<prompt> Human: Like the title says - Ive been offered a role at a startup, and am considering leaving behind the large company Im at now. What changes should I expect to see going into a newer, smaller, younger company culture? For those that have worked in startups, what did you like about it? Are there any red flags to lookout for? Is burnout a big concern to be wary of? EDIT: Seems I missed a crucial detail of startup stage! Based on what I have learned through the interview process and the position of the product within the market, I would say this company is in the Growth and Expansion phase.  <response>: If it really is a startup, be prepared to sink. Most do. Ive had to resurface several times after going down with the ship, and its a lot less painful if you have a contingency.The biggest red flag I can tell you is, the second sales prowess gets confused for leadership or marketing ability, get out as fast as you can. Salesmen are essential to a startup, but the really good ones tend to have an excessive gamblers streak that will sink you if left unchecked. 