Ver categorias
Explorar
Fiverr Pro
Português
$
USD
Usama Yaseen
@usamayaseen_
Level 1
Senior React Native Engineer, Team Lead, 20M USD Payroll System
Paquistão
Inglês, Urdu
Sobre mim
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.
Habilidades
Usama Yaseen
offline •
Tempo médio de resposta: 1 hora
Conheça meus serviços
Desenvolvimento Multiplataforma
I will build your react native ios and android app with firebase
Design de Aplicativos
I will design a mobile app
Portfólio
Experiência profissional
Team Lead & Senior Software Engineer
AIO • Período integral
Feb 2024 - Present • 2 yrs 7 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 $20M+ annually — completes payroll for 1000 employees in 30 seconds, 60x faster than competitors. Reduced production incidents by 95% through codebase rebuild and architectural improvements. Built real-time order sync and payment routing for Doordash, Uber Eats & GrubHub integrations. Implemented dual payment processing (Adyen & Stripe) with zero-downtime migration. Rearchitected backend using AWS Lambda/SQS/SNS for async processing and scalability.
13 Avaliações
| (9) | ||
| (4) | ||
| (0) | ||
| (0) | ||
| (0) |
Classificação detalhada
- Nível de comunicação do freelancer
- Qualidade da entrega
- Valor da entrega
1-5 fora das 13 avaliações
Ordenar por
Mais relevante
seb2623
Austrália
Útil?
johanletelie652
Estados Unidos
Colaboração contínua
Always exceeding expectations and understanding the problem while delivering results.
Útil?
devsquads
Paquistão
It was a pleasure working with usama. He quickly grasped the requirements and delivered efficiently. I would definitely recommend him for any future projects.
Útil?
johanletelie652
Estados Unidos
Colaboração contínua
Provided thorough understanding of the project and brings insight to implement solutions.
US$ 100-US$ 200
$
4 dias
Tempo
Útil?
johanletelie652
Estados Unidos
Colaboração contínua
Útil?
