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Fidelity Investments Software Engineer Interview Questions and Answers
11 Interview questions
Iterate through each character in the array of strings and keep track of the frequency of each character. Return the character with the maximum frequency.
Create a dictionary to store the frequency of each character
Iterate through each string in the array and then through each character in the string
Update the frequency count of each character in the dictionary
Return the character with the maximum frequency
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
Declare variables for first two numbers of the series
Use a loop to generate the series by adding the previous two numbers
Store the series in an array or print each number as it is generated
Join two tables on a key column using SQL
Use the JOIN keyword followed by the name of the second table
Specify the key column in both tables using the ON keyword
Choose the type of join (INNER, LEFT, RIGHT, FULL) based on your requirement
Understanding tree data structures is crucial for software engineering, especially in coding interviews.
Trees are hierarchical data structures with nodes connected by edges.
Common types of trees include binary trees, binary search trees, and AVL trees.
Traversal methods: In-order, Pre-order, Post-order, and Level-order.
Example: In-order traversal of a BST returns sorted order of elements.
Applications: Used in datab...
Shell scripting for find and replace, adding index to lines, multithreading, hashmap vs hashtable, stack vs queue
Use sed command for find and replace in shell scripting
Use awk command to add an index at the beginning of each line in a file
Multithreading is the ability of a CPU to execute multiple threads concurrently
Single threaded means only one thread is executed at a time, while multithreaded allows multiple th...
Yes, I have experience with Junit, SQL and NoSQL databases, Kafka, Dockerization, Java 8 features, stream() operations, and shell scripting in Unix.
I have used Junit for unit testing in Java projects.
SQL databases are relational databases that use structured query language for data manipulation, while NoSQL databases are non-relational databases that provide flexible schema design and horizontal scalability.
I have...
The most complex SQL query involved nested queries for data manipulation. Used inner join. Implemented hashset and avoided trees due to their drawbacks.
Nested SQL query used for complex data manipulation
Inner join used for combining data from multiple tables
Implemented hashset for efficient data storage and retrieval
Avoided trees due to their drawbacks such as unbalanced structure and slower traversal times
Decisions in current project are made through team collaboration and considering project requirements. App architecture is decided based on scalability, performance, and maintainability.
Decisions are made through team collaboration and discussions
Consideration of project requirements and goals
App architecture is decided based on scalability, performance, and maintainability
Use of design patterns and best practices...
Interview questions for Software Engineer position
GDP is not relevant to the Software Engineer position
Java 8 features include lambda expressions, streams, and default methods
Java code snippet: use a HashMap to count occurrences of each number
Functional programming code: use forEach or map method to iterate over list
Sample interview questions for Software Engineer position
Spring vs Spring Boot
Singleton class in Java
Marker interface
Concurrent Hash Map
Performance issues in SQL/Oracle
Mapping in Hibernate ORM
Spring Boot application execution
Difference between PUT and POST methods
Authentication in Java application
Controller class structure in notepad
Scope of Spring bean
URL structure and parts
Difference between Java and JavaScript
A...
Fidelity Investments Software Engineer Interview Experiences
16 interviews found
Anonymous
I applied via Company Website and was interviewed in Mar 2024. There were 4 interview rounds.
(2 Questions)
- Q1. Find the character with the maximum frequency
- Q2. Valid parenthesis
(1 Question)
- Q1. Have you used Junit? What is the difference between SQl and NoSQl Databases? have you worked with Kafka? Kafka based questions. explain dockerization/ containerization. which java8 feature did you work wit...
- Ans.
Yes, I have experience with Junit, SQL and NoSQL databases, Kafka, Dockerization, Java 8 features, stream() operations, and shell scripting in Unix.
I have used Junit for unit testing in Java projects.
SQL databases are relational databases that use structured query language for data manipulation, while NoSQL databases are non-relational databases that provide flexible schema design and horizontal scalability.
I have work...
(2 Questions)
- Q1. What is the most complex sql query you have written till date. Why did you use nested query to achieve your goal? explain the query. which join did you use in the query. have you implemented hashset? how w...
- Ans.
The most complex SQL query involved nested queries for data manipulation. Used inner join. Implemented hashset and avoided trees due to their drawbacks.
Nested SQL query used for complex data manipulation
Inner join used for combining data from multiple tables
Implemented hashset for efficient data storage and retrieval
Avoided trees due to their drawbacks such as unbalanced structure and slower traversal times
- Q2. Find and replace words in a file using shell scripting. add an index in the beginning of each line in a file using shell scripting. what is multithreading? difference between single threaded and multithrea...
- Ans.
Shell scripting for find and replace, adding index to lines, multithreading, hashmap vs hashtable, stack vs queue
Use sed command for find and replace in shell scripting
Use awk command to add an index at the beginning of each line in a file
Multithreading is the ability of a CPU to execute multiple threads concurrently
Single threaded means only one thread is executed at a time, while multithreaded allows multiple threads...
(1 Question)
- Q1. Behavioral questions- tell me about yourself. do you have any questions for us?
Interview Preparation Tips
- DSA
- SQL
- Shell Scripting
- Kafka
Skills evaluated in this interview
Hacker rank for 1 hr
(1 Question)
- Q1. Angular design pattern etc
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There was 1 interview round.
Asked how do you call an api in javascript and basic questions like output of 3 + "3" and 3 -"3"
Interview Preparation Tips
(1 Question)
- Q1. Devops basics from prev company
(1 Question)
- Q1. HR round to check attitude
Selected
I applied via Recruitment Consulltant and was interviewed before Jan 2024. There were 4 interview rounds.
(2 Questions)
- Q1. Normal Core Java question and coding from leetcode
- Q2. Automation framework related questions
(2 Questions)
- Q1. Java Questions and coding
- Q2. Automation testing concepts
(2 Questions)
- Q1. What details can you provide about your projects for the manager's round?
- Ans.
I have worked on various projects including developing web applications, implementing machine learning algorithms, and optimizing database performance.
Developed a web application using React.js and Node.js for a client in the e-commerce industry.
Implemented machine learning algorithms for a predictive analytics project using Python and TensorFlow.
Optimized database performance by fine-tuning SQL queries and indexing st...
- Q2. Question related to domain
(1 Question)
- Q1. Offer letter discussion and notice period discussion
Selected
I applied via Campus Placement and was interviewed before Jan 2024. There were 2 interview rounds.
Simple easy conditional problem
(2 Questions)
- Q1. Basic sorting algorithms
- Q2. Internship experience with tech stack
Selected
I applied via Naukri.com and was interviewed before Apr 2023. There were 3 interview rounds.
2 java questions. 60mins time and easy to medium level
(1 Question)
- Q1. 30min interview on previous project, java basics , spring boot basics and tools you have mentioned CV
(1 Question)
- Q1. How you take decisions in your current project? How are the apps architecture decided?
- Ans.
Decisions in current project are made through team collaboration and considering project requirements. App architecture is decided based on scalability, performance, and maintainability.
Decisions are made through team collaboration and discussions
Consideration of project requirements and goals
App architecture is decided based on scalability, performance, and maintainability
Use of design patterns and best practices to g...
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Sep 2021. There were 4 interview rounds.
Test on hackerrank. 3 programs and 1hr of time
(1 Question)
- Q1. Java 8 questions. code on java stream and database.
(2 Questions)
- Q1. Database related questions
- Q2. Questions on past experience
(1 Question)
- Q1. One to one talk . Questions like where you see yourself in coming years and etc
Interview Preparation Tips
- Core Java
- Database
- Spring Boot
- JPA
I applied via Naukri.com and was interviewed in Aug 2021. There were 4 interview rounds.
3 coding questions
(1 Question)
- Q1. Data structures,java,rest api,design patterns,sql
(1 Question)
- Q1. Technical and general questions to check cultural fit
(4 Questions)
- Q1. Share details of your previous job.
- Q2. Why should we hire you?
- Q3. Why are you looking for a change?
- Q4. Tell me about yourself.
Interview Preparation Tips
- Java
- Core Java
- SQL
- Data Structures
- design patterns
- Microservices
I applied via Naukri.com and was interviewed before May 2021. There were 3 interview rounds.
(1 Question)
- Q1. 1. What is difference between spring and spring boot? 2. Write code for singleton class in Java? 3. What is Marker interface? 4. What is concurrent hash map and how does it work? 5. How will you address pe...
- Ans.
Sample interview questions for Software Engineer position
Spring vs Spring Boot
Singleton class in Java
Marker interface
Concurrent Hash Map
Performance issues in SQL/Oracle
Mapping in Hibernate ORM
Spring Boot application execution
Difference between PUT and POST methods
Authentication in Java application
Controller class structure in notepad
Scope of Spring bean
URL structure and parts
Difference between Java and JavaScript
Applic...
(1 Question)
- Q1. What is GDP of the company? What are the latest features of Java 8? Write Java code snippet to count number of 1s, 2s, 3s in an array [1,2,2,3,3,4,4,1,2,3] Write functional programming code to iterate over...
- Ans.
Interview questions for Software Engineer position
GDP is not relevant to the Software Engineer position
Java 8 features include lambda expressions, streams, and default methods
Java code snippet: use a HashMap to count occurrences of each number
Functional programming code: use forEach or map method to iterate over list
(1 Question)
- Q1. Why you? What is your greatest weakness and what you do to it? When you are under extreme stress, what makes you focus your deliverables? Are you ok to relocate? Are you ok to commute long distances?
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Fidelity Investments Interview FAQs
Some of the top questions asked at the Fidelity Investments Software Engineer interview -
The duration of Fidelity Investments Software Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.
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Fidelity Investments Software Engineer Reviews and Ratings
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