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Freecharge Software Development Engineer Lead Interview Questions and Answers

Updated 10 May 2021

Freecharge Software Development Engineer Lead Interview Experiences

2 interviews found

I applied via Referral and was interviewed in Sep 2020. There were 6 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Questions on Problem Solving, DS & Algorithms and System designing were frequently asked.
  • Q2. How can you design a high scale Multithreaded system?
  • Ans. 

    Designing a high scale Multithreaded system requires careful consideration of thread synchronization, load balancing, and resource management.

    • Identify the critical sections of code that need to be synchronized

    • Choose an appropriate synchronization mechanism such as locks or semaphores

    • Implement load balancing to distribute work evenly across threads

    • Use thread pools to manage resources and limit the number of threads crea...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Please start focusing on your problem solving skills from the starting. Learn data structures and algorithms. There are frequently asked questions which are asked repeatedly in many company rounds. So try to solve as many questions as you can . Also, as your experience grows in the industry, then start learning some designing problems to learn more about scalability, reliability, latency and all. This helps you a lot in cracking interviews in well known companies. So keep this advice and start learning from today. Happy to help you!!

Skills evaluated in this interview

I applied via Walk-in and was interviewed before May 2020. There was 1 interview round.

Interview Preparation Tips

Interview preparation tips for other job seekers - The interview is not easy and will require above-average preparation in Problem Solving, Data Structures, Java, Spring Boot, System Design (HLD and LLD).

Software Development Engineer Lead Interview Questions Asked at Other Companies

asked in Freecharge
Q1. How can you design a high scale Multithreaded system?
asked in MasterCard
Q2. Explain spring security,oauth2 ,jwt,saml and tls level security

Software Development Engineer Lead Jobs at Freecharge

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Interview questions from similar companies

Interview Questionnaire 

21 Questions

  • Q1. Discussion of previous written test questions
  • Q2. Find the odd repeating element from a set of repeating elements
  • Ans. 

    Find the odd repeating element from an array of strings

    • Use a hash table to count the frequency of each element

    • Iterate through the hash table to find the element with an odd count

  • Answered by AI
  • Q3. A 2D matrix is given which is row wise and column wise sorted. Find a particular element from it
  • Ans. 

    Finding an element in a sorted 2D matrix

    • Start from the top right corner or bottom left corner

    • Compare the target element with the current element

    • Move left or down if the target is smaller, else move right or up

    • Repeat until the target is found or all elements are checked

  • Answered by AI
  • Q4. SQL Query to find Nth highest salary from table
  • Ans. 

    SQL query to find Nth highest salary from table

    • Use ORDER BY and LIMIT clauses

    • Use subquery to get the Nth highest salary

    • Handle cases where there are less than N distinct salaries

  • Answered by AI
  • Q5. Another basic SQL query
  • Q6. Write a function that returns '3' when '4' is passed as an input and vice versa without using if-else condition
  • Ans. 

    Function to swap '3' and '4' without using if-else

    • Use XOR operator to swap the values

    • Convert the input to ASCII code and perform the swap

    • Use a lookup table to map the values

  • Answered by AI
  • Q7. Question on Suffix trees
  • Q8. Question on Tries
  • Q9. Question on Ternary search trees
  • Q10. Question on hash maps
  • Q11. Question on complexity of an algorithm
  • Q12. 3-4 SQL queries
  • Q13. Question on SQL joins
  • Q14. JAVA questions on static block,static function and static variables
  • Q15. JAVA questions on memory initialization and references
  • Q16. Puzzle on measuring exactly half a glass of water
  • Q17. Introduce yourself
  • Ans. 

    I am a software developer with experience in Java and Python.

    • Proficient in Java and Python programming languages

    • Experience in developing web applications using Spring framework

    • Familiarity with database management systems like MySQL and MongoDB

  • Answered by AI
  • Q18. Why PAYTM?
  • Ans. 

    PAYTM is a leading digital payment platform in India with a wide range of services.

    • PAYTM has a user-friendly interface and offers a seamless payment experience.

    • It provides a variety of services like mobile recharges, bill payments, and online shopping.

    • PAYTM has a strong focus on security and fraud prevention measures.

    • It has a large user base and is widely accepted by merchants across India.

    • PAYTM is constantly innovatin...

  • Answered by AI
  • Q19. Will you go for further studies?
  • Ans. 

    Yes, I am open to pursuing further studies in the future.

    • I believe in continuous learning and staying updated with the latest technologies.

    • Further studies can help me specialize in a particular field and enhance my skills.

    • I may consider pursuing a master's degree in computer science or a related field.

    • However, my immediate focus is on gaining practical experience and contributing to the organization.

  • Answered by AI
  • Q20. Why do you think has PAYTM grown so fast?
  • Ans. 

    PAYTM grew fast due to its innovative approach and early adoption of digital payments.

    • Early adoption of digital payments in India

    • Innovative approach with features like mobile recharges, bill payments, and cashback offers

    • Expansion into e-commerce and financial services

    • Strategic partnerships with major companies like Uber and Alibaba

  • Answered by AI
  • Q21. (looking at my CGPA of 9) You can get a better company. Then Why PAYTM only?

Interview Preparation Tips

Round: Test
Experience: there were 20 mcqs and 2 coding questions. It was a pen and paper test. We were given 1 hour to solve it. The mcqs were of average difficulty. The 2 coding questions were:
1. A variation of the standard Josephus Problem
2. Find the 'x' largest elements from 'n' input elements without using sorting.
Tips: They focus on algorithms not on complete solutions. Do not leave any question unattempted. If you do not know the exact approach then use Brute-Force approach.

Round: Technical Interview
Experience: The Interviewer was very nice. He was focussing on the approach used not on codes.
Tips: Be calm and think by basics :)

Round: Technical Interview
Experience: The interviewer asked high level data structures in this round. But again he saw the approach used and not exact solution
Tips: Don't give up. Tell whatever you know

Round: Technical Interview
Experience: JAVA questions were based on very detailed concepts. Study OOP properly.
Tips: Maintain your calm :)

Round: HR Interview
Experience: Overall the experience was nice and smooth.
Tips: If they allow you to ask them any question then ask them something about the company. They should find you interested in the company :)

General Tips: Just be cool. Show them you are enthusiastic to learn and work. While prepration focus on Basics and Algorithms. Prepare DBMS nicely too :)
Skill Tips: Have full knowledge about your projects
Skills: JAVA, Data Structures, Operating systems, Network Programming, DBMS
College Name: NIT Jalandhar
Motivation: PAYTM is a perfect mix for the dynamic startup culture and stability of a big organiztaion. PAYTM has an amazing work culture and excellent opportunities for growth

Skills evaluated in this interview

Interview Preparation Tips

Round: Test
Experience: There were 3 Questions . One on String manipulation and two were on Binary Trees. All were easy but there was time constraint.
Tips: Practice as many question as possible.
Duration: 60 minutes
Total Questions: 3

Round: Technical Interview
Experience: I was given the problem to design a car pooling system complete with the required classes .. data structures which would be used ... how the database would look like etc..
Tips: General understanding of databases and OOP concepts would do.

Round: Technical Interview
Tips: Be thorough and have in-depth knowledge of each and every point of your resume.

College Name: BITS Pilani

Interview Preparation Tips

Skills: Algorithm, Java, Data structure
College Name: na

I was interviewed before Sep 2020.

Round 1 - Face to Face 

Round duration - 45 minutes
Round difficulty - Medium

I applied thorough LinkedIn and got a call from HR for the interview.
I went to their Noida Office.
First round was mainly focused on Javascript fundamentals.
Interviewer was also friendly.

Round 2 - Face to Face 

(2 Questions)

Round duration - 1 hour
Round difficulty - Medium

Second round was after 15 minutes of the first round. The focus of this round was DS & Algorithms.

  • Q1. 

    Find Subarray with Given Sum

    Given an array ARR of N integers and an integer S, determine if there exists a subarray (of positive length) within the given array such that the sum of its elements equals S....

  • Ans. 

    Given an array and a target sum, find a subarray that sums up to the target sum.

    • Iterate through the array while keeping track of the running sum and the starting index of the subarray.

    • Use a hashmap to store the running sum and its corresponding index.

    • If the running sum - target sum is found in the hashmap, it means a subarray with the target sum exists.

    • Return the starting and ending indices of the subarray or [-1, -1]

  • Answered by AI
  • Q2. 

    Minimum Number of Platforms Required

    You are provided with two arrays, AT and DT, representing the arrival and departure times of all trains arriving at a railway station.

    Your task is to determine the m...

  • Ans. 

    This question asks to find the minimum number of platforms required at a railway station so that no train needs to wait.

    • Sort the arrival and departure times arrays in ascending order.

    • Initialize a variable 'platforms' to 1 and 'maxPlatforms' to 1.

    • Iterate through the arrival and departure times arrays simultaneously.

    • If the current arrival time is less than or equal to the current departure time, increment 'platforms'.

    • If ...

  • Answered by AI
Round 3 - Face to Face 

(1 Question)

Round duration - 30 minutes
Round difficulty - Easy

  • Q1. What JavaScript questions did he ask you during the managerial round, and can you describe the work culture of his team?
  • Ans. 

    The interviewer asked about JavaScript questions and the work culture of the team during the managerial round.

    • JavaScript questions related to closures, prototypes, event handling, and asynchronous programming may have been asked.

    • Work culture may involve collaboration, innovation, agile methodologies, and continuous learning.

    • Examples of work culture could include regular team meetings, code reviews, hackathons, and ment

  • Answered by AI
Round 4 - Face to Face 

Round duration - 15 minutes
Round difficulty - Easy

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in NoidaEligibility criteriaI applied for Frontend role so Javascript was needed.Paytm (One97 Communications Limited) interview preparation:Topics to prepare for the interview - JavaScript,React.js,Java,Node.js,DS & Algo,Time required to prepare for the interview - 1 monthInterview preparation tips for other job seekers

Tip 1 : Be strong at your basics.
Tip 2 : Don't hesitate to ask questions to interviewer.
Tip 3 : Prepare good for DS & Algo as most companies have a separate round for it.

Application resume tips for other job seekers

Tip 1: If possible make 1 page resume
Tip 2: Don't put too many things. Keep it simple. If you're a fresher and have good projects, do put them before your academic section.
Tip 3: Be ready to explain everything you have in your resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Dec 2017.

Interview Questionnaire 

3 Questions

  • Q1. You need to find the maximum water pond formed in bw the building
  • Ans. 

    To find the maximum water pond formed between buildings.

    • Identify the lowest point between the buildings.

    • Calculate the area of the pond using the distance between the buildings and the depth of the pond.

    • Consider any obstacles or uneven ground that may affect the pond's shape.

    • Use a surveying tool or satellite imagery to get accurate measurements.

    • Take into account any drainage systems or natural water flow that may affect

  • Answered by AI
  • Q2. On mars you have to place n robots and they are connected via GPS. now you need to move each robot such that the whole mars is visited and each robot visit the minimum area(meaning no overlapping of area)...
  • Q3. Design dictionary using trie....having operations of inserting a word, updating and deleting (needed to write full running code)
  • Ans. 

    Design a dictionary using trie with insert, update and delete operations.

    • Implement a Trie data structure with nodes containing a character and a boolean flag to indicate end of word

    • For insert operation, traverse the trie and add nodes for each character in the word

    • For update operation, delete the existing word and insert the updated word

    • For delete operation, mark the end of word flag as false and delete the node if it ...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Simple questions
Duration: 1 hour 10 minutes
Total Questions: 3

College Name: IIT Guwahati

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Instahyre and was interviewed in Oct 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Basic Nodejs questions

Round 2 - Technical 

(2 Questions)

  • Q1. Live peer coding interview
  • Q2. Fundamental of JS and clean code architecture
Round 3 - HR 

(2 Questions)

  • Q1. Salary expectation
  • Q2. Joining date and

Interview Preparation Tips

Interview preparation tips for other job seekers - Experience was good
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Sep 2023. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Project discussion
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed before Jun 2022. There were 4 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - One-on-one 

(1 Question)

  • Q1. Questions based on DSA
Round 3 - One-on-one 

(1 Question)

  • Q1. Java specific Interview
Round 4 - One-on-one 

(1 Question)

  • Q1. Hiring Manager Interview

Interview Preparation Tips

Interview preparation tips for other job seekers - DSA, Java, System Design
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Freecharge Interview FAQs

How to prepare for Freecharge Software Development Engineer Lead 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 Freecharge. The most common topics and skills that interviewers at Freecharge expect are Java, Javascript, Java Spring Boot, Spring MVC and Design Patterns.
What are the top questions asked in Freecharge Software Development Engineer Lead interview?

Some of the top questions asked at the Freecharge Software Development Engineer Lead interview -

  1. How can you design a high scale Multithreaded syst...read more
  2. Questions on Problem Solving, DS & Algorithms and System designing were frequen...read more

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Freecharge Software Development Engineer Lead Salary
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₹14.4 L/yr - ₹32 L/yr
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