Fidelity Investments Software Developer interview questions

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?”

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