Publicis Sapient Full Stack Developer Interview Questions, Process, and Tips

Quantitative , figure ,mcq question based on tech stack and 2 coding question which are basic. 90 minute time limit.

Q1. Angular question
Add your answer
Q2. .net question and sql question
Add your answer

There are 4 coding questions in first round

Q1. Some basic statistics questions and data structure questions
Add your answer

Q1. How did you work on your previous project (processes)?
Add your answer
Q2. How do you work on complex tasks? Describe your approach
Ans. 
I break down complex tasks into smaller, manageable steps and prioritize them based on dependencies and deadlines.
• Analyze the requirements and understand the problem thoroughly

• Break down the task into smaller subtasks

• Prioritize the subtasks based on dependencies and deadlines

• Create a plan or roadmap to guide the development process

• Implement each subtask one by one, ensuring proper testing and quality assurance

• Regularly...read more
Answered by AI
Add your answer

Coding related questions. They may ask System design also for experienced developer role.

Q1. Prepare System design interview questions.
Add your answer
Q2. How security or authentication is implemented in your project.
Ans. 
Security and authentication are implemented using JWT tokens and role-based access control.
• JWT tokens are generated upon successful login and sent in the Authorization header of each request

• Role-based access control is used to restrict access to certain endpoints based on user roles

• Sensitive data is encrypted before storing in the database

• Two-factor authentication is implemented for additional security
Answered by AI
Add your answer
Q3. Tell me about OAuth authenticaion.
Ans. 
OAuth authentication is a protocol that allows secure authorization of third-party applications to access user data without sharing credentials.
• OAuth stands for Open Authorization

• It allows users to grant access to their resources stored on one site to another site without sharing their credentials

• OAuth uses tokens instead of passwords for secure access

• OAuth 2.0 is the current version and is widely used for authenticati...read more
Answered by AI
Add your answer
Q4. React related question also they asked.
Add your answer

Q1. Basics Javascript
Add your answer

Q1. Questions on OOPS mainly inheritance Questions on Core Java Tricky questions on collections Questions on Java 8
Add your answer
Q2. Questions on JavaScript What is a closure
Add your answer

Round duration - 100 minutes
Round difficulty - Hard

The test had 3 parts:
1. Aptitude - 20 questions to be done in 25 minutes. (Medium level)
2. Technical MCQs - 25 questions to be done in 35 minutes. (Medium-Hard level) (HTML, JS, CSS, SQL)
3. Coding - 2 out of 3 questions to be done in 40 minutes. 20 minutes were allotted for each question. No switching between the codes was allowed. (1-easy, 2-medium in total)

Q1. Count Set Bits
You are given a positive integer ‘N’. Your task is to find the total number of ‘1’ in the binary representation of all the numbers from 1 to N.
Since the count of ‘1’ can be huge, you are ...read more
Ans. Brute Force
The key idea is to count the number of set bits in each number from 1 to n and return the sum of all set bits.
 
The algorithm will be -
 
• For each i from 1 to N -
  • We find the number of set bits for each i.
  • This can be done using a built-in function (for eg builtin_popcount in c++) or by simply using a loop and left shifting the number and finding if the last place is set or not.
• Finally we store the coun...read more
Answered by CodingNinjas
View 1 more answer
Q2. Smallest number whose digits multiplication is ‘N’
You are given a positive integer ‘N’. The task is to find and return the smallest number, ‘M’, such that the multiplication of all the digits in ‘M’ is eq...read more
Ans. Brute force
A simple approach will be to iterate through all possible ‘M’ values, i.e., from ‘1’ to ‘2147483647’ (the largest value that a signed 32-bit integer field can hold), and check if their digit multiplication is equal to ‘N’.
 
Algorithm:
• Run a loop where ‘i’ ranges from ‘1’ to ‘2147483647’:
  • Set ‘CUR = i’. The current ‘M’ value.
  • Set ‘MUL = 1’. Use it to store the digit multiplication of ‘M’.
  • Run a loop until ‘cu...read more
Answered by CodingNinjas
View 1 more answer

Round duration - 45 minutes
Round difficulty - Medium

It was the first face-to-face technical round. The medium was ModernHire. There was only 1 member in the interview panel. This round tested me on C fundaments, Operating System basics, and problem-solving skills.
Questions asked:
What are the TRUNCATE, DELETE and DROP statements?
What are void elements in HTML?
Define multipart form data?
1. How does the C compiler works?
2. What are deadlocks and why does it happen?
3. How to resolve deadlock?
4. What is a kernel?
5. How to dynamically allocate memory in C?
6. What is makefile?
7. What is multi-threading and why is it useful?
8. What is the need for synchronization in OS?
9. How do you run a program of 10 GB using 2 GB memory?
10. What are semaphores and mutex?
11. How is HashMap implemented?
12. Difference between linker and loader.
13. Importance of header files.
14. What is Dynamic binding?
15. What type of database should you use where transactions are involved?
16. Brief discussion on the Internship experience.

Q1. Merge Sort
Given a sequence of numbers ‘ARR’. Your task is to return a sorted sequence of ‘ARR’ in non-descending order with help of the merge sort algorithm.
Example :
Merge Sort Algorithm -

Merge sor...read more
Ans. Recursion
The basic idea is that we divide the given ‘ARR’ into two-part call them ‘leftHalves’ and ‘rightHalves’ and call the same function again with both the parts. In the end, we will get sorted ‘leftHaves’ and sorted ‘righthalves’ which we merge both of them and return a merged sorted ‘ARR’.
We implement this approach with a divide and conquer strategy.
 
Here is the algorithm : 
 
1. Divide ‘ARR’ into two-p...read more
Answered by CodingNinjas
View 1 more answer

Round duration - 50 minutes
Round difficulty - Medium

This was a managerial cum technical round. I was asked to introduce myself (both technical details and hobbies). Then I was asked about my internship experiences and what I learnt from them. After that, he asked me questions about the projects mentioned in my resume. He tested my in-depth knowledge of the technologies that I used. He also asked me about the alternative solutions and the drawbacks of my solution.
After that, he asked me to speak about Operating Systems for 5 minutes without giving a pause. Then he asked me to speak about the OSI model and the TCP/IP model for the next 5-10 minutes again without giving a pause. He appreciated my perfomance and gave me a coding question.
What is User-defined function? What are its various types in SQL. What is an Alias in SQL?
Then he asked me whether I had any questions.

Q1. Find a Node in Linked List
You have been given a singly linked list of integers. Write a function that returns the index/position of integer data denoted by 'N' (if it exists). Return -1 otherwise.
...read more
Ans. Recursive Approach
The steps are as follows:
 
1. If the head is null, return -1 since an empty list will obviously not contain the element that we need to look for.
2. Check whether the head’s data is equal to the element we want to search. Return 0 if it is.
3. Then recurse on the next node from the head and get its answer.
4. If the answer from the recursive call is -1, your answer is also -1 since you already check the head’s d...read more
Answered by CodingNinjas
View 1 more answer

Round duration - 15 minutes
Round difficulty - Easy

Typical HR questions were asked in this round.

Q1. Basic HR Questions
Introduce yourself.
Mention something that is not in your resume.
Why are you fit for this role?
Why HPE?
Plans for higher studies.
Ans. 
Tip 1 : Be Honest
Tip 2 : Be confident.
Tip 3 : Keep a smile always.
Answered by CodingNinjas
Add your answer