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Yevhen – React, JavaScript, Typescript, experts in Lemon.io

Yevhen

From Ukraine (GMT+3)

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Front-end Web DeveloperMiddle
Hire developer
5 years of commercial experience
Banking
Blockchain
Cryptocurrency
Cybersecurity
Data analytics
Gambling
Gamedev
Dev tools
Lemon.io stats

Yevhen – React, JavaScript, Typescript

Yevhen is a Middle Front-End Web Developer with over three years of commercial experience. He's proficient in React and Typescript, knows JavaScript fundamentals quite well, and uses best practices to write clean, scalable, and good-looking code. Throughout his developer career, he has covered many responsibilities during the engineering process—from choosing technologies to building projects from scratch and directly communicating with consumers. Yevhen is a calm person with a can-do attitude, likes to get the job done, and exceeds expectations in the coding routine.

Main technologies
React
1 years
JavaScript
3 years
Typescript
1 years
Additional skills
HTML
Webpack
Gatsby.js
Jest
GraphQL
Redux
MobX
SCSS
Web 3.0
Styled-components
Lodash.js
CSS
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Full-stack Developer
Dec 2021 - Apr 20223 months
Project Overview

A rising startup, the main goal is data analysis for mobile game developers on both IOS and Android platforms. Main features:

  • high speed on billions of lines of data,
  • revenue predictions,
  • paying statistics calculations.
Skeleton
Skeleton
Skeleton
Responsibilities:
  • Creating both the main app and admin panel from scratch on the front-end side
  • New features integration, such as tables with custom sorting, draggable columns, and other tools
  • Implementing auth service both on the front-end and back-end side
  • Creating CRUD API methods for the data changing
  • Refactoring of the back-end side
  • Integrating with the new clients, providing custom users and config presets on the back-end side
Project Tech stack:
Typescript
React
MobX
Node.js
PostgreSQL
Redis
Front-end Developer
Feb 2020 - Dec 20211 year 10 months
Project Overview

The cryptocurrency platform is based on the ERC20, which mission was to provide fast and secure transactions with minimal fees. Very simple UI with powerful tools which satisfy all user demands.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Chose technologies and built the application from scratch
  • Implemented different ways of authorization through the different ETH vendors, such as Metamask, Coinbase, Fortmatic, etc
  • Implemented transaction support via an internal package
  • Covered with unit tests
  • Implemented new features
  • Fixed bugs
  • Covered demo
  • Built and deployed to the Firebase
  • Worked with the customer directly
Project Tech stack:
Typescript
React
MobX
SCSS
Webpack
Front-end Developer
Apr 2021 - Nov 20217 months
Project Overview

The goal of the product is to check the code base of customers' applications for various aspects of security vulnerabilities. Main features:

  • fast scans,
  • dashboards comparison,
  • big pressure stability.
Skeleton
Skeleton
Skeleton
Responsibilities:
  • Did the integration with Gitlab, Bitbucket, and Azure, configuration routing via Nginx
  • Implemented complex table support
  • Supported with development of an online code editor as part of the web application
  • Fixed code and package vulnerabilities
  • Prepared web application for customer demo and launch
  • Did code review
  • Migrated to the latest Mobx and React versions and refactoring, reconfiguration of the webpack for a better local development experience
  • Did the optimization of complex tables, bug fixes, implemented new features
Project Tech stack:
JavaScript
React
MobX
Typescript
Jest
Cypress
Front-end Developer
Dec 2020 - Apr 20213 months
Project Overview

An application for online banking, the mission of which is to provide a service for fast and convenient money transactions between Eastern European countries.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Developed the system from scratch for pre-building pages with data fetched from GraphQL
  • Implemented custom internationalization
  • Developed custom Gatsby plugins
  • Implemented new features by customer request technical support for the SEO team
  • Covered refactoring and optimization of the old code base, bug fixes, and style improvements
Project Tech stack:
JavaScript
React
Redux. Gatsby
Front-end Developer
Apr 2019 - Dec 20198 months
Project Overview

Gambling app for Canadian and Australian audiences. Authentic games, cryptocurrency acceptance.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • Created responsive UI and menus for gambling games
  • Supported migrating to the Micro Front-end architecture
  • Tested coverage with Jest
  • Supported implementing SSR
  • Implemented new features by roadmap and customer request
  • Fixed bugs and improved SEO optimization
Project Tech stack:
Typescript
React
Redux
Jest

Education

2019
Civil Engineering
Bachelor's

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