Hello, my name is Sumit and I am a skilled developer with 3+ years of experience in blockchain technology, specifically NFT Marketplace development, crypto coins exchange development, ICO & IDO development with created token (coin), smart contracts (solidity, truffle framework) languages - React.js, Node.js, C#/C++, Objective C, Swift , Golang , Unity and Hyperledger.
I understand that you are looking for someone to modify your existing blockchain project on Ethereum that involves both front-end and back-end changes to enable sending submitted and task completed messages to registered mobile numbers. My expertise includes developing both Android & iOS applications as well as React Native apps. Additionally I have experience working with JavaScript & AngularJS. This makes me well-suited to assist you with your project requirements.