Everything up until this point of going for my onsite interview was organized and professional.
I flew out there and had interviews with 4 people. During the 4 interviews, they were asking questions as if they were hiring for a manager role, but I had applied to a team lead role and was explicitly told during the phone screen I would not have direct reports. After the 4 interviews, I sat down with the hiring manager, and she said (this is an exact quote), "You probably noticed we changed the position to a manager role." I was taken aback that they assumed I "noticed" they were interviewing me for a different position rather than being transparent and informing me about the change. I flew home the next day and emailed the recruiter asking for the emails of the 4 people with whom I interviewed so I could send thank you notes, and I asked how to submit for expense reimbursement. After she did not respond for over a week, I sent a second email and CC'd the recruiter coordinator. The recruiter coordinator responded with expense reimbursement instructions, but did not include the emails of those with whom I interviewed. A week after that (so 2 weeks after the interview), the recruiter emailed me letting me know they were still interested, but they were interviewing other candidates, and they were hoping to let me know within the next week. Two weeks later (4 weeks after the interview), the hiring manager emailed me letting me know they were still interviewing other candidates, but they hoped to have a final decision within the next few weeks. Three weeks after that (7 weeks after the interview), I received an offer from a different company. I emailed the Instacart recruiter to let her know, and she responded saying she would talk to the hiring manager and get back to me. That was the last I heard from anyone there. Between the time I sent in my application and when I received this last communication from them was 3 months.
While this process began organized and seamless, it quickly fell apart and showed me their lack of transparency, a true indication of company culture. If this is how they try to impress candidates, I can only imagine how they treat their internal employees.