# Apply on Upwork - Help needed for marketplace Smart Contracts

**URL:** <https://forum.openzeppelin.com/t/apply-on-upwork-help-needed-for-marketplace-smart-contracts/23836>\
**Category:** Developer Wanted\
**Created:** [February 1, 2022, 9:59pm UTC](https://forum.openzeppelin.com/t/apply-on-upwork-help-needed-for-marketplace-smart-contracts/23836 "2022-02-01T21:59:51Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![rhahn28](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/rhahn28/32/14597_2.png) [@rhahn28](https://forum.openzeppelin.com/u/rhahn28)\
**Post date:** [February 1, 2022, 9:59pm UTC](https://forum.openzeppelin.com/t/apply-on-upwork-help-needed-for-marketplace-smart-contracts/23836/1 "2022-02-01T21:59:51Z")

</div>

Need help completing a marketplace.sol and NFT.sol.

Please apply on Upwork here

> **[Smart Contract ERC721 and ERC20 Job](https://www.upwork.com/freelance-jobs/apply/Smart-Contract-ERC721-and-ERC20-Job_~016d92f971ff64737e/)**
>
> Need an expert blockchain developer to update ERC721 to do following:
> 1. Add metadata field that is hashed using keccak256
> 2. Limit all transactions to our ERC20 
> 3. Comply w/Openzeppelin Solidity Compiler Audit
> 
> Need an expert blockchain developer...

---

<div class="post-metadata">

**Author:** ![Peter\_Roy](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/peter_roy/32/10769_2.png) [@Peter\_Roy](https://forum.openzeppelin.com/u/Peter_Roy)\
**Post date:** [February 2, 2022, 4:31am UTC](https://forum.openzeppelin.com/t/apply-on-upwork-help-needed-for-marketplace-smart-contracts/23836/2 "2022-02-02T04:31:56Z")

</div>

Ping me telegram @PeterRoyHere