The interview process was a 3-step process:

• CV and Cover Letter Application
• Telephone Interview (Technical)
• Onsite Interviews (2 Technical, 1 HR)

1. Standard CV and Cover Letter

2. Telephone Interview

I was interviewing in Java. I was called on time and had a 15-minute discussion on my previous internship. Then, the interviewer moved on to asking me an algorithm question in a HackerRank shared screen. The question was: "Write an algorithm to reverse the words in a string representing a sentence." It was a reasonable question, and I arrived at a solution in O(n) time. We had a brief discussion about efficiency. The interviewer was quite helpful and did point out potential issues in my code. I was speaking out loud to him the entire time.

3. Onsite Interviews

These interviews took place from 8:45 AM to 2:00 PM in the Bloomberg office in London, which is a really nice place. We had a tour of the office before our interviews, and we were also given some nice goodies like free t-shirts and breakfast.

• 1st Technical Interview: This interview consisted of 2 algorithm questions. I was asked to write the code on a HackerRank screen with 2 interviewers in the same room. The questions were: "Check if two strings are anagrams" and "Sum two numbers represented as linked lists (with the most significant digit first)." Both went pretty well, and I got the most efficient solution for each. They asked if I could use a recursive method for the second problem (I had used iterative), but we didn't actually code it.
• 2nd Technical Interview: This interview was 30 minutes long and focused on my CV, industry experience, and projects. The next 45 minutes were dedicated to a system design problem concerning stock indexes. I was asked to code some basic functions related to it on a HackerRank screen, which went pretty well.
• 3rd Interview: This was an HR interview. I was asked many questions about my CV, previous experience, why I wanted to work at Bloomberg, my career plan, and my expected salary, among other things.

All in all, it was a very smooth interview process.

Reverse words in a string.

Check if two strings are anagrams.

Sum two numbers represented as linked lists and return a linked list (with the most significant digit first).