Serhii R. — Front-End JavaScript Software Engineer

Expertise in Front-End Web, React Developer.

Last verified on April, 2025

Core Skills

Bio Summary

- 7+ years IT professional in front-end web development in the field of web-oriented applications for startups, midsize businesses, and large enterprises from various industries.
- Expert in React.
- Follow React updates.
- Good knowledge of TypeScript and JavaScript. Have fully and deep understanding of UX/UI design implementation into HTML layout.
- Experienced in different approaches, front-end engineering principles, and concepts.
- Knowledge in functional programing, service-based fronted development, OOP based on prototypes, Unit testing (TDD).
- Upper-intermediate English
- Available ASAP

Technical Skills

Programming Languages	JavaScript, TypeScript
JavaScript Libraries and Tools	ES6, Gulp.js, React Bootstrap, Redux, Vuex, Webpack
JavaScript Frameworks	GatsbyJS, jQuery, Next.js, React, Vue.js
UI Frameworks, Libraries, and Browsers	jQuery, Material UI, Pug, React Bootstrap, SASS, SCSS
Databases & Management Systems / ORM	Liquibase, MongoDB, MySQL, PostgreSQL
SDK / API and Integrations	GraphQL, RESTful API
Platforms	Shopify

Work Experience

Development Team Lead

04/2020 - Present
Description:Development of web applications on React, Redux, Next.js, Gatsby.js. development of marketplaces on Shopify using Liquid, Gatsby, etc. I am mentoring a new employee, conducting interviews and reviewing code. Became the team leader of the company in 4 months

Front-End Developer, Exsy

09/2019 - 04/2020
Description: Development of sites and applications, both in React and jQuery. In my work I used PUG, React, Redux, React Bootstrap, Material UI.

Front-End Developer, Hexide Digital

05/2019 - 08/2019
Description: Development of sites of varying complexity, working with SASS, SCSS, GULP, Webpack, Vue.js, Vuex, PUG

Front-End Developer, Turboinsta

11/2016 - 05/2019
Description: Maintaining the company's sites, making edits, integrating with CRM (Amo CRM), optimizing the speed of work from sites. The work was carried out with the SASS preprocessor, the GULP package builder, using the BEM methodology.

Freelance

2014 - 2016,

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