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Software Developer Interview Questions & Answers
CapitalOne
VINAY KUMAR REDDY C
posted on 30 Aug 2016
I applied via campus placement at Indian Institute of Technology (IIT), Chennai
Interview Questionnaire
1 Question
- Q1. Task Scheduling
Interview Preparation Tips
Experience: Questions are very basic and easy to answer .Algorithms should be implemented on spot but they are also standard ones
Tips: read Richie and kernigan
Duration: 60 minutes
Round: Technical Interview
Experience: Nice question and very hard to solve .Though it is a standard problem but requires spontaneous thinking because there are some restrictions for it
Tips: Read cormen
General Tips: Learn all basic algorithms and be confident.
Skill Tips: Solve some puzzles
Skills: Problem Solving Skills, Approaching A Problem
Duration: 2
College Name: IIT Madras
Motivation: i like data engineering profile
The first round was a coding test, which was outsourced to an external vendor. I was asked 2 basic DSA questions, and there was discussions around the time and space complexity, and scope of optimizing the solutions. Post that there were a few questions around Spring Boot features and basic system design. The interviewer was professional throughout the interview, and the interview process felt more like a discussion, as compared to the standard interview process.
There was another round of coding - this time conducted by the organization itself. It consisted of a medium level DSA question on stacks. I wrote the code on my personal IDE and executed it there itself. The interviewer discussed about the possible edge cases and how I would deal with them. Post solving the question I was asked about my previous projects.
(3 Questions)
- Q1. Discuss in detail about a scenario where a challenging production issue was handled.
- Q2. What are your responsibilities as a senior / team lead in the current organization?
- Q3. How did you handle conflicts with junior engineers and reporting managers?
This was the final round where the discussion was largely around system design and HLD. It started off with questions are system design patterns and concepts. Then I was asked to design a booking design, with discussions around concurrency control and transaction management.
Interview Preparation Tips
(1 Question)
- Q1. Diff between react and jQuery
- Ans.
React is a modern JavaScript library for building user interfaces, while jQuery is a fast and concise JavaScript library for DOM manipulation.
React is component-based, promoting reusability and modularity.
React uses a virtual DOM for efficient updates, while jQuery directly manipulates the DOM.
React is declarative, making it easier to reason about the UI, while jQuery is imperative.
React is typically used for single-pa...
Selected
I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.
3 dsa questions medium level
(2 Questions)
- Q1. 2 medium level dp questions based on string and stocks
- Q2. One hard question based on graph
(1 Question)
- Q1. Hr questions and java , springboot questions etc
Senior Software Developer Interview Questions & Answers
Airpay Payment Services
Anonymous
posted on 14 Apr 2024
Selected
I applied via Naukri.com and was interviewed in Mar 2024. There were 3 interview rounds.
Technical Aptitude on singalton pattern
(3 Questions)
- Q1. What is man in middle attack?
- Ans.
A man-in-the-middle attack is a cyber security attack where the attacker secretly intercepts and possibly alters the communication between two parties.
Attacker intercepts communication between two parties
Attacker may alter the communication
Commonly occurs in public Wi-Fi networks
Can lead to data theft or unauthorized access
- Q2. How to protect api?
- Ans.
Protecting API involves using authentication, authorization, encryption, rate limiting, and monitoring.
Implement authentication mechanisms such as OAuth, JWT, or API keys
Use authorization to control access to different parts of the API
Encrypt sensitive data using SSL/TLS
Implement rate limiting to prevent abuse and protect against DDoS attacks
Monitor API traffic for unusual activity and potential security threats
- Q3. Whats is csrf ?
- Ans.
CSRF stands for Cross-Site Request Forgery, a type of attack where a malicious website tricks a user into performing actions on another website without their knowledge.
CSRF attacks exploit the trust that a site has in a user's browser, by sending unauthorized requests using the user's session.
Prevent CSRF attacks by using tokens in forms, checking the origin of requests, and implementing proper authentication and autho...
(2 Questions)
- Q1. Why you want ti join airpay?
- Q2. Why you leave current organisation?
Skills evaluated in this interview
Software Development Engineer II Interview Questions & Answers
OneCard
Anonymous
posted on 26 Mar 2024
I applied via Referral and was interviewed in Feb 2024. There were 2 interview rounds.
(4 Questions)
- Q1. Questuohn aksed about ds algo not otughj onew
- Q2. AFS FJBN.EJKF AFBJ
- Q3. DHB WFJG WDJ
- Q4. SD E W D
(1 Question)
- Q1. Question aksed in one on one
Interview Preparation Tips
Coding and aptitude round
(1 Question)
- Q1. Tree dsa questions
(1 Question)
- Q1. Horse race question
(1 Question)
- Q1. Location specific question
I applied via Campus Placement
Asked about data interpretation and all these.
Coding test is based on DSA mainly.
Interview Preparation Tips
Senior Software Developer Interview Questions & Answers
MAYBRIGHT VENTURES PRIVATE LIMITED, Kolkata
Anonymous
posted on 11 Oct 2021
I applied via Naukri.com and was interviewed in Sep 2021. There were 3 interview rounds.
Interview Questionnaire
8 Questions
- Q1. Coding Assessment to Create Rest API.
- Ans.
Create a Rest API for coding assessment
Choose a programming language and framework
Define endpoints and HTTP methods
Implement CRUD operations
Use authentication and authorization
Test API using tools like Postman
- Q2. About JWT Token
- Q3. Pagination how will you do for 3 lakh record
- Ans.
Pagination can be achieved by limiting the number of records displayed per page and using page numbers.
Limit the number of records displayed per page to improve performance
Use page numbers to navigate through the records
Implement caching to reduce database queries
Consider using lazy loading to improve performance
Use a server-side framework that supports pagination
Consider using a search feature to filter records
- Q4. Query Optimization
- Q5. Mysql difference between having and where clause
- Ans.
HAVING is used to filter results after grouping, WHERE is used to filter results before grouping.
HAVING is used with GROUP BY clause, WHERE is used with SELECT clause
HAVING filters groups based on aggregate functions, WHERE filters rows based on column values
HAVING is slower than WHERE as it operates on grouped data
Example: SELECT department, COUNT(*) FROM employees GROUP BY department HAVING COUNT(*) > 5;
Example: SELE
- Q6. Mysql index - query to write index
- Q7. Polymorphisim interface
- Q8. Clustered index and non clustered index
Interview Preparation Tips
First Round Technical Discussion. Second Round is Technical Discussion and coding assessment.
Third Round will be business logical assessment.
Skills evaluated in this interview
Senior Software Engineer Interview Questions & Answers
Global Payments
Anonymous
posted on 27 Aug 2021
I applied via LinkedIn and was interviewed in Jul 2021. There were 6 interview rounds.
Interview Questionnaire
3 Questions
- Q1. I've been interviewed for Java profile. Mostly questions are related with data structure and algorithm complexity. Java 8 features, some coding related questions, problem solving etc.
- Q2. Micro service related questions, designing
- Q3. Red-black tree, implementation and complexity of the same
- Ans.
Red-black tree is a self-balancing binary search tree with O(log n) complexity for insertion, deletion, and search.
Red-black tree is a type of binary search tree with additional properties to ensure balance.
It has two types of nodes - red and black - with specific rules for their placement.
The tree is balanced by performing rotations and color flips during insertion and deletion.
Complexity of insertion, deletion, and s...
Interview Preparation Tips
Skills evaluated in this interview
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