The interview process was very smooth and quick. It consisted of a phone screening, a coding test you can do at home and an onsite interview. The first step was a phone screening with a recruiter, discussing your experience, the interview process how long it should take ect. After that was a coding exam custom built by Hubspot. The exam looked like something that you'd do in the real world, and you were also able to use any packages and languages you want. You're given 3hrs to do it. I got feedback the next day and was offered a chance to come in and interview. The interview was done within one day ( took around 4hrs ) and consisted of 3 technical interviews and then an interview with the director of engineering, after each one they also discussed there role at Hubspot and were very open in showing me the technology they use and stuff they are working on. I was offered the option of using my own macbook for the it, which is great since it's a familiar setup, you're also able to lookup online resources like stackoverflow and google. When I arrived I was greeted by the recruiter who contacted me originally and was told who I'd be meeting and some pointers for the day. I was also told to make my self welcome to the drinks and food on offer, and to take a break anytime I needed it. The first one was a algorithm design question, was given input and desired output. I was asked about the time complexities each solution would offer (there was 3 solutions) and then had to code them out. The second was adding functionality to an existing jQuery project ( you could also chose a project implemented using plain js). After that was to apply styling to make it match a provided image. The third was questions around implementing different things in javascript. They touched on prototypal inheritance, string manipulation and returning a closure. Finally I talked to the director of engineering, who went through some of my past experience, and asked situational questions. After all of this was done I was given a tour of the office which was very pleasant, and was told I should be receiving feedback within one or two days. Two days later I received and accepted an offer. General Tip - All the question start out straight forward and get more difficult as you go along, and since your allowed reference different resources online, it's good to make sure your answering the questions in an environment that's easy to debug. For example I answered all the questions using chrome snippets which allowed me to stick a `debugger` statement in and step through the code and also gave me access to the console.