Blockchain & Web3 Development
Smart contracts, DeFi protocols, NFT platforms, and decentralized applications built by experienced blockchain engineers.
Global McClien's blockchain team has been building on Ethereum, Solana, and other major chains since 2017. We develop production-grade smart contracts with formal security audits, DeFi protocols with millions in TVL, NFT marketplaces, token launchpads, and enterprise blockchain solutions. Whether you're building the next DeFi protocol, a tokenized asset platform, or a private enterprise blockchain, our team brings the expertise to do it securely and efficiently.
What We Deliver
Everything you need, nothing you don't.
Smart Contract Development
Solidity and Rust smart contracts with comprehensive unit testing, gas optimization, and security audits.
DeFi Protocol Development
AMMs, lending protocols, yield aggregators, and liquidity management systems built for the DeFi ecosystem.
NFT Platforms
Custom NFT marketplaces, minting platforms, and generative collection deployments on Ethereum and Solana.
Token Development
ERC-20, ERC-721, ERC-1155 tokens with vesting, governance, and tokenomics engineering.
Web3 Frontend Integration
Wallet connection (MetaMask, WalletConnect), contract interaction, and Web3 UX with ethers.js or viem.
Security Audits
Smart contract security reviews against OWASP Blockchain Security Testing Guide and SWC Registry.
Why Choose Global McClien
- Battle-tested smart contract patterns from 50+ deployments
- Security-first approach with internal audit before third-party review
- Multi-chain expertise: Ethereum, Polygon, Solana, Avalanche, BNB Chain
- Gas-optimized contracts to minimize user transaction costs
- Ongoing protocol maintenance and upgrade support
How We Build Products That Win
A proven 6-step process refined over 10+ years and 200+ successful projects.
Discovery & Strategy
We deep-dive into your goals, audience, and market to map out the perfect product strategy.
UI/UX Design
Our designers craft intuitive, beautiful interfaces that users love and convert.
Development
Senior engineers build your product using modern, scalable technologies with clean code.
Quality Assurance
Rigorous testing across devices, browsers, and edge cases before any release.
Launch
Smooth deployment with zero downtime. App store submission and go-live support included.
Support & Growth
Ongoing maintenance, analytics, and iterative improvements post-launch.
Technologies We Master
Modern stacks for modern problems
Frequently Asked Questions
How much does blockchain development cost?
A basic smart contract costs $10,000–$30,000. A full DeFi protocol or NFT marketplace runs $50,000–$200,000. Security audits are separate and always recommended.
Do you perform smart contract audits?
Yes. We perform internal security reviews and can coordinate with top audit firms like Trail of Bits, OpenZeppelin, or Consensys Diligence for third-party audits.
Which blockchains do you develop on?
Ethereum, Polygon, Solana, Avalanche, BNB Smart Chain, Arbitrum, and Optimism. We recommend the right chain based on your performance, cost, and ecosystem requirements.