Meta Software Developer interview questions

Super challenging process in many ways. I did really well on almost all of the interviews and still got called back for follow ups. Ultimately received an offer. Appreciated the challenge as it felt like a good sign for the quality of the engineering team.

recruiter call, company provides mock interview, 45 mins screening round and 4 rounds loop interview including 2 coding rounds, behavior questions and system design. Coding rounds 2 coding questions each.