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Ecom Express Software Developer Interview Questions and Answers

Updated 16 Oct 2024

Ecom Express Software Developer Interview Experiences

2 interviews found

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

I applied via Approached by Company and was interviewed before Oct 2023. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. DSA ROUND - DP problem
  • Ans. 

    Dynamic Programming problem involving finding the maximum sum of non-adjacent elements in an array.

    • Use dynamic programming to keep track of the maximum sum at each index.

    • At each index, the maximum sum is either the current element plus the sum two indices back, or the sum at the previous index.

    • Example: For array [2, 4, 6, 2, 5], the maximum sum of non-adjacent elements is 13 (2 + 6 + 5).

  • Answered by AI
  • Q2. DSA ROUND - STRING PROBLEM
  • Ans. 

    Find the longest common prefix among an array of strings.

    • Iterate through the characters of the first string and compare with other strings

    • Return the prefix when characters don't match or reach end of any string

    • Example: Input - ['flower', 'flow', 'flight'], Output - 'fl'

  • Answered by AI
Round 2 - One-on-one 

(2 Questions)

  • Q1. PROJECT RELATED QUESTIONS
  • Q2. DESIGN LRU CACHE
  • Ans. 

    LRU cache is a data structure that stores the most recently used items.

    • Use a doubly linked list to keep track of the order of items based on their usage.

    • Use a hashmap to quickly access items in the cache.

    • When a new item is accessed, move it to the front of the linked list.

    • If the cache is full, remove the least recently used item from the end of the linked list.

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Ecom Express Software Developer interview:
  • Dynamic programming
  • Priority queue
Interview preparation tips for other job seekers - Communicate yourself , whether you are able to think about the problem or not .

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in Jun 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Basic to intermediate questions on data structures and django.

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview process easy.

Software Developer Interview Questions Asked at Other Companies

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Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Indeed and was interviewed in Oct 2023. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Behavioural and Experience based questions
  • Q2. Tell be about a time sort of stuff

Interview Preparation Tips

Interview preparation tips for other job seekers - Be sure of your work

I applied via Recruitment Consultant and was interviewed in May 2020. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. What is diameter of Binary Tree? Write full working code.
  • Ans. 

    Diameter of a binary tree is the longest path between any two leaf nodes.

    • Calculate the height of left and right subtrees recursively.

    • Calculate the diameter recursively using the formula max(left_height + right_height + 1, max(left_diameter, right_diameter)).

    • Return the maximum diameter.

  • Answered by AI
  • Q2. Find interchanged terms from an AP, where terms are arranged in series
  • Ans. 

    To find interchanged terms from an AP series

    • Identify the common difference between terms

    • Swap the positions of adjacent terms

    • Check if the new series is also an AP

    • Repeat until no more interchanged terms can be found

  • Answered by AI
  • Q3. Explain database indexing
  • Ans. 

    Database indexing is a technique to improve the performance of database queries.

    • Indexing creates a data structure that allows for faster retrieval of data.

    • Indexes are created on one or more columns of a table.

    • Queries that use indexed columns can be executed faster.

    • Indexes can be clustered or non-clustered.

    • Clustered indexes determine the physical order of data in a table.

    • Non-clustered indexes create a separate structure...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well on basic data structures, operating systems and database.

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Dec 2020. There were 4 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Design a stack that support getmin in O(1) time and O(1) space complexities
  • Ans. 

    Design a stack that supports getmin in O(1) time and O(1) space complexities.

    • Use two stacks, one for storing the actual values and the other for storing the minimum values.

    • When pushing a new value, check if it is smaller than the current minimum value and push it to the minimum stack if it is.

    • When popping a value, check if it is the current minimum value and pop it from the minimum stack if it is.

    • To get the minimum val...

  • Answered by AI
  • Q2. Questions related OS and DBMS
  • Q3. Binary tree traversal
  • Ans. 

    Binary tree traversal is the process of visiting each node in a binary tree exactly once in a specific order.

    • There are three main types of binary tree traversal: inorder, preorder, and postorder.

    • Inorder traversal visits the left subtree, then the root, then the right subtree.

    • Preorder traversal visits the root, then the left subtree, then the right subtree.

    • Postorder traversal visits the left subtree, then the right subt...

  • Answered by AI
  • Q4. LRU cache explanation
  • Ans. 

    LRU cache is a data structure that stores the most recently used items and discards the least recently used items.

    • LRU stands for Least Recently Used

    • It has a fixed size and when the cache is full, the least recently used item is removed to make space for a new item

    • It uses a combination of a doubly linked list and a hash map to achieve O(1) time complexity for both insertion and deletion

    • Example: A web browser cache that ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Good with your programming skills and fundamentals.

Skills evaluated in this interview

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

(2 Questions)

  • Q1. Tell what is your name
  • Ans. 

    My name is John Smith.

    • Full name is John Smith

    • Common name in English-speaking countries

    • No middle name or initial

  • Answered by AI
  • Q2. What do you do in free time
  • Ans. 

    In my free time, I enjoy hiking, playing video games, and learning new programming languages.

    • Hiking in local trails and national parks

    • Playing video games like Overwatch and Minecraft

    • Learning new programming languages like Python and JavaScript

  • Answered by AI
Interview experience
3
Average
Difficulty level
Hard
Process Duration
4-6 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Apr 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Introduce yourself.
  • Ans. 

    I am a software developer with 5 years of experience in Java and Python.

    • Experienced in Java and Python programming languages

    • Worked on various projects involving web development and data analysis

    • Familiar with Agile methodologies and version control systems like Git

  • Answered by AI
  • Q2. Project related questions.

I applied via Approached by Company and was interviewed in Apr 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 - Technical 

(3 Questions)

  • Q1. Involved coding based on the skill set
  • Q2. Questions based on scenario, basic concepts.
  • Q3. Questions to test the depth of understanding of any technology
Round 3 - Behavioral 

(1 Question)

  • Q1. Architecture of current project
  • Ans. 

    The current project follows a microservices architecture.

    • The project is divided into multiple small services that communicate with each other through APIs.

    • Each service is responsible for a specific functionality.

    • The services are deployed independently and can be scaled as per the demand.

    • The project uses Docker containers for easy deployment and management.

    • The communication between services is secured using HTTPS protoc...

  • Answered by AI
Round 4 - HR 

(1 Question)

  • Q1. Salary discussion based on the role

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare all the concepts with good understanding.
Try coding and understanding all the basic concepts and patterns

I was interviewed in Jan 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 95 minutes
Round difficulty - Medium

The 1st round was online coding + MCQ round. It had 3 sections in total to be solved in 95 mins.
Next comes the technical interview. 
The technical interview lasted for about 45 minutes. It started with a basic introduction. Then, she framed some questions from my resume and projects which I have mentioned. Questions were mainly from Data structure, OS, DBMS, SQL. She told me to rate my data structure skill on a scale of 1 to 5.
My interview was at 10:30 am and the interviewer was really nice. She was helping me wherever I was getting stuck.

  • Q1. 

    Fourth Largest Element in the Array

    Given an array consisting of integers, your task is to determine the fourth largest element in the array. If the array does not contain at least four distinct elements,...

  • Ans. 

    Find the fourth largest element in an array, return -2147483648 if not enough distinct elements.

    • Sort the array in descending order

    • Return the fourth element if it exists, else return -2147483648

  • Answered by AI
Round 2 - Face to Face 

(5 Questions)

Round duration - 45 minutes
Round difficulty - Medium

The technical interview lasted for about 45 minutes. It started with a basic introduction. Then, she framed some questions from my resume and projects which I have mentioned. Questions were mainly from Data structure, OS, DBMS, SQL. She told me to rate my data structure skill on a scale of 1 to 5.

  • Q1. 

    Sort 0s, 1s, and 2s Problem Statement

    You are provided with an integer array/list ARR of size 'N' which consists solely of 0s, 1s, and 2s. Your task is to write a solution to sort this array/list.

    Input:

    ...
  • Ans. 

    Sort an array of 0s, 1s, and 2s in linear time with a single scan approach.

    • Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.

    • Iterate through the array once and swap elements based on their values and the pointers.

    • After the single scan, the array will be sorted in place with 0s, 1s, and 2s in order.

  • Answered by AI
  • Q2. 

    Remove Duplicates Problem Statement

    You are given an array of integers. The task is to remove all duplicate elements and return the array while maintaining the order in which the elements were provided.

    ...

  • Ans. 

    Remove duplicates from an array while maintaining order.

    • Use a set to keep track of unique elements.

    • Iterate through the array and add elements to the set if not already present.

    • Convert the set back to an array to maintain order.

  • Answered by AI
  • Q3. Can you describe all the joins in SQL and illustrate them with a Venn diagram?
  • Ans. 

    SQL joins are used to combine rows from two or more tables based on a related column between them.

    • Inner Join: Returns rows when there is at least one match in both tables.

    • Left Join: Returns all rows from the left table and the matched rows from the right table.

    • Right Join: Returns all rows from the right table and the matched rows from the left table.

    • Full Outer Join: Returns rows when there is a match in one of the tabl...

  • Answered by AI
  • Q4. 

    Binary Tree Node Presence Problem

    Determine if a node with a given integer value X exists in a specified binary tree.

    Input:

    The first line of each test case contains the binary tree nodes in level orde...
  • Ans. 

    Check if a node with a given value exists in a binary tree.

    • Traverse the binary tree using depth-first search (DFS) or breadth-first search (BFS) to search for the node with the given value.

    • Use a recursive or iterative approach to implement the search algorithm.

    • Return 'true' if the node with the given value is found, otherwise return 'false'.

  • Answered by AI
  • Q5. 

    Shortest Path in an Unweighted Graph

    The city of Ninjaland is represented as an unweighted graph with houses and roads. There are 'N' houses numbered 1 to 'N', connected by 'M' bidirectional roads. A road...

  • Ans. 

    Find the shortest path in an unweighted graph from house 'S' to house 'T'.

    • Use Breadth First Search (BFS) algorithm to find the shortest path in an unweighted graph.

    • Create a queue to store the current house and its neighbors, and a visited set to keep track of visited houses.

    • Start BFS from house 'S' and stop when reaching house 'T'.

    • Return the path from 'S' to 'T' once 'T' is reached.

    • If multiple shortest paths exist, ret

  • Answered by AI

Interview Preparation Tips

Eligibility criteria7 cgpa and no backlogsMaersk interview preparation:Topics to prepare for the interview - Aptitude, SQL, Data structure, Dynamic Programming, Recursion, C++, Logical reasoningTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Read interview experience before interview
Tip 2 : Think loud about each coding question.

Application resume tips for other job seekers

Tip 1 : No spelling mistake in resume.
Tip 2 : Resume should be in proper format

Final outcome of the interviewSelected

Skills evaluated in this interview

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

(2 Questions)

  • Q1. .net C#, Design pattern,Azure Angular ,
  • Q2. Web Api, SQL Entity Framework

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on new technology and get updated. Logically think and then explain the scenario
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Ecom Express Interview FAQs

How many rounds are there in Ecom Express Software Developer interview?
Ecom Express interview process usually has 2 rounds. The most common rounds in the Ecom Express interview process are One-on-one Round.
How to prepare for Ecom Express Software 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 Ecom Express. The most common topics and skills that interviewers at Ecom Express expect are Agile Methodology, Algorithms, Business Analysis, Coding and Computer science.
What are the top questions asked in Ecom Express Software Developer interview?

Some of the top questions asked at the Ecom Express Software Developer interview -

  1. DSA ROUND - DP prob...read more
  2. DSA ROUND - STRING PROB...read more
  3. DESIGN LRU CA...read more

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Ecom Express Software Developer Interview Process

based on 2 interviews

Interview experience

5
  
Excellent
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Ecom Express Software Developer Salary
based on 50 salaries
₹8.9 L/yr - ₹11.8 L/yr
24% more than the average Software Developer Salary in India
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based on 5 reviews

4.5/5

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3.8

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4.7

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4.2

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4.4

Company culture

3.1

Promotions

4.5

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