Curious Frontend Developer

We seek a front-end developer who has experience coding pages and building apps. We want to work with someone who explores technologies (a11y, performance optimization, PWA), someone who looks for better ways to solve problems and improve user experience. In order to apply send us a message to [email protected]. In addition to the cover letter and CV, please answer on these questions: How do you organize storing data on frontend? What are pros and cons of your approach? What makes a good user experience in your opinion, what is important? Please show us examples of your code.