Pros
LinkedIn as a company is a good place to be. Especially if you work in the US because you're close to the real leaders and the market is much more developed and open to your services. I have worked at LinkedIn Dublin and that's a total different story. The positive side of LinkedIn Dublin: Initially they could hire the best of the best. So real smart people to work with and learn from. However, this is changing as a lot of good people have left and the company is getting a bad reputation as an employer. Another plus is the free food. It's really good food. And there is a decent onsite gym you can use. I like it.
Cons
Let me repeat what I said at the start. LinkedIn US is a great place to be. I have worked at LinkedIn Dublin and that's a total different story. Here is why I left Linkedin Dublin: A cult like culture that nobody really likes and wants to admit. There is too much B.S. and empty buzzwords. For example as a sales rep they say you're evaluated on "leadership, leverage, results". That is a lie. When it comes to the evaluations they only look at results. Horrible sales territory. Linkedin is good at over hiring for specific countries because they know that certain individual sales reps will never make their quota. Ridiculous sales targets. As inside sales you have to bring in way over half a million dollar. The relationship with the field sales reps is close to hatred. Field reps stealing your accounts is a normal thing. And the worst part is that your managers in Dublin don't do anything about it. The field sales reps are generally of a lower quality than the inside sales people because Linkedin does not have a strong employer brand in most European countries outside of the UK. And in general senior leadership in Dublin is of a very poor quality.