Pros
Competitive Bay Area pay, great campus, excellent employee benefits, and accessible HQ in Alameda overlooking the water (close to OAK airport). In addition to a Winter Shutdown, they've added a Summer Shutdown, so it's a great time for employees to recharge. There are opportunities for growth and development if you are proactive and seek them out. In my time here, there have been changes and reorgs, but for good reasons and in line with the business's needs. I enjoy working here and have found a great community of colleagues. The company is also very heavily invested in community outreach and giving.
Cons
Exelixis is a 5-day onsite company, and for those wondering if it is enforced, yes, it is. That said, it's a modern, beautiful campus with a nice fitness center and a subsidized cafeteria. They offer commuter benefits and even carpooling programs among colleagues, in addition to a shuttle from the Peninsula.