Pros
ION makes some effort in standardising procedures and uniforming communication. If you like being threated like a machine in an assembly line, this is the place for you. Oh and machines don't catch COVID, so you can get back to the office.
Cons
It is my personal convinction that ION knows about the following and does not care about it. Please take it like the honest, personal opinion of a very frustrated employee who's sick of screaming into the void. This is not a Group. It feels to me like a predatory entity, acquiring all competition just to squeeze profit from it. They operate with such arrogance and without any space for debate that you just have to assume they are squeezing your company dry, engaging in a war of attrition in which employees have no opportunity to be heard. After the acquisition, a lot of people quit without being replaced. The company silently went into survival mode, communication stopped, while ION just kept demanding for more and more ,micro-managing everything and fixing nothing. Not surprisingly, the company is mostly losing senior and promising people, while retaining all the bad management and lazy employees. Some managers are looking forward to jump ship by forgetting whose decisions led to this mess, and starting vanity projects for visibility. Other managers just go along passing every imposition to their people without any explanation "because ION does not wish to explain". I hope someone will fine or take ION to court (maybe for the very dubious non-compete) because working here has impacted negatively my career, my self-esteem and my mental health. Unfortunately, no one will: resignation has settled in, and people have understood that there is no value in arguing with ION or breaking your back for them. On the technical side: when my company was bought by ION, it froze for 1 to 2 years. No hiring, no bonuses, no raises, no investments. People left and resources were redirected to "integration". So when you join ION you'll find years of bugs, outdated technology, horrible patches, and generally projects that went along without planning or direction for years.