I had an interview with one of the founders and it all went well. He was nice and made the right questions. He told me they will contact me the week after to let me know if I was selected for the next step of the process but they never did. I send a follow up email to him as well and I never got a reply from them. I consider that to be highly unprofessional and believe they should value the candidates time and efforts and at least give them an answer. It's okay not to be selected, but please, comunicate your decision to the candidates.