Frontend Developer (React)

Kyivstar

All Remote permanent

Posted: April 1, 2026

Job Description

Kyivstar.Tech is looking for a Frontend Developer (React) to join our Product Development Team. The role has all the advantages of working in a product team — versatile projects, plenty of independence, chance to influence the direction of the development and opportunity to grow with the role.

About us

Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City. We are a subsidiary of Kyivstar, one of Ukraine's largest telecom operators.

Our mission is to change lives in Ukraine and around the world by creating technological solutions and products that unleash the potential of businesses and meet users' needs.

Over 600+ KS.Tech specialists work daily in various areas: mobile and web solutions, as well as design, development, support, and technical maintenance of high-performance systems and services.

We believe in innovations that truly bring quality changes and constantly challenge conventional approaches and solutions. Each of us is an adherent of entrepreneurial culture, which allows us never to stop, to evolve, and to create something new.

What you will do::
• Collaborate with Web Dev Team and Head of Technology in real and interesting product tasks (support 30% and development 70%)

• Selection and implementation of the necessary tools, technologies, and techniques

• Designing and implementing of an application architecture

• Code review and code quality control

• Writing optimized code if needed

Qualifications and experience needed: :
• Understanding OOP and Functional programming design patterns

• 3+ years of experience with development of web application

• Professional experience with React JS (2+ years)

• Experience making interactive and performant web UIs with React JS

• Experience with state management using Redux / Flux

• Strong knowledge and experience with CSS: methodologies, tools, optimization, page rendering

• Fluent knowledge of git and platforms (GitHub, GitLab)

• Experience work with hooks and using typescript architecture

• Understanding and usage REST, SOA concepts

• Understanding of ES6/ES7/ES8 standards

• Understanding of CI/CD (principles, instruments)

A plus would be: :
• Experience with high load projects

• Experience with developing on Node.js

• Strong understanding | usage of SOLID principles and software design patterns

• Strong understanding the design principles of distributed applications

• Experience with Docker containers

• Ability to setup required development environment

• Experience with Linux-based OS, Bash

What we offer::
• Office or remote — it's up to you

• Remote onboarding

• Performance bonuses for everyone (annual or quarterly — depends on the role)

• We train employees: with the opportunity to learn through the company’s library, internal resources, and programs from partners

• Health and life insurance

• Wellbeing program and corporate psychologist

• Reimbursement of expenses for Kyivstar mobile communication

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