Pros
TCG is really great. It's a unique, smart, and fun group of people. Management is serious about fostering employee happiness. The company offers a ton of benefits and perks. Relatively standard ones include good healthcare options, a nice annual training budget / other opportunities for professional development, and transportation benefits including reimbursement for bicycle maintenance if you are a bike commuter or new shoes if you walk to work. More unusual benefits include a monthly budget for group extracurricular activities that employees can suggest and plan themselves, periodically receiving unexpected gifts in the mail, and a company sponsored bowling league. The teleworking policy is extremely flexible provided you're meeting the client's needs. This is a huge benefit for me. Most importantly, it's a community of serious professionals who I continue to learn from but who are also fun to hang out with. I'm not planning to leave anytime soon.
Cons
Nothing significant. I've heard there may be limits on which US states an employee can reside in, which could be an issue if an employee living in the DC region wanted to move away. But I'm sure the company would work to find a solution if at all possible.