F

Fidelity Investments

Developer

Interview Date

September 2022 (post date)

Result

Selected

Difficulty

Not Specified (some OS questions were tough for th

Rounds

3 rounds

Drive Type

Full-Time

Topics asked

AptitudeEnglishProgramming and Computer Science MCQsBSTDynamic ProgrammingArray PartitioningProjectsOS (demand pagingscheduling algorithms)SQL QueriesNetworkingBinary SearchQuicksortOOPS (abstract classesmultiple inheritance)Behavioral questions.

Detailed experience

Role: Developer

College: Not Specified

Interview Date: September 2022 (post date)

Interview Type: Full-Time

Result: Selected

Difficulty: Not Specified (some OS questions were tough for the candidate)

Rounds: 3 rounds

Topics Asked: Aptitude, English, Programming and Computer Science MCQs, BST, Dynamic Programming, Array Partitioning, Projects, OS (demand paging, scheduling algorithms), SQL Queries, Networking, Binary Search, Quicksort, OOPS (abstract classes, multiple inheritance), Behavioral questions.

Experience:

This interview experience for a Developer role at Fidelity Investments involved three rounds.

Round 1: Online Test
Conducted on HirePro, the test included sections on aptitude, English, and programming and computer science-related MCQs. There were three programming questions: constructing a BST and printing its boundary traversal, a dynamic programming question similar to 0-1 Knapsack requiring space reduction (candidate passed 75% of test cases), and an array partitioning question similar to Quick sort.

Round 2: Technical Round
The interviewer started with "Tell me about yourself." Project discussions lasted around 20 minutes. The interviewer posed tough OS questions on demand paging and scheduling algorithms, to which the candidate admitted not being fully prepared. SQL queries based on a given situation were asked, along with basic networking questions. The candidate was asked to code Binary Search and Quicksort and explain them. OOPS concepts like abstract classes and multiple inheritance were also discussed. Android development questions were asked because of a basic Android project on the resume.

Round 3: HR Round
This round covered typical HR questions: "How was my day?", family background, dream company, favorite novels/authors, expectations from the company, what was the best thing learned so far, what to do if a team member doesn't meet expectations, role model, and "Why Fidelity?". After two months, the candidate received a selection email for a Developer position.

Posted on - 12 Nov 2025
Fidelity Investments Interview Experience - Developer | OAHelper