Pluspunten
You're exposed to a lot of technology, hardware including data center rackmount servers and networking equipment, the software used to run those systems, tools to mitigate problems and attacks, and can pick up a huge amount of experience in dealing with network security and data backup.
Minpunten
While they present themselves in appearances as a startup, they lack all of the flexibility and care of employees' well-being that a startup might otherwise have. Very strict and short lunch times, no flexibility with different working arrangements such as standing desks (this makes more sense when you might be working a 12 hour shift overnight), and the initial training leaves a lot to be desired. Communication is very poor, from management down to the support and development staff. Very little flexibility with working schedules.