// smart contract development
Smart Contracts Built Right the First Time
Web3 DAO Agency builds secure, audited smart contracts for DeFi protocols, NFT marketplaces, DAOs, and enterprise blockchain applications. Every contract goes through internal security review before external audit.
// what we build
Smart Contract Services
Custom Smart Contracts
ERC-20 tokens, ERC-721/1155 NFTs, staking vaults, liquidity pools, governance contracts. Built with OpenZeppelin libraries for security best practices.
DeFi Protocol Development
DEXs, lending protocols, yield optimizers, options markets. We handle contract architecture, security, and testnet launch.
Smart Contract Audits
Internal security review on every contract. We coordinate with specialist audit firms for enterprise deployments handling significant value.
Upgradeable Contracts
Proxy patterns (UUPS, Transparent) for future-proof contracts. Fix bugs, add features, improve without redeploying.
Gas Optimization
Reduce transaction costs via assembly, storage packing, and algorithm optimization. Every optimization tested and benchmarked.
Multi-Chain Deployment
Deploy the same contract to Ethereum, Polygon, Arbitrum, Base, Solana, or TON. Bridge integrations and cross-chain messaging included.
Our Process
01
Discovery
Free 30-minute call. We ask about use case, token economics, security needs, and timeline.
02
Architecture
Technical spec with contract architecture, deployment plan, and fixed-price quote.
03
Build & Review
Weekly demos. Internal security review before external audit. Hardhat + Foundry + Slither.
04
Audit & Deploy
Coordination with audit firm. Testnet launch. Mainnet deployment. 30-day support included.
Frequently Asked Questions
What language do you use to write smart contracts?
Solidity for Ethereum and EVM chains (Polygon, Arbitrum, Base). Rust for Solana. We also support newer languages like Vyper and Cairo for specific use cases. We choose based on your target blockchain and security requirements.
What happens if we find a bug after deployment?
If the contract is upgradeable, we deploy a fix immediately. If not, we coordinate an emergency response (pause functions, migrate liquidity). This is why we recommend upgradeable contracts for DeFi and other high-value applications.
How do you ensure contract security?
Internal security review by experienced engineers (threat modeling, code review, attack surface analysis). We use Hardhat, Foundry, and Slither for automated testing and static analysis. External audit by specialist firms for production deployments. No contract ships without all three.
Ready to Build Smart Contracts?
Free discovery call + fixed-price quote within 24 hours.