Oleg Varaksin is a senior software engineer living in the Black Forest, Germany. He is a graduate computer scientist who studied informatics at Russian and German universities. His main occupation and "daily bread" in the last few years has consisted of building various Java-and JavaScript-based web applications based on JSF, PrimeFaces, Spring, REST, JavaScript, jQuery, Angular, and HTML5. Currently, he is working at Swiss Federal Railways on a new ticket webshop. Oleg is an experienced and passionate web developer and has been working with the Prime UI libraries from the beginning. He is also a well-known member of the PrimeFaces community, creator of the PrimeFaces Extensions project, and the author of the PrimeFaces Cookbook. Oleg loves JavaScript, new ECMAScript standards, TypeScript, Angular, PrimeNG, RxJS, and Redux architecture. He has a deep understanding of web usability and accessibility. Oleg normally shares the knowledge he has acquired on his blog. His Twitter handle is @OlegVaraksin.