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Bloomberg L.P. Financial Software Developer Interview Questions & Reviews

Updated Jul 11, 2014
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13 people found this helpful

Accepted Offer

Positive Experience

Difficult Interview

Financial Software Developer Interview

Financial Software Developer
New York, NY

I applied online and the process took 2 months - interviewed at Bloomberg L.P. in June 2014.

Interview Details – From the online application (bloomberg website) to the phone interview took around 4 weeks (a first interview was scheduled within 2 weeks but the interviewer didn't call so we rescheduled). The phone interview was quite straightforward and I was asked the following questions
1- Kind of a strange question. Generate all 3-digit combinations of 1-9 but not repeats in the sense that if you have 123, then 231, 321, etc. are not allowed. [nested for loops]
2- Reverse a given sentence (no use of library methods, arbitrary spaces between words). Make it faster. [start at the end and find and print words one-by-one].
3- You are given a 3L and a 5L container and unlimited supply of water. How to make 1L?[I found a longer solution but the short on is pour 3L into 5 twice.]
4- A program/algorithm which given mL and nL buckets figures out how (if possible) make kL. [we discussed the solution and the interviewer was nice and gave me a hint. Its a DP problem].

The next day, I received and invitation for on-site interview. The travel schedule part was straightforward and convenient.
I was invited to the NY office. There was a group of around 30 people like me. They hold you for a few minuts to issue a security badge. Then there is a tour about all the 31 or so aquariums and fishes at bloomberg. Eventually, there is breakfast and then the interviews come find you. There is 4 rounds of interview. Rounds 1-2 are technical, 3 is management, and 4 is HR.
Some questions I remember:
1- Find shortest path on a chessboard from low left corner to top right. You can move right and top only and some cells are inaccessible (DFS).
2- You have sorted arrays A and B with sizes m and n. Assume at the end of array "A" you have "n" empty slots. How to merge with minimum number of operations (start at the end instead of beginning). Prove it works (induction).
3- Some runners running in a field with some "k" sensors. We get events of runnings locations. How to print the top "m" runners? (array of lists or hash table of lists depending on the location of the sensors. each list is one sensor). Some questions on how to identify the ordering within each list.
4- CPU Cache implementation. How to implement the least frequently used procedure.
5- Scheduling some jobs over "m" servers. Centralized vs distributed implementation? How to implement.

The management interview was interesting and I liked the two managers. HR was fine too. I did not do any negotiations.

Interview Question – The chessboard problem. I first mentioned BFS and use of a Queue but the interviewer kept asking about some data structure with less memory that I could extract due to the simple structure of the graph. I did not understand what he meant. I eventually mentioned DFS and proved it works uses less memory.
The cache problem took a long time. I kind of though I failed it at some point. I had no prior knowledge of the topic since I am not a CS guy. I eventually, used an array to store the access time to different items and O(n) search through it to find the least frequently used one. The interviewer did not raise the complexity. He wanted me to write code on a paper (which is hard, esp. in C).
  View Answer

Negotiation Details – I did not do any negotiations. I accepted the offer for some time in the future since I need to resolve the visa part.


Accepted Offer

Negative Experience

Financial Software Developer Interview

Financial Software Developer

Interviewed at Bloomberg L.P.

Interview Details – One phone interview and one on site (3 interviewers) plus HR review. Three interviewers are two developer and one manager. Then you get the offer and they do all background checks etc.

Interview Questions

Negotiation Details – Not much negotiation room for junior hire


2 people found this helpful

Accepted Offer

Positive Experience

Average Interview

Financial Software Developer Interview

Financial Software Developer

I applied through college or university and the process took 2 days - interviewed at Bloomberg L.P. in September 2013.

Interview Details – I was interviewed on campus ( University of Maryland ,college park ) . I got a call through career fair . The first interview happened at the fair itself, I was asked a simple mathematical questions , and a simple programming questions .
Then there were 2 back to back tech interview . Some of the questions that were asked :
          Given a list of exchange rates , between several currencies . Find out if it is possible to profit while moving through currency , exchanging , and ending up at the same currency you started with .
          There was a question about implementing vectors ( from STL ) .
         To implement a queue by using stacks .

Third interview was a not really technical although person asked me about python , asked me to write some basic code in python .

Interview Question – The question about inner workings of templates in C++, syntax etc , was unexpected . I had coded and prepared from a more algorithm and data structure point of view . I knew some these c++ internals , but that was not the skill i was showcasing . I have given other interviews , and such software companies ,rarely ask these language specific questions . As a result whatever interviews i gave post this one , i claimed to know only C, lol.   Answer Question

Negotiation Details – I did not do much negotiation . I had only one offer back then .


9 people found this helpful

Accepted Offer

Positive Experience

Difficult Interview

Financial Software Developer Interview

Financial Software Developer

I applied online and the process took 2 months - interviewed at Bloomberg L.P. in December 2013.

Interview Details – Applied Online...

Phone Interview.. Not difficult.
Question 1: Why make data members private and access them using getter and setter methods when you can access them directly by making them public.
Question 2 : Given stock prices of n days. Find when to buy and when to sell stock in order to gain maximum profit
Question 3 : Given an array of size greater than 'x' and a range 0 to x . Find duplicate elements in the array. Hint. You can destroy the array but the solution should use O(1) space and O(n) time where n is the size of the array.

On Site Interview:

Interview 1 :
Interview with 2 software developers
Started with some questions related to my projects
Q1 : Diamond Inheritance Problem in C++. Use of virtual keyword. And how are things handled internally. Basically checked my understanding of vtable

Q2 : Can you use virtual keyword with destructors?

Q3 : Given heads of two linked lists. Find if the two linked lists intersect.
Solution should not use extra memory.

Q4 : Reverse linked list. Tested concepts of double pointers, pass by value and pass by reference.

Interview 2 :
Interview with 2 software developers
Q1 : In what case would you use BST over a hash table..
Q2 : Insertion in BST
Q3 : Find 'k'th smallest element in BST. What extra information would you require here
Q4: Given a string which has a lot of spaces beween words . Remove these extra spaces in the string
 eg: " I love New York " --> "I love New York"
Q4 : You get an input in the form [2 lowercase characters , A number] .. eg [aa,10] , [bd, 12]..
Given a two letter input, find the last 10 numbers associated with the string..
Design a data structure to implement this without using STL. Basically I was asked to design a hash function.

Interview 3 :
Interview was with a project manager

Q1 : Find the first distinct element in an array
Q2 : C++ does not have byte datatype. How would you create this datatype.
Q3 : Lets say I have a code currently executing on my machine. I overwrite the code with a newer version. But the older version is still executing. Why do you think this is happening.

Interview 4 :
Interview with HR
General HR Interview

Interview Question – Given heads of two linked lists. Find if the two linked lists intersect.
Solution should not use extra memory.
  View Answers (7)


Accepted Offer

Neutral Experience

Financial Software Developer Interview

Financial Software Developer

I applied through college or university and the process took 2+ weeks - interviewed at Bloomberg L.P..

Interview Details – C++ questions, like sizeof implementation, swap code. Simple questions but they expect thorough answers.
Maximize profit given a sequence of daily prices by buying and selling only once each.
Describe your most complicated work.
One interviewer tried to test my bias for action and if I have an urgency to do something quick and finish the goals

Interview Question – generic swap   Answer Question

Negotiation Details – non-negotiable


Declined Offer

Negative Experience

Difficult Interview

Financial Software Developer Interview

Financial Software Developer
Raleigh, NC

I applied through college or university - interviewed at Bloomberg L.P. in November 2013.

Interview Details – Scheduled oncampus interview and two ppl interviewed for one hour.

No introduction of themselves,no introduction of the position for which I was being interviewed and looked uninterested.

Asked two coding questions and were continously emphasizing on lowering down the complexity.

Interview Question – Remove consecutive duplicates in a string inplace and less than O(n)   Answer Question

Reason for Declining – Not interested in profile


2 people found this helpful

Accepted Offer

Positive Experience

Difficult Interview

Financial Software Developer Interview

Financial Software Developer
New York, NY

I applied online - interviewed at Bloomberg L.P. in February 2012.

Interview Details – Standard Interview process, with recruiters visiting my school, there were 4 rounds of on campus interviews, roughly 50 minutes each. First 2 where with 2 software developers, then 1 HR interview and lastly a senior executive interviewed me.

Interview Question – The exact details are a bit hazy, the basic idea was as follows. Implement a storage class using in c++. The storage class had to store doubles in an array and write to both ends of the array, while recycling the space as efficiently as possible.   View Answer

Negotiation Details – I did not negotiate


2 people found this helpful

Accepted Offer

Positive Experience

Difficult Interview

Financial Software Developer Interview

Financial Software Developer
Orlando, FL

I applied through college or university and the process took 2 weeks - interviewed at Bloomberg L.P. in October 2013.

Interview Details – Submitted my resume at an on-campus career fair, and got a call several days later to schedule a on-campus interview the next morning. Talked with 6 recruiters the next day. After about five days, got the offer.

Interview Question – Not many, mostly technical questions focusing on coding, two or three behavioral questions such as why Bloomberg and what's most important for you other than money etc. I use Java though Bloomberg uses C++ most.   View Answer

Negotiation Details – The package is generous for a new graduate, I didn't plan to negotiate....


1 person found this helpful

Accepted Offer

Positive Experience

Average Interview

Financial Software Developer Interview

Financial Software Developer

I applied online and the process took 3 days - interviewed at Bloomberg L.P. in September 2013.

Interview Details – Got a phone interview with a mobile developer there asked about basic stuff like what's the difference between java and c++and polymorphism,inheritance an memory mangement (heap-Stack) virtual functions

Interview Question – where is static variables stored   Answer Question


3 people found this helpful

Accepted Offer

Positive Experience

Average Interview

Financial Software Developer Interview

Financial Software Developer

I applied through college or university and the process took 3 weeks - interviewed at Bloomberg L.P..

Interview Details – Bloomberg came to my school career fair. I chatted with a representative, ended up getting an interview out of it. The first two interviews were both about an hour technical. The first one had a few questions about prior experience, while the second one was over an hour straight of writing code. The third interview was half technical and half behavioral. They were very timely in getting back to me about the interviews.

Interview Question – If you have two very large integers, how do you calculate the product if the product is too large to be represented by your computer program.   View Answer

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