There was a total of 3 rounds. First was a HackerRank, then a 1-hour phone call, and finally an on-site interview. The on-site interview was two 1-hour-long interviews.
I don't remember exactly, but for onsite, I had to write a tree traversal algorithm. I also had to create the class for nodes and write a test case as well.
The following metrics were computed from 6 interview experiences for the Thumbtack Software Engineer (Internship) role in San Francisco, California.
Thumbtack's interview process for their Software Engineer (Internship) roles in San Francisco, California is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Thumbtack's Software Engineer (Internship) interview process in San Francisco, California.