Thumbtack Software Engineer interview questions

Very structured interview process with great turnaround times. My interview process with them lasted for less than 2 weeks and I had the result of my final round delivered to me the very next day of my final round. Interview process started with standard phone screen, two interviewers on the line with one shadowing and one interacting and asking questions. Went through two coding questions, on the easy side in terms on difficulty levels. Required basic knowledge of Map data structure. Onsite had 5 rounds which started with System design, then a coding round with interaction about past projects and technology stack that you have worked with, then a break and informal chat with interviewer around what the product is about and the company culture etc. The next two rounds were coding again where you had to come up with running programs built from scratch. They didn't enforce OOP concepts while writing programs but they needed running code and the questions were more real world problems like design a calendar with update, delete and edit event functionality, etc

One phone screen with a recruiter, one technical phone interview, and one onsite interview consisting of 3 coding questions and 1 systems design question. I appreciated that questions stemmed from real-world problems, and interviewers were collaborative as opposed to scrutinizing.