Hiring a Jsoup in Java developer is beneficial because they can efficiently extract and manipulate data from HTML documents, a crucial task in web scraping projects. They can parse HTML to the same DOM as modern web browsers do, ensuring accuracy. These developers can also help clean user-submitted content against a safe white-list, preventing cross-site scripting (XSS) attacks. Their expertise enables them to navigate parsed HTML with a convenient API, handling cookies, and managing HTTP connections. Thus, their skills can enhance your web-based projects by providing effective data extraction and security.