Pros
Super fun, start-up environment. Relatively lax atmosphere without micromanagement. Your peers are extraordinarily talented individuals. The owners are generous and approachable. The company was years ahead of the industry and has been insanely successfully. Because of the intense growth, promotions occur quickly and frequently. Upward mobility within the company is commonplace if you work hard and your work is noticed. It was a genuinely fun and exciting place to work and I got to work with some of the smartest people I've ever met. I can honestly say it was one of the best jobs I have ever had.
Cons
There is a major leaning curve here. I was an information technology major and thought I could just jump in and learn everything in a few weeks. I thought wrong. Even though it was fun and exciting there were long hours and very stressful client accounts. I worked primarily with automotive clients and maybe one or two retail companies. I learned an incredible amount about the industry in the year or so I worked there. They were doing very complicated analytics before anyone knew what analytics was. While I know the company appreciated my work I can't say that I ever felt my clients did. While I got a ton of invaluable real life experience I eventually took an in house automotive position that promised significantly more money and upside. Like the title says lets just say the grass isn't always greener. Leaving was definitely a mistake. The company has continued its upward trajectory and sitting on the sideline hasn't been great. The new job I took was way oversold to me and I the people I worked with at C-4 went on to management positions. I actually reached out to Mike and Justin when I realized I made a mistake and although they didn't give me my job back they wrote me a letter that helped me land what is basically my dream job. I am very greatful. While I got great experience and everything ultimately worked out for me I would say the worse thing was leaving and watching the success without me. It's pretty obvious after reviewing some of the other former employee reviews that I'm not the only one that feels that way. I think the difference between my five star and their one star review is that I realize that I made the mistake to leave. Life is full of lessons.