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Keyloop Lead Developer Interview Questions and Answers

Updated 23 Jul 2023

Keyloop Lead Developer Interview Experiences

1 interview found

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

I applied via Naukri.com and was interviewed before Jul 2022. There were 5 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Coding Test 

. NET CORE design patterns oops and linq queries AWS reactjs

Round 3 - Technical 

(1 Question)

  • Q1. . NET CORE linq queries design patterns object oriented programming
Round 4 - Technical 

(1 Question)

  • Q1. . NET CORE design patterns object oriented programming reactjs aws
Round 5 - HR 

(1 Question)

  • Q1. Company policies SALARY discussion leave policy insurance and perks

Interview Preparation Tips

Interview preparation tips for other job seekers - Good technical rounds
And great experience

Lead Developer Jobs at Keyloop

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Interview questions from similar companies

Interview Questionnaire 

9 Questions

  • Q1. Questions related to the work done at my previous company
  • Q2. Find if a given directed graph is cyclic or not
  • Ans. 

    To check if a directed graph is cyclic or not

    • Use Depth First Search (DFS) algorithm to traverse the graph

    • Maintain a visited set to keep track of visited nodes

    • Maintain a recursion stack to keep track of nodes in the current DFS traversal

    • If a node is visited and is already in the recursion stack, then the graph is cyclic

    • If DFS traversal completes without finding a cycle, then the graph is acyclic

  • Answered by AI
  • Q3. You have a stream of bytes from which you can read one byte at a time. You only have enough space to store one byte. After processing those bytes, you have to return a random byte. Note: The probability of...
  • Ans. 

    Return a random byte from a stream of bytes with equal probability.

    • Create a variable to store the count of bytes read

    • Create a variable to store the current random byte

    • For each byte read, generate a random number between 0 and the count of bytes read

    • If the random number is 0, store the current byte as the random byte

    • Return the random byte

  • Answered by AI
  • Q4. Find if a given Binary Tree is BST or not
  • Ans. 

    Check if a binary tree is a binary search tree or not.

    • Traverse the tree in-order and check if the values are in ascending order.

    • For each node, check if its value is greater than the maximum value of its left subtree and less than the minimum value of its right subtree.

    • Use recursion to check if all nodes in the tree satisfy the above condition.

  • Answered by AI
  • Q5. Devise an algorithm to determine the Nth-to-Last element in a singly linked list of unknown length. If N = 0, then your algorithm must return the last element. You should parse the list only once
  • Ans. 

    Algorithm to find Nth-to-Last element in a singly linked list of unknown length

    • Traverse the list and maintain two pointers, one at the beginning and one at Nth node from beginning

    • Move both pointers simultaneously until the second pointer reaches the end of the list

    • The first pointer will be pointing to the Nth-to-Last element

    • If N=0, return the last element

    • Parse the list only once

  • Answered by AI
  • Q6. Given an array of integers, print all possible permutations. Also explain your approach
  • Ans. 

    Print all possible permutations of an array of integers

    • Use recursion to swap elements and generate permutations

    • Start with the first element and swap it with each subsequent element

    • Repeat the process for the remaining elements

    • Stop when all elements have been swapped with the first element

    • Print each permutation as it is generated

  • Answered by AI
  • Q7. Design a Stack DS that also prints in O(1) the minimum element you pushed in the stack
  • Ans. 

    Design a stack that prints the minimum element pushed in O(1)

    • Use two stacks, one for storing elements and another for storing minimums

    • When pushing an element, compare it with the top of minimum stack and push the smaller one

    • When popping an element, pop from both stacks

    • To get the minimum element, just return the top of minimum stack

  • Answered by AI
  • Q8. Given a linked list with loop, how would you find the starting point of the loop ?
  • Ans. 

    To find the starting point of a loop in a linked list, use Floyd's cycle-finding algorithm.

    • Use two pointers, one moving at twice the speed of the other.

    • When they meet, move one pointer to the head of the list and keep the other at the meeting point.

    • Move both pointers one step at a time until they meet again, which is the starting point of the loop.

  • Answered by AI
  • Q9. Find a number a matrix mat[m][n] where all the rows and columns are sorted non-decreasingly. What will be the complexity of the solution
  • Ans. 

    To find a number in a matrix where all rows and columns are sorted non-decreasingly. Complexity of the solution.

    • Use binary search to find the number in each row and column

    • Start from the top-right corner or bottom-left corner to optimize search

    • Time complexity: O(m log n) or O(n log m) depending on the starting corner

  • Answered by AI

Interview Preparation Tips

Skills: Algorithm, Data structure
College Name: Na

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Referral

Round 1 - Coding Test 

Java internals, coding questions 2sum

Round 2 - Technical 

(2 Questions)

  • Q1. Hld of your previous project
  • Ans. 

    Developed a web-based project management tool for tracking tasks and deadlines.

    • Used React.js for front-end development

    • Implemented RESTful APIs for backend using Node.js and Express

    • Utilized MongoDB for database storage

    • Incorporated authentication and authorization features for user security

  • Answered by AI
  • Q2. Question related to self build projects
Round 3 - HR 

(2 Questions)

  • Q1. Salary negotiation
  • Q2. Location constrain if any
  • Ans. 

    Open to relocation for the right opportunity

    • Willing to relocate for the right job opportunity

    • Flexible with location for the right role

    • Open to considering different locations for the right position

  • Answered by AI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview before Feb 2022.

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 tips
Round 2 - Technical 

(1 Question)

  • Q1. Linked list (detect loop, reverse, delte a node) tree (height, DFS) graph theory concept C++ basic questions
Round 3 - One-on-one 

(1 Question)

  • Q1. Total 3 round of Technical interviews.

Interview Preparation Tips

Interview preparation tips for other job seekers - C++ basics, Algo and Data structure and some basic concept of graph theory.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(1 Question)

  • Q1. Tell me about yourself, availability, visa-related questions
Round 2 - Coding Test 

Dynamic programming questions, longg time to complete the 2 questions

Round 3 - Group Discussion 

Problem solving : a clock with 3 hands, no numbers written, guess what it is

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

1 hour 3 questions easy to medium leetcode.

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

I applied via Campus Placement and was interviewed in Apr 2023. 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 tips
Round 2 - Coding Test 

Platform - Mettl
3 Questions of medium level difficulty to do in 2 hours, typically contain concepts like DSA, DP etc.

Round 3 - Technical 

(3 Questions)

  • Q1. What is structure padding?
  • Ans. 

    Structure padding is the insertion of unused bytes between structure members to align them on memory boundaries.

    • Padding is added to ensure that each member of a structure starts at a memory address that is a multiple of its size.

    • Padding is compiler-dependent and can vary between different platforms and architectures.

    • Padding can affect the size of a structure and the performance of the program.

    • Example: struct example { ...

  • Answered by AI
  • Q2. College Project discussion
  • Q3. Form a dictionary from name.
  • Ans. 

    Forming a dictionary from name

    • Create an empty dictionary

    • Iterate through each character in the name

    • Add the character as a key and its frequency as value in the dictionary

  • Answered by AI

Skills evaluated in this interview

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

I applied via Naukri.com and was interviewed in Mar 2023. There were 2 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 tips
Round 2 - Technical 

(2 Questions)

  • Q1. Reactive forms in angular
  • Ans. 

    Reactive forms in Angular are a way to build forms in a reactive and scalable way.

    • Reactive forms use an underlying data model to manage form data.

    • They allow for dynamic form creation and validation.

    • They can be used with complex form structures and nested forms.

    • They provide a more scalable and maintainable approach to form development.

    • Example: Creating a reactive form with FormBuilder in Angular.

  • Answered by AI
  • Q2. Dependency injection

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep doing practical things

Skills evaluated in this interview

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

(1 Question)

  • Q1. Copy constructor implementation it was based on
Round 2 - Technical 

(1 Question)

  • Q1. Binary search question on array
Round 3 - HR 

(1 Question)

  • Q1. Experience and expectations on salary

I applied via Naukri.com and was interviewed in Feb 2022. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Basic node.js and javascript.
Round 2 - One-on-one 

(1 Question)

  • Q1. More discussion towards the existing project.

Interview Preparation Tips

Interview preparation tips for other job seekers - Company is good. The process was quite clear and transparent.

Keyloop Interview FAQs

How many rounds are there in Keyloop Lead Developer interview?
Keyloop interview process usually has 5 rounds. The most common rounds in the Keyloop interview process are Technical, Resume Shortlist and Coding Test.
How to prepare for Keyloop Lead Developer 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 Keyloop. The most common topics and skills that interviewers at Keyloop expect are MySQL, JQuery, Javascript, .Net and .Net Core.
What are the top questions asked in Keyloop Lead Developer interview?

Some of the top questions asked at the Keyloop Lead Developer interview -

  1. Company policies SALARY discussion leave policy insurance and pe...read more
  2. . NET CORE linq queries design patterns object oriented programm...read more
  3. . NET CORE design patterns object oriented programming reactjs ...read more

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Keyloop Lead Developer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
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Keyloop Lead Developer Reviews and Ratings

based on 1 review

4.0/5

Rating in categories

4.0

Skill development

4.0

Work-life balance

4.0

Salary

4.0

Job security

4.0

Company culture

4.0

Promotions

4.0

Work satisfaction

Explore 1 Review and Rating
Lead Developer

Hyderabad / Secunderabad

14-16 Yrs

₹ 34.5-36 LPA

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