Frontend Developer (React)

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 UsKyivstar.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 DoCollaborate 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 techniquesDesigning and implementing of an application architectureCode review and code quality controlWriting optimized code if neededQualifications And Experience NeededUnderstanding OOP and Functional programming design patterns3+ years of experience with development of web applicationProfessional experience with React JS (2+ years)Experience making interactive and performant web UIs with React JSExperience with state management using Redux / FluxStrong knowledge and experience with CSS: methodologies, tools, optimization, page renderingFluent knowledge of git and platforms (GitHub, GitLab)Experience work with hooks and using typescript architectureUnderstanding and usage REST, SOA conceptsUnderstanding of ES6/ES7/ES8 standardsUnderstanding of CI/CD (principles, instruments)A Plus Would BeExperience with high load projectsExperience with developing on Node.jsStrong understanding | usage of SOLID principles and software design patternsStrong understanding the design principles of distributed applicationsExperience with Docker containersAbility to setup required development environmentExperience with Linux-based OS, BashWhat We OfferOffice or remote — it's up to youRemote onboardingPerformance 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 partnersHealth and life insuranceWellbeing program and corporate psychologistReimbursement of expenses for Kyivstar mobile communicationWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.