Demyd G — Senior React Developer with Blockchain Experience

Expertise in Wallet and Web3 Integration, Front-End Web.

Last verified on July, 2023

Core Skills

Bio Summary

- Senior software developer with about 7 years of experience
- Web applications for crypto finance (including wallet for Ethereum using ether.js (deposit, withdrawal, staking operations) and web3.js (connect Metamask, get balance, withdraw and deposit tokens)
- Maintaining web applications with Front-end jQuery, Vue.js, React.js, React Native, Angular.JS, Angular 2+ and PHP Laravel, WordPress
- Hands-on experience of both working as a single developer and being a part of big Agile teams.

Technical Skills

Programming Languages	JavaScript, PHP, TypeScript
JavaScript Frameworks	Angular, AngularJS, jQuery, React, Vue.js
UI Frameworks, Libraries, and Browsers	CSS, HTML, jQuery, JSS, Material UI, SCSS, Styled components
JavaScript Libraries and Tools	Ethers.js, JSX, Mobx, React Hooks, React Native, React-Saga, React Testing Library, React Thunk, Recoil, Redux, RxJs, Styled components, Webpack
PHP Frameworks	Laravel, Yii
Databases & Management Systems / ORM	Firebase, MySQL, SQL
UI/UX/Wireframing	Adobe Photoshop, Sketch
Web/App Servers, Middleware	Apache HTTP Server, Nginx
Scripting and Command Line Interfaces	CLI
Virtualization, Containers and Orchestration	Docker
BlockChain and Decentralized Software	Ethers.js, Web3
Platforms	Firebase, WordPress
Version Control	Git
SDK / API and Integrations	GraphQL, RESTful API
QA, Test Automation, Security	Jest, JMeter, Postman, React Testing Library

EXPERIENCE

Front-end developer, Crypto finance platform

04/2021 – 02/2022

Web application for crypto finance. App gives people the ability to invest in minerals like iron, nickel, tin, gold using crypto tokens. I was taking part in developing a wallet for Ethereum using ether.js (deposit, withdrawal, staking operations) and web3.js (connect to Metamask, get balance, withdraw and deposit tokens)

Technologies: TS, React.js, Web3.js, Ethers.js, MobX, Recoil, Rxjs, Styled Components, HTML, SCSS, Webpack, REST.

Front-End Developer, Online Medical Web Store

04/2020 – 04/2021

Making markup, developing react modules from scratch, setting up and updating webpack, migrating to new react version, and implementing react hooks.

Technologies: HTML, CSS, Typescript, React (React Hooks), JSX, Redux, Webpack.

Full Stack Developer, Under NDA

12/2019 – 04/2020

CRM web application for a logistics company.
Technologies: PHP, Laravel, SQL, MySQL, TypeScript, GraphQL, SCSS, Webpack, React.
React Native application for managing Bluetooth devices, sending their location to CRM server and using this data later while calculation, metrics and etc.

Front-end Developer, Under NDA

05/2019 – 11/2019

Cryptocurrency application for managing your crypto assets. Working in a scrum team 2 front-end, 1 Back-end, 1 Qa, 1 PM.

Technologies: HTML, CSS, React.js, Redux, TS, Firebase, Jest.

Front-end developer, E-banking application

04/2018 – 05/2019

Web application for online banking. Implemented functionality related to buy/sell stocks as well.

Technologies: Javascript, React.js, Redux, RxJS, Redux, Styled Components, REST.

Fullstack Developer, Food Delivery App

07/2017 – 04/2018

Developing front-end of food delivery application, similar functionality to Uber eats. Team of 2 developers, 1 Front-end, 1 Full stack

Technologies: PHP, Laravel, AngularJS, JS, HTML, CSS.

PHP Yii Developer, Under NDA

01/2015 – 07/2017

Web application for booking doctor appointments. Working on back-end and front-end

as well.

Technologies: PHP, Yii, HTML, CSS, JS, jQuery, Postman, MySQL

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