Depending on your personality, if you're looking for a culture of micromanagement, very defined roles and strictness, it may not be the place for you. Despite having clear goals and regular check-ups, or chance to discuss with anyone in the team, I never felt my hours (but rather my results) are counted. Given the start-up environment, taking initiative (on top of all the guidance provided) is expected. Depending on the role, you may need to vary the standard 9-5 day to discuss with team members around the world, but it was never a compulsory aspect, should anything come up.