Smart Contract Developer for Token + Presale System (ETH / USDT Support)

We’re looking for an experienced smart contract developer to build a token contract and a presale contract with multi-stage pricing and post-sale claim features.
The project will run on Ethereum, supporting both ETH and USDT payments.

Key Requirements

ERC-20 token development (standard token with safety checks)

Presale contract with:

Multi-stage pricing (auto stage switch by time or amount sold)

Claim system after presale ends

Liquidity lock and initial liquidity injection on sale completion

Support for ETH and USDT contributions

Deployment scripts

Unit tests for core logic and re-entrancy safety

Clean, secure coding (no unsafe external calls)

Workflow

• Code: Implement clean, gas-efficient ERC20 and presale logic
• Tests: Provide comprehensive Hardhat/Foundry tests covering core and edge cases
• Deployment: One-command script to deploy to testnet/mainnet with clear README instructions
• Handover: Short guide explaining where to plug in tokenomics and how to verify on Etherscan

I’ll review commits regularly, so well-commented code is important.
If you’ve previously built presale contracts or have audit-verified work, that’s a big plus.