Solidity
Development
Smart contract development and auditing.
We develop and audit Solidity smart contracts for DeFi protocols, NFT platforms, DAOs, and token systems. Our blockchain team has deployed 302+ smart contracts with a focus on security, gas optimization, and upgradeability patterns.
Cases
VK NFT Marketplace
Designed and developed the smart contract infrastructure and web frontend for VK's NFT marketplace — one of Russia's first enterprise-grade NFT platforms. Delivered ERC-721/1155 contracts, minting mechanics, royalty splits, and a creator dashboard integrated with VK's social graph.
DeFi Lending Protocol
Decentralized lending protocol with dynamic interest rates, collateral management, and automated liquidation logic — $8M TVL at peak, fully audited with zero critical findings on Ethereum mainnet.
Senior Solidity Developer → Swiss DeFi Protocol
Provided a senior Solidity engineer to a Geneva-based DeFi team for smart contract development and security hardening of a cross-chain yield aggregator with $25M TVL.
DeFi Yield Aggregator
Automated yield optimization protocol with smart contract vaults, multi-DEX routing, and auto-compounding strategies. Deployed on Ethereum and Polygon with $12M TVL at peak.
NFT Launchpad Platform
Full-featured NFT minting platform with allowlist management, Dutch auction mechanics, royalty enforcement, and secondary market integration — used by 50+ collection launches.
Cross-Chain Decentralized Exchange
DEX with cross-chain swaps via LayerZero bridge, concentrated liquidity pools, and on-chain limit orders. Live on Ethereum, Arbitrum, and BNB Chain with $30M daily volume.
DeFi Protocol Smart Contract Audit
Comprehensive security audit of a $50M TVL lending protocol — manual Solidity review, Slither/Echidna scanning, and economic attack analysis. Identified 3 critical issues including reentrancy and price manipulation vulnerabilities.
Cross-Chain Bridge Smart Contract Audit
Audit of a cross-chain bridge with $30M locked — discovered critical message validation flaw that could have enabled unlimited token minting before mainnet deployment.
Why Codifysoft
Senior engineers
Mid+ and senior specialists only
Fast scaling
Team expansion in 1–2 weeks
Flexible engagement
Hourly, fixed, or dedicated
Enterprise experience
Complex, high-load systems
Blockchain expertise
302+ contracts deployed
Full transparency
Direct access to your team
Need Solidity Engineers?
Let's discuss your project. We'll match you with the right team in days, not months.
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