Startup life isn't for everybody. The pace is extremely fast and you have to be ready to pivot and move on a dime. It's definitely not a M-F, 9-5 work environment. While it's not unmanageable, expect to find yourself checking in "after hours" and keeping up to date on how things are going even when you're out of the office. This is pretty par for the course at most start ups, and the team here tries to cover for each other as much as possible, but it's important to keep in mind. Finally, the rate at which the company is scaling means that your day to day contribution could look very different 6 months from now than it does today, which is great for people who are looking to rapidly build new skills and expand their scope - but might be overwhelming for people who are more used to a slow and steady work environment.