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English
$
USD
I will build your react native ios and android app with firebase
Usama Yaseen
4.8
4.8
Gig Summary
About this gig
I led engineering on MoM by AIO live on the App Store, used by 50+ US restaurants, processing $20M+ in annual payroll. Also: BBC World Service (1M+ users) and WalletX crypto wallet (50K+ downloads).
Senior React Native Engineer & Team Lead. 4+ years shipping production apps.
WHAT I BUILD
- Startup MVP ideas to the App Store
- E-commerce cart, Stripe/Adyen payments
- Social apps chat, feeds, notifications
- Booking/delivery maps, live tracking
- Fintech & wallet apps auth, 2FA
- Business tools, dashboards, ERP modules
TECH STACK
- Mobile: React Native · Expo · TypeScript
- Backend: Node.js · NestJS · Express · REST APIs
- Database: Firebase Firestore · PostgreSQL · MongoDB
- Auth: Firebase Auth · JWT · OAuth 2.0 · 2FA
- Payments: Stripe · Adyen
- Cloud: AWS (Lambda, SQS, S3) ·
WHY I DELIVER FASTER THAN MOST
I use AI-accelerated development with Cursor and Claude Code daily, the same tools I use in my full-time Senior Engineer role. I prototype features in hours, catch bugs before review, and ship iterations the same day.
TO GET STARTED:
- Brief description of your app idea
- Designs or wireframes, if available
- Target platform (iOS, Android, or both)
- Key features needed for v1
Get to know Usama Yaseen
Usama Yaseen
Senior React Native Engineer, Team Lead, 20M USD Payroll System
- FromPakistan
- Member sinceMar 2022
- Last delivery1 year
Languages
Urdu, English
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.
My Portfolio
FAQ
What is needed to get a new mobile app development project underway?
I will need specific criteria, screen designs or mockups (if available), feature information, and comparable cross-platform mobile app preferences as a mobile app creator.
The source code for developing mobile apps is owned by who?
Source code sharing is a part of every bundle I provide for creating apps. Thus, the whole React Native mobile app source code will be sent to you.
Will my app work on both iOS and Android devices?
Yes, using React Native, I will develop your app to be compatible with both iOS and Android, ensuring a seamless experience for users on both platforms.
Can you help with app design as well?
Absolutely! I can work on both the development and design of your app, creating an intuitive and visually appealing user interface that enhances the user experience.
What information do you need from me to start the project?
To get started, I need detailed information about your app idea, including its purpose, target audience, key features, and any specific design preferences you may have.
How do we communicate during the project?
Communication is key to a successful project. We can stay in touch through Fiverr messages, email, or video calls to ensure we are aligned throughout the development process.
Can you integrate third-party services into my app?
Yes, I can integrate various third-party services and APIs into your app, such as payment gateways, social media logins, and other functionalities you require.
Reviews
9 reviews for this Gig
| (7) | ||
| (2) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J 
johanletelie652
United States
Ongoing collaborationAlways exceeding expectations and understanding the problem while delivering results.
$100-$200
Price
1 day
Duration
Helpful?D 
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.
$50
Price
3 days
Duration
Helpful?J johanletelie652
United States
Ongoing collaborationVery fast and meets deadlines
$200-$400
Price
2 days
Duration
Helpful?J johanletelie652
United States
Ongoing collaborationVery wellspoken and pays attention to detail. Willing to apply logic and understand how to provide solutions for problems.
$100-$200
Price
1 day
Duration
Helpful?F faizan_ullah_19
Germany
I had an outstanding experience working with Usama. He delivered a project plan that was completely aligned with my requirements. His professionalism and timely delivery were beyond impressive and the quality of his work exceeded my expectations. His dedication to ensuring customer satisfaction is commendable....
$50
Price
4 days
Duration
Helpful?
Reviews
9 reviews for this Gig
| (7) | ||
| (2) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J johanletelie652
United States
Ongoing collaborationAlways exceeding expectations and understanding the problem while delivering results.
$100-$200
Price
1 day
Duration
Helpful?D 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.
$50
Price
3 days
Duration
Helpful?J johanletelie652
United States
Ongoing collaborationVery fast and meets deadlines
$200-$400
Price
2 days
Duration
Helpful?J johanletelie652
United States
Ongoing collaborationVery wellspoken and pays attention to detail. Willing to apply logic and understand how to provide solutions for problems.
$100-$200
Price
1 day
Duration
Helpful?F faizan_ullah_19
Germany
I had an outstanding experience working with Usama. He delivered a project plan that was completely aligned with my requirements. His professionalism and timely delivery were beyond impressive and the quality of his work exceeded my expectations. His dedication to ensuring customer satisfaction is commendable....
$50
Price
4 days
Duration
Helpful?
