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Fidelity Investments Full Stack Engineer Interview Questions and Answers

Updated 5 Jun 2024

Fidelity Investments Full Stack Engineer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in May 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Java OOPS concepts abstract class vs interface
  • Q2. SQL query to find duplicate values
  • Ans. 

    Use GROUP BY and HAVING clause to find duplicate values in SQL.

    • Use GROUP BY clause to group the data based on the column you want to check for duplicates.

    • Use HAVING clause to filter out groups that have more than one entry, indicating duplicates.

    • Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name HAVING COUNT(*) > 1;

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Oct 2024. There was 1 interview round.

Round 1 - Coding Test 

Develop rate limiter logic which blocks an IP address when incoming request are > 50 within an arbitrary time frame that you determine.

Interview Preparation Tips

Topics to prepare for JPMorgan Chase & Co. Full Stack Engineer interview:
  • Cloud Computing
  • Devops
Interview preparation tips for other job seekers - Deep understanding of front end, backend, CICD, and architecture is not enough. In this case, extensive hands on experience with Cloud (AWS) is a determining factor for Full Stack Engineer roles (i.e EKS, ECR, EC2, Cloud Formation, RDS, Elastic Beanstalk).

I was interviewed in Jun 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 75 minutes
Round difficulty - Easy

It was an online round taken through hackerrank. There were two coding questions of Easy level, Technical and Aptitude MCQs, that we had to solve.

  • Q1. 

    Merge Intervals Problem Statement

    You are provided with 'N' intervals, each containing two integers denoting the start time and end time of the interval.

    Your task is to merge all overlapping intervals a...

  • Ans. 

    Merge overlapping intervals and return sorted list by start time.

    • Sort the intervals based on start time.

    • Iterate through intervals and merge overlapping ones.

    • Return the merged intervals sorted by start time.

  • Answered by AI
  • Q2. 

    Count Distinct Substrings

    You are provided with a string S. Your task is to determine and return the number of distinct substrings, including the empty substring, of this given string. Implement the solut...

  • Ans. 

    Implement a function to count the number of distinct substrings in a given string using a trie data structure.

    • Create a trie data structure to store the substrings of the input string.

    • Traverse the trie to count the number of distinct substrings.

    • Handle empty string as a distinct substring.

    • Return the count of distinct substrings for each test case.

  • Answered by AI
Round 2 - Video Call 

Round duration - 15 Minutes
Round difficulty - Easy

It was a mix of Technical and Behavioural round.

Round 3 - HR 

Round duration - 30 minutes
Round difficulty - Easy

Final HR round for checking Compatibility with the Company.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Full Stack Engineer in BangaloreEligibility criteriaAbove 7 CGPAJP Morgan interview preparation:Topics to prepare for the interview - Data Structures and Algorithms, OOPS, Operating Systems, Computer Networks, DBMS, Web DevelopmentTime required to prepare for the interview - 5 monthsInterview preparation tips for other job seekers

Tip 1 : Practice as many DSA questions as possible.
Tip 2 : Focus on Core Subjects like OS, CN, DBMS as Well.
Tip 3 : Do some projects to have a good grasp on development also.

Application resume tips for other job seekers

Tip 1 : Make a 1-page Resume.
Tip 2 : Keep it short and crisp, include only relevant experiences and skills.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Sep 2016.

Interview Questionnaire 

9 Questions

  • Q1. How does Internet work?
  • Ans. 

    The Internet is a global network of computers that communicate with each other using standardized protocols.

    • The Internet is made up of millions of interconnected devices, including computers, servers, routers, and switches.

    • Data is transmitted over the Internet in the form of packets, which are small units of information.

    • The Internet uses a set of protocols, such as TCP/IP, to ensure reliable and efficient communication...

  • Answered by AI
  • Q2. Difference between http and https?
  • Ans. 

    HTTP is unsecured while HTTPS is secured with SSL/TLS encryption.

    • HTTP stands for Hypertext Transfer Protocol, while HTTPS stands for Hypertext Transfer Protocol Secure.

    • HTTP operates on port 80, while HTTPS operates on port 443.

    • HTTP data is transmitted in plain text, while HTTPS data is encrypted using SSL/TLS.

    • HTTPS provides authentication, integrity, and confidentiality of data exchanged between a client and a server.

    • W...

  • Answered by AI
  • Q3. What is white and black box testing?
  • Ans. 

    White box testing is a method of testing where the internal structure and implementation details of the software are known and tested. Black box testing is a method of testing where the internal structure and implementation details of the software are unknown and only the inputs and outputs are tested.

    • White box testing is also known as clear box testing, glass box testing, or structural testing.

    • It focuses on testing th...

  • Answered by AI
  • Q4. Write the code to print the pattern that was provided?
  • Ans. 

    Print a pattern using code

    • Use nested loops to iterate through rows and columns

    • Use string concatenation to build each row of the pattern

    • Print each row to display the pattern

  • Answered by AI
  • Q5. Merge two arrays without using a third array.
  • Ans. 

    Merge two arrays without using a third array.

    • Use the concat() method to merge the arrays.

    • Alternatively, you can use the push() method to add elements from one array to another.

    • Remember to handle the case where the arrays have different lengths.

  • Answered by AI
  • Q6. Three ants are at the corner of the triangle. Find the probability that they will never meet.
  • Ans. 

    The probability that three ants at the corner of a triangle will never meet.

    • The ants can move randomly in any direction.

    • The probability depends on the shape and size of the triangle.

    • The probability can be calculated using geometric probability or simulation.

    • Assumptions need to be made about the ants' movement patterns.

  • Answered by AI
  • Q7. Basic Introduction.
  • Q8. Tell me the times you have regreted your decisions and how did you cope up with it.
  • Ans. 

    I have regretted decisions in the past but learned from them to make better choices in the future.

    • Regretted not studying enough for a crucial exam, leading to a lower grade. Learned to prioritize studying and time management.

    • Regretted not speaking up in a meeting when I had a valuable idea. Learned to be more assertive and confident in sharing my thoughts.

    • Regretted not taking a job opportunity that could have advanced ...

  • Answered by AI
  • Q9. Tell me about yor family , hobbies and any event that made you and your family feel proud.
  • Ans. 

    I come from a close-knit family with a passion for outdoor activities. We recently celebrated my brother's graduation, which was a proud moment for all of us.

    • Family: Close-knit and supportive

    • Hobbies: Outdoor activities like hiking and camping

    • Proud moment: Brother's graduation ceremony

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: They basically are testing your reflexes and how quick you are at understanding a problem and arriving at a solution.
Tips: For greater accuracy attempt lesser questions ensuring each of the attemped one's are correct.
Duration: 45 minutes
Total Questions: 50

Round: Technical Interview
Tips: Just be thorough with basic concepts of programming and be yourself.

Round: HR Interview
Tips: Relax and be cool. Don't answer just for the sake of answering it.

Skills: Basic C/C++, implementing , networks
College Name: Thapar University, Patiala

Skills evaluated in this interview

Interview Questionnaire 

4 Questions

  • Q1. One coding question.
  • Q2. Questions on Data Structures
  • Q3. Logical Question: You are a captive. If you say the right answer, the assasin will hang you, if you say the wrong answer, he will shoot you. How do you escape?
  • Q4. Other aptitude questions

Interview Preparation Tips

Round: Other Interview
Experience: One year since I took the interview, so no idea exactly what questions they asked. But I was asked to write the code on paper in front of him and was asked to debug it. Some puzzles and aptitude questions along with other basic coding questions. It was great that the guy was interactive and started asking about my projects and college life.
Btw the answer to the logical question is: I should say " you will shoot me". Paradoxical.
Tips: Feel free to ask anything that you would like to know from them. Also frankly say that you don't know a certain topic if you have no clue what it is about. They don't like people wasting their time.

Round: HR Interview
Experience: This was not exactly a technical interview. He asked me to write a code to find the day of week when a certain date in any year of the calendar is given. I answered it and then he starting asking general questions as to why do u want to join the company, etc.
I gave answers to most of them convincingly. But I kept him engaged by explaining my life at college, the extra curriculars I did at college. Also I asked him about his experience as a software engineer. I asked him to reflect upon his career and how I should approach about my career.
Tips: The best part about HR interviews is they expect you to ask them lots and lots of questions. The more they are engaged, the more are your chances of impressing and getting selected. And more importantly, ask the interviewer about his experience with the present firm. This also works with my manager when ever he has a one on one with me :P
Cheers and all the best.

Skills: Soft Skills, General Aptitude, LOGICAL THINKING ABILITIES, Coding Skills And Knowledge On Data Structures
College Name: IIT Hyderabad

I was interviewed in May 2017.

Interview Questionnaire 

6 Questions

  • Q1. Can string class be extended
  • Ans. 

    Yes, the string class can be extended in most programming languages.

    • Inheritance can be used to extend the functionality of the string class.

    • By creating a new class that inherits from the string class, additional methods and properties can be added.

    • Extending the string class allows for customization and adding specific functionality to strings.

    • Example: In Python, the string class can be extended by creating a new class

  • Answered by AI
  • Q2. What are the implecit object in JSP
  • Ans. 

    Implicit objects in JSP are predefined objects that are available for use without any declaration or initialization.

    • Implicit objects in JSP include request, response, session, application, out, config, pageContext, page, exception, and others.

    • These objects provide access to various aspects of the JSP environment and can be used to perform common tasks.

    • For example, the request object allows access to HTTP request parame...

  • Answered by AI
  • Q3. How does hash map works
  • Ans. 

    A hash map is a data structure that uses a hash function to map keys to values.

    • Hash map stores key-value pairs

    • It uses a hash function to compute an index for each key

    • Collisions can occur when two keys hash to the same index

    • Hash maps provide fast access to values based on their keys

  • Answered by AI
  • Q4. Difference between string buffer and string builder
  • Ans. 

    StringBuffer and StringBuilder are both used to manipulate strings, but StringBuffer is thread-safe while StringBuilder is not.

    • StringBuffer is synchronized, making it safe for use in multi-threaded environments.

    • StringBuilder is not synchronized, making it faster but not thread-safe.

    • StringBuffer is preferred when multiple threads are involved, while StringBuilder is preferred for single-threaded scenarios.

    • Both classes p...

  • Answered by AI
  • Q5. What is MVC
  • Ans. 

    MVC is a software architectural pattern that separates an application into three main components: Model, View, and Controller.

    • Model represents the data and business logic of the application.

    • View is responsible for displaying the user interface.

    • Controller handles user input, updates the model, and interacts with the view.

    • MVC promotes separation of concerns and modularity in software development.

    • Example: In a web applica...

  • Answered by AI
  • Q6. What are the annotation used in RESTFULL web services
  • Ans. 

    Annotations used in RESTful web services

    • 1. @Path - Specifies the URI path for the resource

    • 2. @GET - Specifies that the method handles HTTP GET requests

    • 3. @POST - Specifies that the method handles HTTP POST requests

    • 4. @PUT - Specifies that the method handles HTTP PUT requests

    • 5. @DELETE - Specifies that the method handles HTTP DELETE requests

    • 6. @PathParam - Binds the value of a URI template parameter to a method paramete...

  • Answered by AI

Interview Preparation Tips

Skills: Java Application Development

Skills evaluated in this interview

I was interviewed before Jun 2016.

Interview Questionnaire 

4 Questions

  • Q1. Ratios
  • Q2. Securitization
  • Q3. Expected package
  • Q4. Preferred location
  • Ans. 

    I prefer to work in a location that offers a vibrant and diverse community, with access to cultural events and opportunities for personal growth.

    • I value a location that has a strong sense of community and offers a variety of cultural activities.

    • Access to educational and personal growth opportunities is important to me.

    • I am open to considering different locations that meet these criteria.

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: Financial aspects were covered in this round
Tips: Polish your technical skills

Round: Test
Duration: 1 hour
Total Questions: 20

College Name: Amity School Of Engineering And Technology, Noida

Analyst Interview Questions & Answers

Blackrock user image Riddhima Arora

posted on 25 Aug 2017

I was interviewed before Aug 2016.

Interview Questionnaire 

2 Questions

  • Q1. Questions on databases
  • Q2. Why should we hire you?
  • Ans. 

    I have the analytical skills, experience, and passion to excel in this role.

    • I have a strong background in data analysis and interpretation

    • I have experience in using various analytical tools and techniques

    • I am detail-oriented and have a proven track record of delivering accurate and insightful analysis

    • I am a quick learner and can adapt to new challenges and environments easily

  • Answered by AI

Interview Preparation Tips

Round: Test
Duration: 1 hour

Skills: Computer Science
College Name: Thapar University, Patiala

I was interviewed before May 2016.

Interview Preparation Tips

Round: Written Test
Experience: I attended interview at hyderabad location for java Sr.Software Engineer.
1Q) Find out given string palindrome or not.
Ex: madam
2Q) Find first and last index searching number in a array.
Ex: [1,2,3,3,3,3,4,5]
Output : 2,5
3Q) Arrange Strings in alphabetical order.

Tips: Prepare numeric and string related algorithms

I was interviewed in Dec 2016.

Interview Preparation Tips

Round: Test
Experience: Programming section had basic questions on C++ & data structures.
Tips: Try to score maximum in aptitude test, they consider your score while placement.
Duration: 2 hours
Total Questions: 35

Round: Technical Interview 1
Experience: Questions asked during this round:
Introduce yourself.
Questions on projects & internships.
Questions on Final year project in detail (max part of interview was on final year project).
Basic concepts of C++.
Few programs on C++.
Puzzles.


Round: Technical Interview 2
Experience: ? 2 interviewers were there.
? Stressed interview.
? They grilled me a lot on C++ & data structures.
One interviewer started asking questions, and before I could complete my answer, another used to cut me in
middle & start asking another question. I realized it

Fidelity Investments Interview FAQs

How many rounds are there in Fidelity Investments Full Stack Engineer interview?
Fidelity Investments interview process usually has 1 rounds. The most common rounds in the Fidelity Investments interview process are Technical.
How to prepare for Fidelity Investments Full Stack Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Fidelity Investments. The most common topics and skills that interviewers at Fidelity Investments expect are Agile Methodology, Cloud Computing, Cypress, DevOps and GraphQL.
What are the top questions asked in Fidelity Investments Full Stack Engineer interview?

Some of the top questions asked at the Fidelity Investments Full Stack Engineer interview -

  1. SQL query to find duplicate val...read more
  2. Java OOPS concepts abstract class vs interf...read more

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Fidelity Investments Full Stack Engineer Interview Process

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