Sylvain Coulomb
Full stack software developer with expertise in web3 technologies. I help businesses build modern web applications, integrate blockchain solutions, and optimize performance for better user experience.
Remote first • Available for projects and monthly retainers.
Services
MVP sprint
Complete development of minimum viable products for both traditional web applications and Web3 projects.
- Full stack web application development
- Blockchain and smart contract integration
- Modern React/NextJS frontend development
- Database design and API development
- User authentication and security implementation
Web3 integration
Seamless integration of blockchain technologies and smart contracts into existing applications.
- Wallet integration (MetaMask, WalletConnect)
- DeFi protocol integration
- NFT marketplace development
- Web3 authentication systems
Web performance optimization (React/NextJS)
Optimize your React and NextJS applications for better performance, SEO, and user experience.
- Code splitting and lazy loading implementation
- Bundle size optimization
- Server-side rendering optimization
- Core web vitals improvement
Monthly retainer – maintenance & velocity
• 40 remote development hours / month
• End-of-month report: hours used, tasks shipped, next steps
• Critical issues: response under 24h (business days)
• Unused hours roll forward 1 month
€4 000 / month
Pause or cancel anytime with 15 days notice. zero lock-in.
Need a different hour package? Let’s talk →Expertise
Full Stack Development
End-to-end web application development using modern technologies like React, NextJS, and Node.js.
Web3 & Blockchain
Build decentralized applications, integrate smart contracts, and create seamless Web3 user experiences.
Performance Optimization
Optimize web applications for speed, SEO, and user experience with advanced React and NextJS techniques.
Previous Clients
