync and payment routing for Doordash, Uber Eats & GrubHub integrations. Implemented dual payment processing (Adyen & Stripe) with zero-downtime migration. Rearchitected backend using AWS Lambda/SQS/SNS for async processing and scalability.
12 Avis
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johanletelie652
Client récurrent
États-Unis
Always exceeding expectations and understanding the problem while delivering results.
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devsquads
Pakistan
It was a pleasure working with usama. He quickly grasped the requirements and delivered efficiently. I would definitely recommend him for any future projects.
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johanletelie652
Client récurrent
États-Unis
Provided thorough understanding of the project and brings insight to implement solutions.
50 $US-100 $US
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4 jours
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johanletelie652
Client récurrent
États-Unis
Utile?
johanletelie652
Client récurrent
États-Unis
Very wellspoken and pays attention to detail. Willing to apply logic and understand how to provide solutions for problems.
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