The interview process involved a phone screen, followed by three days of interviews with five-person panels. A lunch interview was also included. These interviews took place over a one to two-week period. I interviewed with individuals from more than three teams, distinct from the team that conducted the initial phone screen. Ultimately, the team that conducted the phone screen extended the offer, and I was hired.

After accepting the offer, while completing my responsibilities at my previous company, the recruiter requested a letter signed by my former employer. This letter was to confirm that I had fulfilled all discussions made when I provided my two-week notice. I found this request to be unusual.

The questions were typical coding questions, such as:

• Shuffling cards
• Merge sort using files
• Traversing trees
• C++ related questions

One of the interviewers, who was probably non-technical, asked me a physics brain teaser, which was unexpected. I don't remember the details.