“Support in answering ad-hoc requests for information, comment and evaluation from ministers” doesn't sound a lot like the work involved in "advertising prisoner officer jobs." It reads more like: "Desperately trying to put a positive gloss onto whatever thing Raab has decided to be a complete arsehole about today."
https://www.mirror.co.uk/news/politics/dominic-raab-blows-320000-pr-28796832
‘Free money from HMRC’: firms cash in on questionable Tory tax credits