Sudheer Jonna was born in Nellore, India. Currently, he works as a senior software engineer in Singapore. He completed his master's degree in computer applications from JNTU University. In the past few years, he has worked on building various Java and JavaScript web applications based on JSF, PrimeFaces, Struts, Spring, REST, jQuery, Angular, React, and VueJS. He has also worked on many JavaEE and API development technologies, such as JPA (Hibernate), EJB, GraphQL, and Sequelize. He is the founder of GeekoTek company and is a longtime JSF and Prime products expert. He is also a project member of the PrimeFaces, PrimeFaces Extensions, and PrimeNG open source projects. He is the author of three other Packt books, titled Learning PrimeFaces Extension Development, PrimeFaces BluePrints, and PrimeFaces Theme Development. He has worked as a technical reviewer on a few books. He is a regular speaker, trainer, reviewer, blogger, organizer, and active member of public forums. He is interested in R&D on the latest technologies.He shares his knowledge through his personal website. You can follow him on Twitter with the handle @SudheerJonna.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.
