You will get help to build your startup MVP and help you launch fast
Project details
Have a startup idea? Let's turn it into a working product fast! I specialize in building MVPs that help founders validate ideas and get to market quickly.
My MVP approach:
1. Understand your core value proposition
2. Identify must-have features (cut the rest)
3. Build fast, iterate faster
4. Launch and get real user feedback
What you get:
• Working product (not just mockups)
• Clean, scalable codebase
• Ready to grow with users
• Investor-demo ready
I've built MVPs for fintech startups, health & wellness apps, e-commerce platforms, social networks, B2B SaaS products, marketplace apps, and EdTech platforms.
Tech stack: React Native (iOS + Android), Next.js (Web), Node.js backend, PostgreSQL database, Modern cloud hosting.
Why work with me: 50+ MVPs delivered, Startup experience (I get the urgency), Fast turnaround, Technical co-founder mindset, I'll tell you what NOT to build.
Let's build something people want!
My MVP approach:
1. Understand your core value proposition
2. Identify must-have features (cut the rest)
3. Build fast, iterate faster
4. Launch and get real user feedback
What you get:
• Working product (not just mockups)
• Clean, scalable codebase
• Ready to grow with users
• Investor-demo ready
I've built MVPs for fintech startups, health & wellness apps, e-commerce platforms, social networks, B2B SaaS products, marketplace apps, and EdTech platforms.
Tech stack: React Native (iOS + Android), Next.js (Web), Node.js backend, PostgreSQL database, Modern cloud hosting.
Why work with me: 50+ MVPs delivered, Startup experience (I get the urgency), Fast turnaround, Technical co-founder mindset, I'll tell you what NOT to build.
Let's build something people want!
Programming Languages
JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$49
|
Standard
$149
|
Advanced
$249
|
|---|---|---|---|
| Delivery Time | 10 days | 14 days | 21 days |
Number of Revisions | 2 | 3 | 5 |
Design Customization | - | ||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
Frequently asked questions
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DS
David S.
Jun 5, 2026
Mobile App Development for Android and iOS
Sergei has been terrific to work with. He has been able to problem solve when issues arise and had some great ideas to help shape the outcome of the project. I will happily continue working with Sergei on this project, and future projects. Sergei has been someone that can problem solve, bring fresh ideas to the table and holds himself accountable for the work he does.
IK
Igor K.
Jan 23, 2026
Simple Task Tracker App
Sergei was fantastic to work with! He delivered the task tracker app on time, with excellent quality and attention to detail. His proactive communication, clear explanations, and smart recommendations made the whole process seamless. The code is clean, well-structured, and maintainable. I truly appreciated his initiative and professionalism—highly recommend for any React Native project!
About Sergei
Full-Stack Developer | Web & Mobile Applications | React Native
83%
Job Success
San Francisco, United States - 2:33 am local time
In the past year I've shipped 5 products end-to-end:
• ChekBack - a receipt-cashback app
• PhotoOffice - an AI passport-photo service
• ChessTourism - a chess-tournament platform
• Pluto - a field-service management system for home-service companies
• MotoSocial - a social network for motorcyclists
Each one went from concept to deployment, including auth, payments, integrations, and infrastructure.
Why clients work with me:
• US-based, real-time overlap with your business hours
• Native, clear English on calls and in writing
• Senior delivery - I ship working software, not just plans
• I stay with you until your app is published - I never leave you alone with your issues or concerns
• Warranty after delivery - if something breaks on my work, I fix it, no extra charge
Core stack: React, React Native, Next.js, TypeScript, Node.js, PostgreSQL.
Also: Python (FastAPI/Django), Expo, Redis, AWS/Hetzner/Cloudflare, CI/CD, REST & GraphQL, CRM and third-party integrations.
Best fit for: founders and startups who need an MVP or full product built right, the first time.
Send me your idea and I'll reply with a rough scope and timeline. No charge.
Steps for completing your project
After purchasing the project, send requirements so Sergei can start the project.
Delivery time starts when Sergei receives requirements from you.
Sergei works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Planning
Review your idea, define core features, and create project roadmap
Development & Testing
Build MVP with core features, run tests, and iterate based on feedback