Pros
The company really values everyone's opinions. They know that developers have technical insights that managers won't, and respect devs' comments appropriately. "Rational workplace" is one of the core values, and is very obvious throughout the company: the reasons for decisions are generally public, and even in the exceptional cases managers will be happy to explain in private. MathWorks has a huge concern for software quality and stamping out bugs, with the attitude that everyone can contribute. Developers can be promoted to management but can stay as senior developers with no management responsibilities if they prefer. Salary increases above inflation every year even during the recession.
Cons
The company's not keen on part-time working or working from home. They have a lot of processes and practices, some of which are pretty heavyweight: development philosophy is not very "agile".