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Vasu Sagar
@sagar_vasu
AI Mobile App and Full Stack SaaS Developer
Pakistan
English
About me
Hey, I'm Sagar — a full stack developer who specializes in getting AI features into production, not just into a demo. I build the web app, mobile app, or backend around the AI layer (OpenAI, Claude), not the other way around, which is usually where things break for teams that bolt AI on late. 90+ projects, 5.0 rating, real companies. Stack: React, React Native, Node.js, TypeScript, Firebase, MongoDB, PostgreSQL. Send me your idea and I'll tell you honestly what it'll take to build it right.
Skills
Vasu Sagar
Offline •
Average response time: 1 hour
See my services
Cross-Platform Development
I will build your cross platform mobile app with react native and expo
Cross-Platform Development
I will build an ai powered mobile app with react native and openai
Portfolio
Work experience
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Full Stack Developer
Fiverr • Full-time
Feb 2022 - Present • 4 yrs 6 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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1-5 out of 92 Reviews
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fs5195
Germany
Great experience!
$400-$600
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5 days
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justbits
India
Ongoing collaboration
Great work. on time.
$100-$200
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5 days
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jramisa
United Kingdom
Ongoing collaboration
Excellent service and great communication. Would 10/10 recommend
$200-$400
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2 days
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mituchris
United States
Ongoing collaboration
Great work and quick turn around
$200-$400
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mituchris
United States
Ongoing collaboration
Quick turnaround, great communication, and the developer is very knowledgeable. Looking forward to continuing working with him
$50
Price
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