Posit Senior Software Engineer interview questions

HR call, followed by an hour discussion with hiring manager. After that a 2 hour coding interview. The coding interview involves first 30 mins of discussion of the problem with the interviewer and then async coding for an hour before a live discussion. The coding question was not a leetcode style coding question but has lot of moving parts that need to be solved and figured out quickly. String manipulation and num to string/string to num would be good to be confident with.