There was no HR involved which was a red flag for me (all the interview process and communication was done by the team). After a part that took me more than 4 hours, they ghosted me for a month before remembering me.

The interview process started with a recruiter phone screen focused on my background and interest in logistics optimization. This was followed by a take-home technical assessment involving simulation, data analysis, and linear programming using Python — to be completed in 4 hours. After submitting, I was invited to a virtual technical round where I walked through my solution and answered follow-up questions about modeling, scalability, and algorithm choices. The final stage involved a behavioral interview with the engineering manager, focusing on teamwork, problem-solving under pressure, and past project experiences.