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Vasu Sagar
@sagar_vasu
Full Stack SaaS, React Native, AI Developer
Pakistan
English, Urdu, Sindhi
About me
Full-stack developer specializing in SaaS, web apps, React Native mobile apps, scalable Node.js backends, and production AI integrations. I work with React, Next.js, TypeScript, PostgreSQL, MongoDB, Firebase, OpenAI, Claude, and Gemini. From idea or Figma to frontend, backend, APIs, databases, AI features, testing, and deployment, I can build your product end to end. With 90+ Fiverr reviews and a 5.0 rating, I deliver clean, maintainable code, clear communication, and realistic timelines. Send me your requirements, idea, or existing code to get started.
Skills
Vasu Sagar
Offline •
Average response time: 1 hour
See my services
Cross-Platform Development
I will develop a react native app for ios and android with expo
AI Integrations
I will integrate openai, claude, or gemini API into your app
Portfolio
Work experience
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Full Stack Developer
Fiverr • Full-time
Feb 2022 - Present • 4 yrs 7 mos
Since going independent, I've focused on full stack and AI-integrated development for clients across web, mobile, and SaaS products. This has included building multi-tenant backend systems with proper data isolation, integrating AI/LLM APIs (OpenAI, Claude) into production chatbots and voice agents, and developing REST APIs and database architecture for SaaS platforms from the ground up. I handle projects end to end — architecture, backend, frontend, and deployment — and work directly with clients to turn a rough product idea into something usable and scalable.
92 Reviews
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Rating Breakdown
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- Recommend to a friend
- Service as described
1-5 out of 92 Reviews
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fs5195
Germany
Great experience!
$400-$600
Price
5 days
Duration
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justbits
India
Ongoing collaboration
Great work. on time.
$100-$200
Price
5 days
Duration
Helpful?
jramisa
United Kingdom
Ongoing collaboration
Excellent service and great communication. Would 10/10 recommend
$200-$400
Price
2 days
Duration
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mituchris
United States
Ongoing collaboration
Great work and quick turn around
$200-$400
Price
Helpful?
mituchris
United States
Ongoing collaboration
Quick turnaround, great communication, and the developer is very knowledgeable. Looking forward to continuing working with him
$50
Price
Helpful?
