The first interview was an ultra-easy automatic HackerRank task.

The second interview was conducted remotely via HackerRank again. It was a Google-style algorithmic question: you solve the problem, analyze complexity, try to improve it, and write some tests.

There were no questions about past real-world experiences at all.

The third interview was exactly the same as the second one, just with a different task.

Despite my feeling that it went well, I was rejected based on the results. The recruiter ignored my request for more detailed feedback.

In general, the interviewers were very nice and smart. Bolt looks like a nice place to work.

Print a sentence with all words spelled backward.

Check if a string contains the exact same number of repetitions of every character. For example, "aabb" is true, but "aabbc" is false.

Then, check if removing a single character from the string can make it valid. For instance, "aabbc" is true, while "aaabbbcc" is false.

In an array of non-negative integers, find a sequence of integers which sum up to the given number. For example, given [1, 2, 3] and a target sum of 5, return [2, 3].