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Sigmoid Interview Questions, Process, and Tips

Updated 22 Feb 2025

Top Sigmoid Interview Questions and Answers

View all 52 questions

Sigmoid Interview Experiences

Popular Designations

59 interviews found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Nov 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. DSA problem - DFS in graphs
  • Ans. 

    DFS (Depth First Search) is a graph traversal algorithm that explores as far as possible along each branch before backtracking.

    • DFS is implemented using a stack data structure or recursion.

    • It starts at a selected node and explores as far as possible along each branch before backtracking.

    • DFS can be used to find connected components, detect cycles, and solve maze problems.

    • Example: In a graph with nodes A, B, C, and edges ...

  • Answered by AI
  • Q2. DSA problem - minimum stack
  • Ans. 

    Implement a stack that supports push, pop, top, and retrieving the minimum element in constant time.

    • Use two stacks - one to store the actual elements and another to store the minimum values encountered so far.

    • When pushing an element, check if it is smaller than the current minimum and push it to the min stack if so.

    • When popping an element, check if it is the current minimum and pop from the min stack if so.

    • Top operatio...

  • Answered by AI
Round 2 - Coding Test 

Data Structure and algorithms with a little bit of system design and scaling.

Skills evaluated in this interview

Software Development Engineer 1 Interview Questions asked at other Companies

Q1. 4. Design a system for making table reservations at a restaurant.
View answer (1)

Associate Lead Data scientist Interview Questions & Answers

user image Anonymous

posted on 3 Apr 2023

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

I applied via Naukri.com and was interviewed in Oct 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 tips
Round 2 - Technical 

(1 Question)

  • Q1. Questions around core data science concepts. Random forest, xgboost, decision trees, clustering
Round 3 - Case Study 

Case around demand forecasting and customer churn

Round 4 - HR 

(1 Question)

  • Q1. Discussion of strengths, previous work ex

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare resume prohects well. sql joins, subquery, conditions, python. Structured approach for case solving
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 

Two easy questions two wasy questions two easy questions two easy questions

Round 3 - Technical 

(2 Questions)

  • Q1. Technical interviews was very easy techijcal interviews was very easy very easy very easy
  • Q2. Interviews was conducted in advance of a news conference in the United Kingdom and the European government on Tuesday

Interview Preparation Tips

Interview preparation tips for other job seekers - Ghar was the second man killed by an twowwywiwywuw The new rules would be similar y

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (169)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Sep 2023. There were 2 interview rounds.

Round 1 - Coding Test 

Easy to Medium Leetcode Questions

Round 2 - One-on-one 

(2 Questions)

  • Q1. Explain the projects that you have done.
  • Ans. 

    I have worked on projects involving predictive modeling, natural language processing, and machine learning algorithms.

    • Developed a predictive model to forecast sales for a retail company

    • Implemented sentiment analysis using NLP techniques on customer reviews

    • Utilized machine learning algorithms to classify spam emails

  • Answered by AI
  • Q2. Resoning Question

Data Science Associate Interview Questions asked at other Companies

Q1. You need to increase sales in Domino's Indonesia. What factors in data would you consider? Also explain your methodology in creating a CLM for increasing the ROI
View answer (1)

Sigmoid interview questions for popular designations

 Data Engineer

 (5)

 Software Developer

 (5)

 Software Development Engineer II

 (5)

 Data Scientist

 (4)

 Sde1

 (4)

 Senior Data Engineer

 (3)

 Software Engineer

 (3)

 Data Analyst

 (2)

ASDE Interview Questions & Answers

user image Anonymous

posted on 25 Mar 2023

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed in Feb 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Properly align and format text in your resume. A recruiter will have to spend more time reading poorly aligned text, leading to high chances of rejection.
View all tips
Round 2 - Aptitude Test 

There is contest hosted on hacker rank?

Round 3 - Coding Test 

The interview is on problem solving round. The round is of 1 hours they will ask you medium level gfg data structure questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Solve the medium level problem form gfg. Manily they will ask the question from array stack queue

Get interview-ready with Top Sigmoid Interview Questions

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

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

Round 1 - Aptitude Test 

It was basic with puzzles and sql

Round 2 - Case Study 

Case study about a pharma company entering a new market, customer segmentation and also past projects discussion.

Data Scientist Interview Questions asked at other Companies

Q1. Special Sum of ArrayYou have been given an array/list ‘arr’ of length ‘N’, which contains single digit elements at every index. Your task is to return the sum of all elements of the array. But the final sum should also be a single digit. To... read more
View answer (2)

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 12 Jun 2024

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed before Jun 2023. There were 2 interview rounds.

Round 1 - Coding Test 

Basic Multiple choice questions

Round 2 - Technical 

(2 Questions)

  • Q1. Two sum problem
  • Q2. Check if there is a loop in linked list
  • Ans. 

    Check for a loop in a linked list by using two pointers moving at different speeds.

    • Use two pointers, one moving at a normal speed and another moving at double the speed.

    • If there is a loop, the two pointers will eventually meet at some point.

    • Alternatively, use a hash set to store visited nodes and check for duplicates.

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Sigmoid Data Engineer interview:
  • Python
  • Cloud

Skills evaluated in this interview

Top Sigmoid Data Engineer Interview Questions and Answers

Q1. Next Greater ElementYou are given an array arr of length N. You have to return a list of integers containing the NGE(next greater element) of each element of the given array. The NGE for an element X is the first greater element on the righ... read more
View answer (5)

Data Engineer Interview Questions asked at other Companies

Q1. Optimal Strategy for a GameYou and your friend Ninjax are playing a game of coins. Ninjax place the 'N' number of coins in a straight line. The rule of the game is as follows: 1. Each coin has a value associated with it. 2. It’s a two-playe... read more
View answer (6)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via campus placement at National Institute of Technology (NIT), Raipur and was interviewed before May 2023. There were 3 interview rounds.

Round 1 - Coding Test 

Easy-level questions were asked. One was for coding up BFS of a tree, another was to implement queue using linked list

Round 2 - Coding Test 

Medium level questions were asking related to tree and arrays

Round 3 - HR 

(4 Questions)

  • Q1. What are your hobbies?
  • Q2. How do you see yourself in 5 years?
  • Q3. What was your past work experience like?
  • Q4. What are your strengths and weaknesses?

Associate Software Engineer Interview Questions asked at other Companies

Q1. Triplets with Given SumYou are given an array/list ARR consisting of N integers. Your task is to find all the distinct triplets present in the array which adds up to a given number K. An array is said to have a triplet {ARR[i], ARR[j], ARR[... read more
View answer (4)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
Selected Selected

I applied via Campus Placement and was interviewed before Mar 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Puzzles, problem solving statement (available in gfg)
Round 2 - Technical 

(2 Questions)

  • Q1. Questions from project mentioned in resume
  • Q2. SQL, algorithms basic questions (algos used in the project)

Jr. Data Scientist Interview Questions asked at other Companies

Q1. Implement a Data Structure for selection of a user in a database based on his username in the fastest way possible. (Python)
View answer (1)

I was interviewed in Oct 2021.

Round 1 - Video Call 

(2 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

Started with basic introduction about myself and then 2 DSA problems to be solved on CodeChef or any IDE of your preference. Interviewer was helpful throughout the interview and helped with syntaxes at one point as well.
Parameters tested - 
1. Ability to think of edge test cases.
2. Coding Practices like naming variables and functions properly and using the most suitable access modifiers.
3. Ability to think of time and space complexity and optimise it.
Reaching the correct output was not mandatory but was preferred. Priority to coding practices was given.

  • Q1. 

    Next Greater Element Problem Statement

    You are given an array arr of length N. For each element in the array, find the next greater element (NGE) that appears to the right. If there is no such greater ele...

  • Ans. 

    The task is to find the next greater element for each element in the given array.

    • Iterate through the array from right to left.

    • Use a stack to keep track of the next greater element.

    • Pop elements from the stack until a greater element is found or the stack is empty.

    • If the stack is empty, there is no greater element, so assign -1.

    • If a greater element is found, assign it as the next greater element.

    • Push the current element ...

  • Answered by AI
  • Q2. 

    Zigzag Binary Tree Traversal Problem Statement

    Determine the zigzag level order traversal of a given binary tree's nodes. Zigzag traversal alternates the direction at each level, starting from left to rig...

  • Ans. 

    The zigzag level order traversal of a binary tree is the traversal of its nodes' values in an alternate left to right and right to left manner.

    • Perform a level order traversal of the binary tree

    • Use a queue to store the nodes at each level

    • For each level, alternate the direction of traversal

    • Store the values of the nodes in each level in separate arrays

    • Combine the arrays in alternate order to get the zigzag level order tra

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Started with basic introduction about myself and then 2 DSA problems to be solved on google doc. Interviewer was helpful throughout the interview.
Parameters tested - 
1. Ability to think of edge test cases.
2. Coding Practices like naming variables and functions properly and using the most suitable access modifiers.
3. Ability to think of time and space complexity and optimise it.
4. Making it to the correct output.

Reaching the correct output was mandatory in best possible time comlexity.

  • Q1. 

    Problem: Search In Rotated Sorted Array

    Given a sorted array that has been rotated clockwise by an unknown amount, you need to answer Q queries. Each query is represented by an integer Q[i], and you must ...

  • Ans. 

    This is a problem where a sorted array is rotated and we need to search for given numbers in the array.

    • The array is rotated clockwise by an unknown amount.

    • We need to search for Q numbers in the rotated array.

    • If a number is found, we need to return its index, otherwise -1.

    • The search needs to be done in O(logN) time complexity.

    • The input consists of the size of the array, the array itself, the number of queries, and the q

  • Answered by AI
  • Q2. 

    K-th Element of Two Sorted Arrays

    You are provided with two sorted arrays, arr1 and arr2, along with an integer k. By merging all elements from arr1 and arr2 into a new sorted array, your task is to ident...

  • Ans. 

    The task is to find the kth smallest element of a merged array created by merging two sorted arrays.

    • Merge the two sorted arrays into a single sorted array

    • Return the kth element of the merged array

  • Answered by AI
Round 3 - HR 

Round duration - 40 minutes
Round difficulty - Easy

I was asked to introduce myself and general family background check and then discussion around salary negotiation.

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from TIET - Thapar Institute of Engineering And Technology. I applied for the job as Data Engineer in BangaloreEligibility criteriaDecent work experience (for SDE-1 1-2 years experience was expected), self projects in any domain,Sigmoid interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, OOPS, Dynamic ProgrammingTime required to prepare for the interview - 2 monthsInterview preparation tips for other job seekers

Tip 1 : Practice popular questions from Arrays, Binary Trees, LinkedLists from CodeStudio's Interview Problems
Tip 2 : Make sure you are aware of calculating the time and space complexity for every problem you're coding.
Tip 3 : Prepare through Mock Interviews to practice explaining your approach while solving in an actual interview.

Application resume tips for other job seekers

Tip 1 : Describe best of your projects in minimum words. Don't forget to add buzz words like REST APIs/ DB Indexing/ Benchmarking etc if you worked on backend.
Tip 2 : Don't add school achievements like Olympiads or Class Topper in your resume.
Tip 3 : If you've some work experience, put it in a way ,you're marketing yourself. Add terms like 'Created/Owned the Project through entire SDLC' 
Tip 4 : Make sure you mention how your work experience actually impacted the company. Or how your self project can be actually useful to end user.

Final outcome of the interviewSelected

Skills evaluated in this interview

Top Sigmoid Data Engineer Interview Questions and Answers

Q1. Next Greater ElementYou are given an array arr of length N. You have to return a list of integers containing the NGE(next greater element) of each element of the given array. The NGE for an element X is the first greater element on the righ... read more
View answer (5)

Data Engineer Interview Questions asked at other Companies

Q1. Optimal Strategy for a GameYou and your friend Ninjax are playing a game of coins. Ninjax place the 'N' number of coins in a straight line. The rule of the game is as follows: 1. Each coin has a value associated with it. 2. It’s a two-playe... read more
View answer (6)

Sigmoid Interview FAQs

How many rounds are there in Sigmoid interview?
Sigmoid interview process usually has 2-3 rounds. The most common rounds in the Sigmoid interview process are Technical, Coding Test and One-on-one Round.
How to prepare for Sigmoid 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 Sigmoid. The most common topics and skills that interviewers at Sigmoid expect are Data Analytics, Python, SQL, Machine Learning and Data Science.
What are the top questions asked in Sigmoid interview?

Some of the top questions asked at the Sigmoid interview -

  1. Given a non-decreasing array, how can I determine the indices of an element X w...read more
  2. How you will figure out how many WhatsApp user are there in wo...read more
  3. in an integer array where element represent stock price and index represent day...read more
How long is the Sigmoid interview process?

The duration of Sigmoid interview process can vary, but typically it takes about less than 2 weeks to complete.

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Sigmoid Interview Process

based on 62 interviews

Interview experience

3.7
  
Good
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based on 121 reviews

3.2/5

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3.2

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3.1

Company culture

2.8

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3.0

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