I applied to the Bloomberg website in late July and received my first email for a phone screen in late August. Bloomberg does not recruit at my school, so I did not have any on-campus interviews.

My phone screen was relatively easy (see Question #1).

My on-site interviews consisted of four rounds, each around an hour long with 15-minute breaks in between. I've heard that typically every candidate gets two rounds, and if escorted out after those two, they likely won't receive an offer. I completed two technical rounds, one with HR, and one with a manager.

The interview experience was very positive, especially the on-site portion and Discover Day. Bloomberg covers travel and accommodation, flying candidates out and putting them up in a nice hotel. Transportation from the airport to the hotel is provided via a black car. You also get a tour of the office building, which is quite impressive.

At the end of the process, you receive a reimbursement card for $100. However, in my experience, this amount was not sufficient to cover all expenses.

Discover Day offers an opportunity to interact with other potential interns and full-time employees (all of whom have received offers). You can also speak with Engineers and casually chat with representatives from several teams. I believe this day is intended for preliminary team matching.

How can we multiply two square matrices together? Can we improve the algorithm if we know they're sparsely filled?

Round 1 On-Site:

• Find a number in a sorted array (#1)
• Island Problem (#2)

Round 2 On-Site:

• Given prices to fly candidates to SF/NY, assign locations such that Bloomberg pays the least money (#1)
• Systems Design question regarding incoming stream of stock prices (#2)

Round 3 On-Site:

• Walk me through your resume
• Why Bloomberg?
• Is the location okay?
• What other companies are you applying to?
• Deadlines

Round 4 On-Site:

• Talk me through the design of one of your projects
• What fields/project areas are you interested in?
• Why Bloomberg?