Pros
Beautiful campus in Oro Valley, northern Tucson, with the Catalina mountains as a backdrop. Many of the younger employees are adventurous and athletic and participate in cycling and hiking and cross fit. Ventana cares about its employees and offers a lot of benefits. Being owned by Roche, there are many opportunities for advancement or relocation, and even just movement within the Tucson location. There are quarterly staff meetings and other events which are catered. The campus is smoke-free! (although this doesn't stop many of the employees from smoking on the sidewalks) and Ventana's management does a lot to promote good health, being a company whose motto is to improve the lives of cancer patients everywhere.
Cons
The largest complaint I had was how long it took to push a project through to completion. A lot of this was caused by implementation of Roche policies after the acquisition, and some is caused by a lack of communication between departments, which is a bit baffling when one considers the number of meetings which take place. These issues are ones which I believe plague many larger companies. Ventana certainly continues to make efforts to fix the procedural problems. There are also some issues with using old technology and re-implementing designs which had flaws in the first place, without spending more time and resources for innovation.