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Fidelity Investments Site Reliability Engineer Lead Interview Questions and Answers
Fidelity Investments Site Reliability Engineer Lead Interview Experiences
1 interview found
Anonymous
I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.
(2 Questions)
- Q1. Python Tuples and Arrays
- Q2. Kubernetes Persistent Volumes
(2 Questions)
- Q1. What was your last project
- Ans.
My last project involved implementing a monitoring system for a large-scale e-commerce platform.
Designed and implemented a custom monitoring solution using Prometheus and Grafana
Integrated alerting mechanisms to notify on-call engineers of critical issues
Optimized monitoring queries and dashboards for performance and usability
- Q2. What did you do
(1 Question)
- Q1. Culture fit questions
Interview Preparation Tips
Top trending discussions
Interview questions from similar companies
(1 Question)
- Q1. Tell me about yourself
- Ans.
I am a passionate software engineer with experience in developing web applications using various technologies.
Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular
Proficient in backend development with Node.js and databases like MySQL and MongoDB
Familiar with version control systems like Git and deployment tools like Docker
(1 Question)
- Q1. Tell me about yourself
- Ans.
I am a software engineer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
5 years of experience in software development
Proficient in Java, Spring Boot, and Angular
Strong problem-solving skills
Experience working in Agile development environment
Passionate about learning new technologies
Sachin Aglave
Interview Questionnaire
4 Questions
- Q1. Tell me about your internship, B.Tech project(BTP), CV
- Q2. Implement LRU cache.
- Ans.
Implement LRU cache
LRU stands for Least Recently Used
It is a cache eviction policy that removes the least recently used item
It can be implemented using a doubly linked list and a hash map
Newly accessed items are moved to the front of the list
When the cache is full, the item at the end of the list is removed
- Q3. What is virtual memory? Will we need virtual memory even if we have infinite amount of RAM?
- Ans.
Virtual memory is a memory management technique that allows a computer to use more memory than it physically has.
Virtual memory uses a combination of RAM and hard disk space to store data.
It allows programs to use more memory than is physically available.
If a program tries to access memory that is not currently in RAM, it will be swapped in from the hard disk.
Even if we had infinite RAM, virtual memory would still be n...
- Q4. Given an array, Find out maximum length of subarray where max of subarray <= 2*min of subarray
- Ans.
Find maximum length of subarray where max <= 2*min.
Iterate through array and keep track of max and min values.
Update max length when condition is met.
Time complexity: O(n)
Interview Preparation Tips
Experience: No CPI cut off and It was open for all departments.
Round: Test
Experience: In muliple choice question Mostly questions were base on maths, probability, c programs, algorithms, Systems. If you are prepared then Questions were not that much tough. Keep strong concepts of Operating systems. For subjective part, Some problems were from maths proofs, some were from probability, some were from algo. We had to write algorithms. etc
Duration: 180 minutes
Round: Problem Statement
Experience: Questions were doable.
Round: Interview
Experience: Everyone was cool, They made me feel comfortable and then started asking questions.
Tips: If you have good rank in online coding competition, do mention it in CV.Most of the students think that GS asks only probability-puzzles. They did not asked me any question on probability or puzzle. Everything they asked was based on Algorithms problems and Operating system. I think it depends on team for which they are hiring. Most important point is don’t lose hope because you have low CPI or you are not good at something. Keep Operating systems fundamental concepts strong.
General Tips: We should balance in Placement and Compititive online coding. Keep in mind Placements and Compititive online coding are some what different things. Keep on improving our mistakes on daily basis. I would strongly suggest you to do introspection daily it will help you to find out your weaknesses and strong points, where we are going wrong etc. There are two thing on which we shoud focus.1. Preparation (I have told everything requered for preparation).2. Get output of all hard work. How to keep our mind on 100% output while the actual exam(placement).For this, I used to go for physical exercise daily in the morning and medidate for 20-30 minutes. Along with exercise i used to do Sudarshan Kriya(Art of Living). Meditation has lot of power :).
Skill Tips: Keep your OS fundamentals strong. To improve codgin skills practice as many problems as you can. Regularly participate in online coding competitions it really helps to solve or approach any new problem. Many time instead of correct answer the approach to solve the problems is very important. How you think, How you approach the problem is checked in interview.
Skills: Coding Skills, Operating Systems , Problem solving skills
College Name: IIT Guwahati
Motivation: The name GS itself enogh for motivation.
Skills evaluated in this interview
I was interviewed before Mar 2021.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Technical round with questions on DSA and OS.
- Q1.
LRU Cache Design Problem Statement
Design and implement a data structure for a Least Recently Used (LRU) cache that supports the following operations:
get(key)- Retrieve the value associated with the...
- Ans.
Design and implement a Least Recently Used (LRU) cache data structure that supports get and put operations with a specified capacity.
Implement a doubly linked list to keep track of the order of keys based on their usage.
Use a hashmap to store key-value pairs for quick access and updates.
When a key is accessed or updated, move it to the front of the linked list to mark it as the most recently used.
When the cache reaches...
- Q2.
Maximum of All Subarrays of Size K
Given an array of non-negative integers and an integer K representing the length of a subarray, your task is to determine the maximum elements for each subarray of size ...
- Ans.
Find the maximum elements for each subarray of size K in a given array.
Iterate through the array and maintain a deque to store the indices of elements in decreasing order.
Pop elements from the deque that are out of the current window.
Keep track of the maximum element in each subarray of size K.
Return the maximum elements for each subarray.
- Q3. What is virtual memory?
- Ans.
Virtual memory is a memory management technique that allows a computer to compensate for physical memory shortages by temporarily transferring data from RAM to disk storage.
Virtual memory allows programs to use more memory than is physically available on the system.
It helps in multitasking by allowing multiple programs to run simultaneously without running out of memory.
Virtual memory uses a combination of RAM and disk...
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
60 mins and basic quants-based questions along with SQL
(2 Questions)
- Q1. Multi-Threading in Python - GIL
- Ans.
Global Interpreter Lock (GIL) in Python restricts execution of multiple threads at once to prevent race conditions.
GIL is a mutex that protects access to Python objects, preventing multiple threads from executing Python bytecodes at once.
This means that even in a multi-threaded Python program, only one thread can execute Python code at a time.
GIL can limit the performance of multi-threaded Python programs, especially f...
- Q2. Certifications in my resume - AWS and Ethical Hacking
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Asked everything that was present in my resume
- Q2. DBMS, OOps were asked a lot and react as well
I applied via Campus Placement
They asked you to reverse a palidrome
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Oct 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Asked about oops
- Q2. Easy level DSA question was asked
(1 Question)
- Q1. General hr questions
I was interviewed before Nov 2023.
(1 Question)
- Q1. Tell me about yourself
(1 Question)
- Q1. Difference between sql and nosql
- Ans.
SQL is a relational database management system, while NoSQL is a non-relational database management system.
SQL databases are table-based, with a predefined schema, while NoSQL databases are document-based, key-value pairs, graph databases, or wide-column stores.
SQL databases are good for complex queries and transactions, while NoSQL databases are better for large amounts of data and scalability.
Examples of SQL database...
(1 Question)
- Q1. Basic java questions
(1 Question)
- Q1. Why bank of america
- Ans.
Bank of America offers a challenging work environment, opportunities for growth, and a strong reputation in the industry.
Bank of America has a strong reputation in the banking industry
The company offers opportunities for growth and career development
Bank of America provides a challenging work environment for software engineers
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed before Feb 2023. There were 2 interview rounds.
Basic questions array loops etc
(2 Questions)
- Q1. Basic SQL questions like select group join etc
- Q2. Question about your cv
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