Pros
I've been with IMC for almost 10 years. I love it so far. Right from the start, you'll be given a lot of responsibility. The flat structure of the organization makes it easy to get your point across and work effectively. Overall, I found it a very rewarding job. You end up working with extremely intelligent and enthusiastic people who are open to debate. This makes work fun. I've worked on a wide range of projects and the versatility of topics to work on is great. Trading moves at a rapid pace and so does IMC. The work/life balance is excellent though. There are frequent opportunities to visit other offices in Amsterdam or Sydney, or even transfer for a while. Next to this, you can get all the gear you would ever need to do your job, from top of the range macbooks to many 30" monitors. We get some great benefits: free breakfast and lunches, on-site massage therapists, frequent company outings and a yearly company weekends, next to the more standard 401k match, health and dental insurance, etc.
Cons
Live at IMC can be fast paced, so you do not always get the time to take care of every detail. Being good at time management and prioritization is very helpful