I found their job posting online and was emailed a coding challenge a few days later. You were given three hours to complete the following problem: You must hit a unique api to receive json data, modify and analyze the data, and then generate json in a specific format and post the data back to a different url. If the data was formatted correctly it responded with a 200 and you were told to zip up your code and upload it. After the coding challenge I was asked to schedule a phone screen with a recruiter. They asked common questions about my experience, why hubspot, why ____, etc. At the end of the phone screen I was told the next step if I make it will be a final round on site interview, and that they will let me know of their decision in a week or so. I ended up getting to the final round interview. It was four parts. First part was a a tour of their office, second was a technical interview with a CS question about n-grams that could be programmed in any language of my choosing. The third interview was half behavioral half javascript specific, focusing on prototype inheritance, closures, etc. The last section was a wrap up about my interview experience and any suggestions, salary expectations, other outstanding offers, etc. A few days later I was given a phone call and given an offer that exceeded my expectations