I was interviewing for their Anaheim Location in California. It was a long, but a relatively easy series of interviews. Beware though the Co-Founder makes the final decision even if you get along great with the team and are very technically skilled--you may still not get the job. Please read my experience below! I was initially contacted by a recruiter, after submitting my resume, who asked me questions based on past experiences and typical HR questions. I was then scheduled for a technical phone interview with one of their web architects. The technical phone interview questions mainly focused on algorithm type questions (find unique values in array, etc.). After successfully completing the phone interview, I was then scheduled for an on site interview where I met with them team i was going to presumably work with and one of the co-founders. I first met with two members of the group, separately, where they asked a few technical questions (showed me PHP code and asked what it did), but they focused more in telling me about the group and making sure I would be a fit for their group. We got along great and I'm sure they would have agreed with me that I would have been able to fit in perfectly. I then finally met with one of their co-founders who asked me how a Hash Table is implemented and explained a little bit about the company's history. Afterwards I asked many questions about the business and then we got into the discussion of how I would fit in. He told me he was going to have me come in for one final interview to be considered for a position as a Release Engineer (which made no sense since I thought I was already being considered for a position with the group i just interviewed with). Ultimately he said that I would be considered for the other position as well. And right before I left he said that he has received really good feed back from the rest of the team and that I would be contacted for a final interview. A few days later, after waiting for my next interview to be set up, I got an email stating i was being rejected......How does somebody ask you to come for a final interview only to cancel on you and reject you later. Supposedly he said after thinking about it more he thought that I wouldn't have been a "good fit", even though I got along great with the team. My Technical skills also weren't the issue since he said that I was very intelligent and my motivation was impressive. Its sad because everything was going so well and I really liked the team there!!. Would have loved to work at SendGrid, but ultimately their Co-Founder thought differently. Oh well his LOST!!!!! :)