Gecko Robotics Entry Level Software Engineer interview questions

I applied online, and was given a HackerRank coding challenge which I completed. 1 month after submitting the challenge, they invited me to a phone interview, which was a discussion of the the position and my background. After that, they invited me to their office for an in-person round. It included a coding question, a general interview, a design interview and a tour of their building. Reimbursement for travel was prompt and professional. It was a good experience overall, I guess the main sticking point is that they never sent me an email saying they were passing until 3 months after the interview. I knew within 2 weeks obviously.