Pros
Williams has a positive reinforcement culture that tends to focus on the rewards. Performance reviews and feedback are constructive and are never really punitive. Competent engineers are treated with the utmost respect and their opinions and ideas are valued regardless of age or experience level. The employees in general are treated an indispensible assets management will not hesitate to explain how important your work is to the organization and will give ample credit and praise when they are due. Professional growth and advancement exists but requires patience. The atmosphere is very relaxed and work-life balance is never an issue. There is ample flexibility in schedules, workloads, etc.
Cons
Management may be too easy on employees and the culture may be too relaxed to get the necessary work done and adequately compete against more aggressive competition. Growth projects are few and far in between - risk aversion is the predominant attitude here. The conservative solution more often than not wins out over better solutions and ideas. This is not a company for Type A personalities - they may find the culture and the people frustrating. Employees do work in cubicle farms so if you're on the phone with a recruiter, better speak very softly.