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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.
Proje No: 40062024
10 teklifler
Uzaktan proje
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10 freelancer bu proje için ortalama $7 USD/ saat teklif veriyor

Hello, {{{ I HAVE CREATED SIMILAR BEFORE AND I CAN SHOW YOU }}}} I HAVE CREATED SIMILAR BEFORE AND I CAN SHOW YOU. I have reviewed your requirements carefully and understood the project scope. I am a developer with 10+ years of experience in Solidity, Ethereum smart contracts, and full-stack blockchain applications. I will work step by step to deliver a secure, modular, and maintainable on-chain ecosystem that meets your token, NFT, and marketplace requirements. **** You may follow the project's development using the tracker. I am available for work 40 hours a week **** I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. WE WILL WORK WITH AGILE METHODOLOGY AND GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STORES. My approach includes: ERC-20 token creation with mint, burn, pause, and allocation features. ERC-721/1155 NFT minting with gas-efficient batch operations, on-chain royalties, and whitelist presales. Decentralized marketplace logic for fixed-price sales and auctions without third-party fees. Hardhat test suite, secure coding with OpenZeppelin libraries, and deployment scripts for testnet/mainnet. Concise documentation and walkthrough for ABI integration with your React front end. I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Awaiting your positive response. Thanks
$7 USD 40 gün içinde
7,2
7,2

Dear Southern California Cryptocurrency NFT Company, With over 57 successful projects under my belt, I am confident in my ability to assist in building the backbone of your on-chain ecosystem on Ethereum. My expertise in web development, issue fixing, performance enhancements, custom features, automation, and API integrations make me the ideal candidate for this project. To approach this project, I will first analyze your requirements thoroughly. Next, I will create a detailed plan outlining the steps needed to implement the ERC-20 token creation, ERC-721/1155 NFT minting, and decentralized marketplace features. Finally, I will deliver well-commented Solidity code, a Hardhat test suite, and deployment scripts for both testnet and mainnet. Let's discuss how I can help bring your vision to life. Looking forward to collaborating with you on this exciting project. Best regards, Naveen Kumar
$7 USD 10 gün içinde
6,0
6,0

✅✅✅Understood well what u want✅✅✅ Hello, Your vision for a modular, on-chain loyalty and utility ecosystem is exactly where Ethereum is heading, and this is the kind of infrastructure work I specialize in. I can support you with a clean, secure Solidity architecture that unifies ERC-20 token mechanics, NFT issuance, and a native marketplace without relying on third-party platforms or fee layers. My approach would be to design the system as well-isolated, composable contracts using OpenZeppelin standards: a configurable ERC-20 with mint/burn/pause and role-based access, paired with ERC-721 or ERC-1155 contracts optimized for batch minting, on-chain royalties (EIP-2981), and signature-based whitelist verification. The marketplace logic would live in dedicated contracts handling fixed-price sales and auctions with clear settlement paths, re-entrancy protection, and gas-aware storage patterns. You’ll receive well-commented Solidity code, a full Hardhat test suite covering edge cases, and deployment scripts for both testnet and mainnet. I’m comfortable working with NFT companies, loyalty token models, and production Ethereum deployments, and I’m happy to collaborate long-term as your ecosystem expands across multiple client brands.
$10 USD 40 gün içinde
2,5
2,5

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on PHP, JavaScript, Software Architecture, Metatrader, Ethereum, Solidity, Smart Contracts, Cryptocurrency Lets connect in chat so that We discuss further. Thank You
$5 USD 40 gün içinde
0,6
0,6

Start the proposal with: “Just finished a very similar [project type] that delivered [measurable result] for a client…” Then connect it directly to the client's project. Write the rest of the proposal focusing on: • Technical approach • Tools, frameworks, APIs •:Keep it under 150-200 words max. Here is the project: [PASTE JOB POST]
$5 USD 14 gün içinde
1,6
1,6

Hello there, I understand that you are in need of a team of Solidity engineers to build the backbone of your on-chain ecosystem for your cryptocurrency NFT company in Southern California. We aim to create and manage tokens for companies, focusing on token creation and management, NFT minting and trading, and a decentralized marketplace. Our approach involves developing an ERC-20 token for token creation and management, implementing ERC-721/1155 support for NFT minting and trading, and integrating in-contract fixed-price and auction logic for the decentralized marketplace. We will provide well-commented Solidity code, a Hardhat test suite, and a deployment script for testnet and mainnet. Core Deliverables: - ERC-20 token for token creation and management - ERC-721/1155 support for NFT minting and trading - Decentralized marketplace with fixed-price and auction logic Expertise & Portfolio: I'll share the portfolio with you in the DM. Kindly ping me there. My experience with Solidity and blockchain development ensures quality and smooth delivery. Invitation to Proceed: I’d be happy to discuss your project further and answer any questions. Best regards, Malaika
$5 USD 40 gün içinde
0,0
0,0

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