Напиши текст вакансии для должности "Senior Frontend Developer". Название компании: "Jaxel". Расположение: Санкт-Петербург. График работы: Удаленная работа. Опыт работы: От 3 до 6 лет. Ключевые навыки: 'JavaScript', 'Git', 'Sass', 'Less', 'HTML', 'React', 'Bootstrap', 'Jest', 'Mocha', 'Chai', 'React-Vis', 'ChartJs', 'Web API', 'UX'

What You’ll Do:  Build new features and capabilities for the Web UI Collaborate with UX/UI designers to incorporate visual design into functional web pages Implement integrations with backend services Write optimized code for maximum speed and scalability Ensure a sufficient level of code quality Build reusable templates, widgets, and code Troubleshoot coding issues and bugs Review code and collaborate on pull requests from your team members Participate in user stories and tasks estimation, refinement, and planning Participate in demos for stakeholders  What You&#39;ll Need:  3+ years of professional front-end development using React, HTML, CSS, and JavaScript with focus on SPAs Experience with CSS extensions (e.g., Sass, Less, Bootstrap) Experience with build tools for JavaScript (e.g., Grunt, Gulp, Webpack) Knowledge of Test-driven development, integration tests (Jest, Mocha, Chai) Experience with libraries for graphical visualization of data (e.g., D3.js, React-Vis, ChartJs) Web API programming experience (e.g. REST, JSON, XML) Basic networking knowledge and Linux console familiarity Experience with version management systems such as Git and documentation systems like JSDoc Experience building reusable UX components or libraries Understands how to optimize the delivery of code and assets to a browser or device Proficient in a broad range of software design approaches and common UX patterns.  What We Offer:  Competitive salary Comfortable working in a fast-paced, results-oriented environment VHI Paid holidays and sick days Remote work opportunity Remote workplace setup Comfortable work in your local time zone Flexible work schedule Professional growth and development Paid trips to professional conferences Multicultural working environment