Pros
Strong edge in hot area of market. Smart people. Creative colleagues who do some amazing work at a speed that few companies could match. Great R&D staff with true vision. Tons of promise to be a contender in the market. Some opportunity to try new things as long as your manager has your back.
Cons
Classic startup woes. CEO is a hothead who's more of a project manager than a leader, product gaps get in the way of growth, and big money spent on offices / off-sites while struggling with sales. Constant strategy shifts are hard to keep up with. HR team promoted alcohol and pizza parties heavily as the culture. Many are early in career & learning on the job, yet no job training and a lot of complaining and blaming when problems come up. A hot mess of a company.