Pros
Great work and life balance because there is not much work, reason see below.
Cons
Barclays has a culture that doesn't care about personal growth and employee happiness. The entire management is plagued with such culture. The upper management cares about themselves than anything else. Fun fact, in one of the townhalls CEO came to stage and talked how recent Barclays stock plummet made him lost millions of dollars and vowed to bring the stock back to where it should be. 99.9% of people down there didn't give a **** because they have zero ownership about Barclays. The end result is the bottom level of the company structure is filled with incompetent people content with pay and work (or not work for the matter of fact). Everything moves at glacier pace with layers of bureaucracy. If you are in early of your career, regardless of your job (trader, IBD, developer, operations), and you want to learn and achieve something, Barclays is not the place for you.