Pros: Great people to work with.

Cons: Upper management is not respecting the privacy of feedback provided.

Pros: Collaborative atmosphere, with friendly people who generally enjoy their work. Small teams that have flexibility in what they do. People care about good code and software. Really good pay. Flexible hours (unlimited vacations). Food catered to work every day. Opportunities to work in many areas of engineering.

Cons: 'Work hard, play hard' attitude is sometimes taken too far. There is really never much pressure to do anything. If you are a competitive person who wants to move up, you might get frustrated with how things go here.

Pros: Interesting challenges exist to apply technology to innovate in the "local" space. We're way more than a "daily deal" company. My colleagues at Groupon are smart, driven, and fun. We're an "agile shop" organized into small feature teams, all doing focused work. We are expected to not just deliver software but design and innovate the product. We've just scratched the surface with the systems and products we'll build to achieve our goals. That means lots of opportunities to learn new things and work on different projects; new teams are forming all the time. Things are getting better and better for engineers. From an employee-driven "open transfer" policy (if you want to move teams, find a fit, and go for it), a per-engineer conference/training budget, and regular hack-a-thons, everyone is putting effort into making Groupon a great place to be an engineer.

Cons: It's a young company that grew really fast. Lots of things to get better at, like making decisions and communicating throughout the organization. With lots of small teams working independently, it's tough if you need to coordinate things. It's been a rough year with poor public press and a CEO change out.