Publicis Sapient Senior Software Engineer Interview Questions and Answers

Q1. Java collections future
Ans. 
Java collections are evolving with new features for better performance, usability, and integration with modern programming paradigms.
• Introduction of new collection types like Stream API for functional-style operations.

• Improvements in performance with concurrent collections like ConcurrentHashMap.

• Enhanced support for immutability with List.of(), Set.of(), and Map.of() methods.

• Integration with reactive programming throug...read more
Answered by AI
Add your answer
Q2. Sql kafka java 8 multithreading
Add your answer

Q1. Simple task to fetch cart and display items in the cart
Ans. 
Fetch cart items and display them
• Create a function to fetch cart items from database

• Display the items in the cart on the user interface

• Handle empty cart scenarios

• Consider pagination for large number of items
Answered by AI
Add your answer
Q2. React hooks, life cycle methods, error boundaries, hoc
Add your answer

Q1. Simple task to fetch characters and their movies
Ans. 
Fetch characters and their movies
• Use API like IMDb or The Movie Database to fetch movie data

• Parse the data to extract characters and their associated movies

• Store the characters and movies in an array of strings
Answered by AI
Add your answer

Q1. Culture based questions
Add your answer

Q1. Questions related to HTML and CSS ( majorly based on box-model, flex-box, positioning). One hands-on question based on CSS and follow-up questions
Add your answer
Q2. Create a Login form and validate email input using Vanilla JS.
Ans. 
Create a Login form with email validation using Vanilla JS.
• Create a form in HTML with input fields for email and password

• Use JavaScript to validate the email input using regular expressions

• Display error messages if the email input is not in the correct format
Answered by AI
Add your answer
Q3. API fetching, CRUD operation and then DOM Manipulation using pure JS.
Add your answer
Q4. Questions related to Web Accessibility (won't ask separately if you answer smartly for SEMANTIC ELEMENT BENEFIT HTML question, which will be there for sure)
Add your answer
Q5. Questions related to Web Security.
Add your answer

Q1. API fetching and state management using useReducer and useContext
Ans. 
Using useReducer and useContext for API fetching and state management in React applications.
• useReducer is ideal for managing complex state logic, especially when the state depends on previous values.

• useContext allows for sharing state across components without prop drilling, making it easier to manage global state.

• Example: Create a context for user data and useReducer to handle actions like FETCH_USER, UPDATE_USER.

• Comb...read more
Answered by AI
Add your answer
Q2. Questions on React Hooks
Add your answer
Q3. Questions on Error Boundary
Add your answer
Q4. Questions on higher order components
Add your answer
Q5. Questions on children and render props
Add your answer
Q6. Some Basic questions on Jest/ React Testing Library
Add your answer

Q1. Asked Typical HR questions like past projects, reason to switch, experience with cross-functional teams etc.
Add your answer

MCQ Questions from various topics in java, spring, unit testing, multithreading and other OOPS concepts

Need to develop microservices with multiple APIs.

Q1. They will ask questions from various topics. They expect you to answer 100/100. They will simply waste your time. 1 (MCQ) + 2 (CASE STUDY) + 2 (Technical Interview). Even though you answer 80 - 90 percent ...read more
Add your answer