I interviewed at Fidelity Investments (Durham, NC) in Aug 2022
Interview
First I had a quick call from the recruiter to set up the interview. After that I had three rounds, First two are technical and the third one is with Hiring Manager who also asked some technical questions. In the first round I was asked to solve a coding assignment(which I did) and some questions on data structures. The second round also had two coding assignments which are not that hard. The final round is with hiring manager who asked me some simple questions like oop concepts, agile methodologies. I thought the interview went pretty well and was sure I’d get the job.
Interview questions [1]
Question 1
Convert numbers in a string to integer.
Data structures- set vs arraylist
Sql query
HR was the first round
Followed by HM
HR asked for availability and resume then just disappeared
Even after following up, no response
Then next week for the same role, same message she sent to a friend of mine
Interview questions [1]
Question 1
They asked for availability and then totally ghosted me
1. DSA Round (Easy Level)
They usually don’t go very deep into complex algorithms. Expect fundamentals like:
Anagram check (e.g., compare two strings efficiently)
Palindrome check (string or number)
Basic array/string manipulation
Sometimes simple hashing or sorting logic
2. DBMS Basics
What is a primary key / foreign key
Difference between SQL joins (INNER, LEFT, RIGHT)
Basics of normalization
Simple query writing
They usually keep it conceptual + a few practical questions.
3. OOPs Concepts
Very standard questions, such as:
Pillars of OOP: Encapsulation, Inheritance, Polymorphism, Abstraction
Real-life examples
Difference between overloading vs overriding
Why OOP is useful
They may ask you to relate this to your project.
4. Puzzle / Logical Thinking
These are not super hard—just to test reasoning:
Basic math/logical puzzles
Pattern-based questions
Situational problem solving
5. Project Discussion
Explain your project clearly:
Problem statement
Your role
Tech stack
Be ready for:
“Why did you choose this approach?”
“What challenges did you face?”
“How would you improve it?”
I interviewed at Fidelity Investments (Durham, NC)
Interview
Behavioral interview with the hiring manager centered around STAR-style questions and getting an understanding of your current position. Focused on finding overlap in your experience with the experience needed for the role
1
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