Senior React JS Developer

We are looking for an experienced React Front End Developer to join our team. Your main job: implement new exciting features to our SaaS product and optimize features for usability and performance. Main responsibilities are: Improving our main SaaS product (including the React-based mobile driver application) Implement exciting new features (like real-time vehicle tracking, ETA updates and continuous planning) Optimize features for usability and performance Interact with product owners and designers to create new and update existing features Work with back-end developers and QA engineers to deliver the overall solution Ensure everything works correctly through testing, debugging and troubleshooting Evaluate new technologies to be used in different projects BS / MS in Computer Science or equivalent 4+ years of previous working experience as a front end developer Significant hands-on experience with HTML5, CSS3, Javascript, ES6 Ability to build scalable web applications using ReactJS, Redux, Material-UI libraries and other front end components Strong knowledge of REST APIs and WebSockets Familiarity with code versioning tools Good understanding of back-end infrastructure Ability to write clean and well-documented code Willingness to learn and upgrade your skills in a motivating environment Strong ability to communicate in English both verbal and written We heavily leverage: Amazon AWS's serverless technologies and microservices for our front-end, back-end, and mobile apps (like Lambda @ Edge and CloudFront) GitLab and GitLab's CI / CD features (for automatic build, test & deployments) OpenStreetMap with LeafletJS for all fundamental mapping requirements WebSockets for real-time information sharing across different products Google's Material Design system so we can focus on the best possible UX and performance