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I will develop secure and optimized smart contracts in solidity
Blockchain and AI Software Developer
Cowchain is a full-cycle blockchain development company with 60+ Web3 engineers, designers, and architects across Europe. We specialize in smart contract development, DeFi protocols, launchpads, Layer...
Vetted by Fiverr Pro
Mykhailo was selected by the Fiverr Pro team for their expertise.
Vetted for
Blockchain Development & Solutions
About this Gig
Vetted Pro
I am a professional Solidity developer specializing in building, auditing, and deploying smart contracts for DeFi, NFT, DAO, and Web3 projects. My focus is on writing secure, gas-optimized, and production-ready code that meets industry standards.
What I can deliver:
- Custom ERC-20, ERC-721, ERC-1155 tokens
- NFT minting, whitelist, airdrop & marketplace logic
- Staking, farming, liquidity pools & governance systems
- DAO & multi-signature wallets
- DeFi protocols (DEX, lending, yield farming)
- Cross-chain compatibility (Ethereum, BNB, Polygon, Arbitrum, Optimism, Avalanche)
I always use OpenZeppelin, security patterns, and unit testing to ensure reliability.
Why choose me?
- 3+ years of Solidity & Web3 experience
- Delivered multiple DeFi & NFT solutions for startups
- Clean, well-documented source code
- Transparent communication & ongoing support
I will transform your blockchain idea into a secure, scalable, and fully functional dApp ready for mainnet or testnet deployment.
Keep your assets and information safe
Cryptocurrency services focus solely on developing and programming. Never share sensitive information or private keys with others.
My Portfolio
Other Blockchain Development & Solutions Services I Offer
FAQ
Do you provide full source code?
Yes, all packages include clean and well-commented Solidity source code.
Can you also deploy my smart contract?
Absolutely. I can deploy your contract on Ethereum mainnet, testnets, or EVM-compatible chains (BNB, Polygon, Avalanche, Arbitrum, Optimism).
Do you use OpenZeppelin libraries?
Yes, I follow industry standards and best practices, including OpenZeppelin, to ensure security and gas optimization.
Can you audit or review my existing smart contract?
Yes, I offer audit/review services with detailed reports and recommended fixes.
What if I need a custom feature not listed in the packages?
No problem — just message me with your requirements and I’ll create a custom offer.
Do you also build complete dApps with frontend?
Yes, I can integrate smart contracts with frontend (React, Web3.js, Ethers.js) if requested.
