Pluspunten
LinkedIn's like a perfect little bubble. Everyone is super nice and friendly and the culture is great! Company really cares about the wellness of its employees, especially during COVID-19. Benefits are amazing. Engineers are empowered to be independent and make critical decisions. The company is pretty mature so you'll learn a lot working on very large scale projects. The culture also strongly encourages craftsmanship so you get to build things the right way without hacking around to meet deadlines.
Minpunten
Because LinkedIn is already such a big player, it faces similar problem as other big companies. Things are slower because there are more process and almost everything you touch affects a bunch of other teams so migration efforts become super challenging. But don't get me wrong, taking things slow is necessary and it's better in the long run. If you're used to more fast paced engineering culture, LinkedIn may not be the right place for you.