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Gainsight Sdet (Software Development Engineer in Test) Interview Questions, Process, and Tips

Updated 1 Apr 2021

Gainsight Sdet (Software Development Engineer in Test) Interview Experiences

1 interview found

I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. 1. Find triplet in an array to sum up to a given number?
  • Ans. 

    Find triplet in an array to sum up to a given number.

    • Sort the array in ascending order.

    • Iterate through the array and fix the first element.

    • Use two pointers approach to find the other two elements that sum up to the given number.

  • Answered by AI
  • Q2. 2. Print a star pattern?
  • Ans. 

    Printing a star pattern using loops in programming.

    • Use nested loops to print the pattern

    • The outer loop controls the number of rows

    • The inner loop controls the number of stars to be printed in each row

    • Use string concatenation to build the pattern

    • Example: for a pattern with 5 rows, the first row will have 1 star, the second row will have 2 stars, and so on

  • Answered by AI
  • Q3. SQL query of finding aggregate salary for the division
  • Ans. 

    SQL query to find aggregate salary for a division

    • Use the GROUP BY clause to group the employees by division

    • Use the SUM function to calculate the total salary for each division

    • Include the division column in the SELECT statement

    • Example: SELECT division, SUM(salary) AS total_salary FROM employees GROUP BY division

  • Answered by AI
  • Q4. Difference between Abstract class vs Interface?
  • Ans. 

    Abstract class is a class that can have both abstract and non-abstract methods while Interface only has abstract methods.

    • Abstract class can have constructors while Interface cannot.

    • A class can implement multiple interfaces but can only inherit from one abstract class.

    • Abstract class can have instance variables while Interface cannot.

    • Abstract class can provide default implementation for some methods while Interface canno...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - For SDET initial round, they check on day to day basic things and you approach to their problem.

Skills evaluated in this interview

Interview questions from similar companies

I applied via Campus Placement and was interviewed before Nov 2021. There were 3 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 - Coding Test 

Strings, Arrays, OOPS, Data structures

Round 3 - Technical 

(3 Questions)

  • Q1. 1:1 to test problem solving and analytical ability, String fundamentals in OOPS and DS will give a upper edge.
  • Q2. Find the max element in the array
  • Ans. 

    Find the max element in the array

    • Iterate through the array and compare each element with a variable storing the current max value

    • Use built-in functions like Math.max() or spread operator to find the max value

    • Consider edge cases like empty array or array with negative values

  • Answered by AI
  • Q3. Couldn't remember the second question

Interview Preparation Tips

Interview preparation tips for other job seekers - Do not give up if you don't know the answer, Answers need not be complex. Use simple concepts to answer complex problem

Skills evaluated in this interview

I applied via Campus Placement

Interview Questionnaire 

3 Questions

  • Q1. Tell me one thing about you that's not listed on your resume
  • Ans. 

    I am an avid traveler and have visited over 20 countries

    • I love experiencing new cultures and trying new foods

    • I have backpacked through Europe and Asia

    • I have volunteered in orphanages in Cambodia and Nepal

  • Answered by AI
  • Q2. When you hear InMobi, what's the first word that comes in your head?
  • Ans. 

    Mobile advertising platform

    • Adtech

    • Mobile marketing

    • App monetization

  • Answered by AI
  • Q3. The office of InMobi technologies has 10 floors, each with 300 employees. In the morning (7-8 AM), the building sees 3000 employees entering and waiting in a queue for 3 lifts. In the morning, everyone goe...

Interview Preparation Tips

Round: Resume Shortlist
Experience: The first round was a resume shortlist, which I think was on the basis of programming and coding courses (and projects) taken along with your CGPA. Out of 10 shortlisted people, I knew 4 and all of us were 9 pointers. The rest who I didn't know turned out to be 9 pointers as well! :P
Out of 10 shortlisted people, 3 (including me) were from ECE and the rest were from CS. Even though InMobi was open for Mathematics & Computing, no person from MnC dept. was in the shortlist. (Presumably due to their CGPAs or some other criterion that I'm not in the knowledge of.)
Tips: i) High CGPA is a must (We're talking above 9, at the end of 2nd year for CS/ECE and 3rd year for MnC)
ii)Taking programming and algorithm courses and projects is important, as that must be visible in your resume.

Round: Puzzle Interview
Experience: One special thing about the interviews, you're asked not to wear any formals! That actually helps in taking the tension off of things!
It's simple logic, after that. Increase the lift's speed (taking in mind of the safety), collecting usage data, optimising the lift's floor-stoppage according to that.
As told after the interview, the interviewer is just observing how you think and approach a problem.

One odd thing was not being asked about any coding/algorithm questions even though the profile was for a software engineer.

After this question, I was asked if I had any questions to ask. I simply stated that the work environment and culture affected me as much as the profile I'm applying for. Thus, the drive and motivation of the people who work there is also very important. So I asked what are the companies' values which the employees believe in, too.
Tips: Stay confident, don't let any tension get to your head.
In the future, InMobi may start asking coding questions too in the interviews. or change the selection procedure, which will be communicated in the PPT of InMobi.
Whatever may happen, the first round should show your zeal to solve problems, your creativity in trying different approaches, and applying logic to find the best solution.

Round: HR Interview
Experience: OK! There were a lot of questions asked since the interview was more like a conversation taking place. Like in ANY conversation, keep proper eye contact, smile and be approachable for any questions. Show enthusiasm in your voice and your answers. The interviewer asked me questions about
i)My resume, and all the activities that I'd listed there. (eg: Why did you enlist in this course? Do you like coding?)
ii)Why programming, how does it interest you?
iii)Basic questions about InMobi, like 'What do you know about us after attending the PPT?' and 'Why InMobi'

Since I had done quite a lot of marketing activities, I was also asked about that. Will you do an MBA in the future? What all did you do for marketing? I had a strong background in digital marketing, and we had a little chat about mobile marketing and what's the future of mobile advertising.
Tips: Smile, for god's sake! It's a conversation about you, do all the basic things to improve the conversational experience.
Small things like greeting the interviewer, smiling, proper eye contact, and speaking properly are paramount.

Like in any HR interview, make sure you know yourself and your resume properly, so that you don't phase out in the interview when asked some 'unexpected' question. (since that's when they know thatyou might be lying/exaggerating). Hence introspect enough before sitting the interviews.

General Tips: Make sure you're able to convince yourself and the interviewers for why do you want to work in Inmobi Technolgies.

I've already shared the rest in previous sections! :)

2 people out of 10 were selected for this internship experience, so make sure you prepare well! All the best! :D

Skill Tips: I don't think that this adds on as a skill, but InMobi wants to create a huge impact on the mobile world and the mobile advertising sector.
Your knowledge about this sector in general could help you strike good conversations (at least in the HR round).
Skills: Logic, Problem Solving Abilties, Creativity, Communication Skills
Duration: 2.5
College Name: IIT Kharagpur
Motivation: I'm a gadget geek from my childhood. The mobile industry amazes me as it's been the biggest change-bringer in the modern world. InMobi as a company wants to create a huge impact in the mobile advertising space and mobile advertising! And seeing their products that they offer in this domain had me thinking that they're doing something unique and awesome!
The work culture of InMobi is just amazing, right from flexible work hours to the epic office they have in Bangalore full of awesome people working towards that one goal! Also, InMobi offers their employees opportunities to shift between various verticals if they want to. All of this (along with a good compensation ;-) ) was enough motivation for me to apply!
Funny Moments: When I was asked whether I was in the third year, I said yes, and then said, usually people think that I'm still in high school!
We had a good laugh on that one! :P

Otherwise also, the entire procedure was relaxed and fun in general.

Interview Questionnaire 

9 Questions

  • Q1. Find Maximum sub sequence sum in an array ?
  • Ans. 

    Maximum sub sequence sum in an array

    • Use Kadane's algorithm

    • Initialize max_so_far and max_ending_here to 0

    • Iterate through the array and update max_ending_here and max_so_far

    • Return max_so_far

  • Answered by AI
  • Q2. What do you understand by the endianness of the system ? How do you find out the the type of endianness ?
  • Ans. 

    Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.

    • Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.

    • Endianness can affect the way data is transmitted between systems.

    • To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...

  • Answered by AI
  • Q3. Sort an array which consists of 0's and 1's only
  • Ans. 

    Sort an array of 0's and 1's only.

    • Use two pointers, one at the beginning and one at the end of the array.

    • Swap 0's from the beginning with 1's from the end until the pointers meet.

    • Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.

  • Answered by AI
  • Q4. A question on applications of minimum spanning tree, apply prim's or kruskal's algorithm
  • Q5. What do you understand by Heaps, max and min heaps ?
  • Ans. 

    Heaps are data structures used to efficiently find the maximum or minimum element in a collection.

    • Max heap: parent nodes are always greater than or equal to child nodes

    • Min heap: parent nodes are always smaller than or equal to child nodes

    • Heaps are commonly used in priority queues and sorting algorithms

    • Heap operations include insert, delete, and extract max/min

    • Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a

  • Answered by AI
  • Q6. What do you understand by hashing ? questions on application of hashing
  • Q7. Find 3 nos a,b and c in an array where a+b = c
  • Ans. 

    Find 3 numbers in an array where a+b=c.

    • Loop through the array and check for all possible combinations of a and b.

    • Use a hash table to store the values of a and b, and check if c is present in the hash table.

    • Sort the array and use two pointers to find a and b, and then check if their sum equals c.

  • Answered by AI
  • Q8. Some puzzles, as the other interviewee said, but not asked to me
  • Q9. Questions on Dynamic programming

Interview Preparation Tips

College Name: NA

Skills evaluated in this interview

Interview Questionnaire 

3 Questions

  • Q1. Algorithms on arrays and strings (coding)
  • Ans. 

    Algorithms for manipulating arrays and strings in coding

    • Use sorting algorithms like quicksort and mergesort for arrays

    • Use string manipulation functions like substring and replace for strings

    • Use dynamic programming for optimizing solutions to array and string problems

  • Answered by AI
  • Q2. Distributed Database Design
  • Q3. Large scale Ad Server Design
  • Ans. 

    Designing a large scale Ad Server

    • Use distributed systems for scalability

    • Implement caching for faster ad delivery

    • Ensure high availability and fault tolerance

    • Use real-time bidding for efficient ad placement

    • Implement fraud detection mechanisms

    • Ensure compliance with privacy regulations

  • Answered by AI

Interview Preparation Tips

Round: Interview
Experience: They tested on thought-process during design problems. What problems are with the current solution I suggested and how to improve it...
Tips: Hints from interviewer are very helpful
Keep talking while you are thinking

Skills: Algorithms, Thinking Skills, Coding
College Name: IIT KHARAGPUR

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

2 Medium level DSA question

Round 2 - Technical 

(2 Questions)

  • Q1. Mirror binary tree
  • Q2. Optimally find n^m
  • Ans. 

    Use the exponentiation by squaring algorithm to optimally find n^m.

    • Use the exponentiation by squaring algorithm to reduce the number of multiplications needed.

    • Divide the exponent by 2 and recursively calculate the result.

    • Handle the cases when the exponent is even or odd separately.

    • Example: n^5 = n * n^2 * n^2

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Edit distance problem
  • Ans. 

    The edit distance problem involves finding the minimum number of operations required to transform one string into another.

    • The edit distance problem can be solved using dynamic programming.

    • Common operations include insertion, deletion, and substitution of characters.

    • Example: Given strings 'kitten' and 'sitting', the edit distance is 3 (substitute 'k' with 's', insert 'g', substitute 'n' with 'g').

  • Answered by AI
  • Q2. Light switch puzzle

Skills evaluated in this interview

I applied via LinkedIn and was interviewed in Sep 2022. There were 3 interview rounds.

Round 1 - Coding Test 

2 coding , 2 SQL with some quants

Round 2 - Technical 

(1 Question)

  • Q1. Remove redundant parentheses in a expression
  • Ans. 

    Remove redundant parentheses in a expression

    • Identify the innermost parentheses

    • Evaluate the expression inside the innermost parentheses

    • Replace the innermost parentheses with the evaluated expression

    • Repeat until no more redundant parentheses exist

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Why do you want to join Chargebee?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident and focus on your strength and if you screw up a part don’t feel bad

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

A coding test on hackerrank with some basic graph problems

Round 2 - Technical 

(1 Question)

  • Q1. The interviewer asked about my projects

I applied via Company Website and was interviewed in Sep 2020. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Coding and solution architecture

Interview Preparation Tips

Interview preparation tips for other job seekers - It’s one good interview worth to attend
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Gainsight Sdet (Software Development Engineer in Test) Salary
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₹8.5 L/yr - ₹15 L/yr
41% less than the average Sdet (Software Development Engineer in Test) Salary in India
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