You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Vasyl SumakVS

Vasyl Sumak

Senior Full-Stack Developer | Web & Mobile MVPs

€500/day
Siuntio, FI
15+ years

Average response time: 1 hour

About Vasyl

🚀 10x Developer | AI-Powered Vibe Coding Expert | 24-Hour MVP Delivery

I’m not just another developer.
I’m an AI-augmented development powerhouse delivering products at 10x the speed of traditional teams.

★ WHAT MAKES ME DIFFERENT

- Vibe Coding Master: Live coding with AI assistants (Claude, Cursor, GitHub Copilot)

- Mobile-First Excellence: iOS, Android, React Native, Flutter — fastest path to store launch

- Polyglot Engineer: C/C++, Rust, Go, Python, JS/TS, Solidity, Java, Swift, Kotlin

- 24-Hour Demo Guarantee: Idea today, working demo tomorrow

- AI Debugging Expert: I fix AI-generated code when others get stuck

✅ MY SUPERPOWER: AI + HUMAN EXPERTISE

- Precision prompt engineering

- Real-time debugging of AI-generated code

- Turning AI drafts into production-ready systems

- AI-optimized mobile build & deployment

📊 PROVEN TRACK RECORD

- 300+ projects, including 100+ mobile apps

- $2M+ in client value delivered

- 48-hour average MVP delivery

- 99.8% client satisfaction

- Apps with 1M+ downloads

🔧 TECH STACK

- Backend: Go, Python, Java, C#, Node.js

- Frontend: React, Vue, Next.js

- Mobile: Swift, Kotlin, React Native, Flutter

- AI Tools: Claude, ChatGPT, GitHub Copilot, Cursor

- Blockchain: Ethereum, Solana, DeFi

- Infra/DB: PostgreSQL, MongoDB, Redis, AWS, GCP, Docker, Kubernetes

💡 WHAT I DELIVER

- Live Vibe Coding sessions

- Same-day web or mobile prototypes

- Cross-platform apps with a single codebase

- App Store / Play Store–ready builds

- Clean, tested, maintainable code

🎯 PERFECT FOR

- Startups needing iOS + Android MVPs fast

- Enterprises requiring multi-language expertise

- Web3, crypto, and mobile wallet projects

- Teams where speed and quality matter

âš¡ READY TO START?
Send your idea and get a working demo within 24 hours.
No commitment — if you don’t love the demo, you pay nothing.

Let’s vibe and build. 🚀
  • Ukrainian

    Native or bilingual

  • English

    Fluent

Can work on-site
Siuntio (up to 50km)

Experience

  • Nordic Tech Consulting
    Senior Software Engineer
    December 2022 - February 2024 (1 year and 2 months)
    Helsinki, Finland
    Led the development of blockchain and AI-powered solutions for DeFi and enterprise clients. Architected microservices with Go and Kubernetes. Implemented ML models with Python/TensorFlow. Mentored junior developers in AI pair programming and modern practices.
    Blockchain artificial intelligence Rust Solidity DevOps
  • TechVibe Innovations
    Full Stack Developer
    October 2017 - August 2020 (2 years and 10 months)
    Tallinn, Estonia
    Built web and mobile applications for small to mid-sized businesses. Created APIs and real-time features with Node.js, React, and WebSockets. Developed mobile apps with React Native for both iOS and Android. Established automated testing, reducing bug reports by 40%.
    React.js Node.js React Native Websocket Test Automation
  • SoftLogic Solutions Pty Ltd
    Junior Software Developer
    August 2013 - March 2015 (1 year and 7 months)
    Kyiv, Ukraine, 02000
    Worked on desktop applications for inventory management and logistics. Developed cross-platform apps with C++ and Qt. Integrated APIs for third party logistics providers. Migrated legacy Pascal systems to modern C++ architecture.
    C++ Qt API Desktop Applications Legacy Code Migration

Recommendations

Be the first to recommend Vasyl

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Bachelor's degree
    APEPS department of Igor Sikorsky Kyiv Polytechnic Institute
    2012
    Bachelor's degree

Certifications

Skill set

Categories