Middle Full-Stack Engineer (PHP, JS) with web3 knowledge in Upstaff

We are looking for a PHP Engineer to work on back-end development and optimization for our product - the crypto airdrop platform, which utilizes DApp and Web3 protocols.Technical Stack:Back-end - Native PHP.Front-end - JavaScript, CSS, Bootstrap 4, Jquery, Smart Contracts.DB - MySQL.Blockchain - Solidity, web3.jsThe ideal candidate will cover 70% back-end and 30% front-end parts.Team:CTO, Product Manager, CEO, Telegram ChatBot Dev (backend), QA, Designer, and 2 front-end engineers.What you will be doing:- Development and maintenance of the server-side components of software products.- Optimization and enhancement of the performance of backend systems.- Implement APIs to support the platform's automated generation of performance reports.- Apply version control systems and automated tests.- Enhance website pages.- Import new layout design.- Modify interactive pages.What we are expecting from you:- 3+ years of experience working with the PHP;- Experience with JavaScript, CSS, and JQuery.- Experience with MySQL database (optimization, high-load).- Bootstrap 4 (Knowledge of concepts such as d-none, row, col-4, etc.).- Experience in web3 projects will be a big plus.