I run a cryptocurrency NFT company in Southern California and need a team of Solidity engineers to build the backbone of our on-chain ecosystem on Ethereum. We believe that all companies will eventually launch their own loyalty and utility tokens, we are looking for developers that can help create and manage tokens for companies. The contract will combine three core capabilities: • Token creation and management – an ERC-20 (or comparable standard) that lets us mint, burn, pause, and allocate tokens for rewards, liquidity, and governance. • NFT minting and trading – ERC-721/1155 support with gas-efficient batch minting, on-chain royalties, and signature-based whitelisting for presales. • Decentralized marketplace – in-contract fixed-price and auction logic so users can list, bid, and settle directly without third-party fees. I will supply artwork, metadata rules, and UI mocks; you deliver well-commented Solidity code, Hardhat test suite, and a deployment script that works on testnet and mainnet. Security best practices (OpenZeppelin libraries, re-entrancy guards, overflow checks) are non-negotiable. A quick walkthrough call and concise documentation that devs can follow to integrate the ABI into our React front end will complete the engagement.