Напиши текст вакансии для должности "Senior React.js Developer". Название компании: "IT_Selection". Расположение: Москва. График работы: Удаленная работа. Опыт работы: Более 6 лет. Ключевые навыки: 'JavaScript', 'Английский язык', 'HTML5', 'CSS', 'reactJS', 'Redux'

Dear applicants! Our client, International Software Development Company based in U.S. is searching for Senior React.js Developer. The product is SaaS, which allows multiple functions for safety and health insurance on high-risky industries. Is implemented as few services that perform different functions and integrated with each other.Brief project description:  Integration of existing enterprise-level system with 3rd party solutions; Developing of new functionalities; Moving some parts of the system to cloud.  Required skills (must have):  React.Js - 5+y; Redux - 3+y; Experience of working with PWAs (Offline loading, storage and native capabilities); Unit testing; js, css, html5; Upper intermediate (and higher) spoken English; Working on Senior or Lead position at least 1 year (longer is better); Ready to cover UK business hours (app. 12pm - 8pm, Moscow time).  Work conditions:  Distributed team: remote work or in any of existing offices: Ukraine (Kyiv, Rivne, Kharkiv), Tychy (Poland); 2-weeks scrum, 5-6 team members / team; Full-time (40 hours per week); Official contract: salary, sick-leave days, holidays, vacations.