These are bits of knowledge from my personal experience in startups: 1. Most of the stuff you write will not be used. 2. Product owners/sales people will chan

These are bits of knowledge from my personal experience in startups: 1. Most of the stuff you write will not be used. 2. Product owners/sales people will change their designs/expectations on a whim (get ready for it) and expect a quick turn around. 3. Be prepared for a revolving door of employees signing on, fizzing out or being dropped one day without ceremony. 4. Be prepared for work done to be valid when you committed it and for it to the wrong design when it finally got accepted into production. 5. Be prepared for some of the senior programmers to make bad choices for the company even if common sense says otherwise. 6. Be prepared for long hours if it is required. Your mileage will vary but it is experience that you can add to a CV and you'll learn if you like it.