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PwC Blockchain Developer Interview Questions, Process, and Tips
PwC Blockchain Developer Interview Experiences
1 interview found
I applied via Approached by Company and was interviewed in Dec 2023. There were 2 interview rounds.
(5 Questions)
- Q1. Complete lifecycle for a blockchain transaction?
- Ans.
The complete lifecycle for a blockchain transaction involves creation, validation, broadcast, inclusion in a block, and confirmation.
Creation of transaction by sender
Validation of transaction by network nodes
Broadcasting of transaction to network
Inclusion of transaction in a block by miners
Confirmation of transaction by consensus of network nodes
- Q2. Can we publish our own cusotom blockchain if yes what are the steps for that??
- Ans.
Yes, you can publish your own custom blockchain by following these steps.
Define the purpose and requirements of your custom blockchain
Choose a consensus mechanism (e.g. Proof of Work, Proof of Stake)
Select a suitable blockchain platform (e.g. Ethereum, Hyperledger)
Develop and deploy the custom blockchain network
Test the network for functionality and security
Launch and promote your custom blockchain to attract users and
- Q3. How we estimate gas for a transaction?
- Ans.
Gas for a transaction is estimated based on the computational resources required to execute the transaction on the blockchain network.
Gas is a unit used to measure the computational work required to process transactions on the blockchain.
Gas cost is determined by the complexity of the transaction and the amount of data being processed.
Developers can estimate gas by using tools like the Ethereum Gas Station or by simula...
- Q4. Difference between proof of work and proof of stack?
- Ans.
Proof of work requires miners to solve complex mathematical puzzles to validate transactions, while proof of stake selects validators based on the amount of cryptocurrency they hold.
Proof of work involves miners solving complex mathematical puzzles to validate transactions
Proof of stake selects validators based on the amount of cryptocurrency they hold
Proof of work is energy-intensive and requires significant computati...
- Q5. Canwe inharit class in solidity?
- Ans.
Yes, inheritance is possible in Solidity.
Solidity supports inheritance, allowing one contract to inherit properties and methods from another.
Inheritance is achieved using the 'is' keyword followed by the name of the base contract.
Child contracts can access the functions and variables of the parent contract.
Multiple inheritance is also supported in Solidity.
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
I was interviewed in Jan 2025.
Programming questions related to Python and React.
Programmatical problem related to Python and React
(1 Question)
- Q1. Salary Discussion
Programming Problems related to react and python.
(1 Question)
- Q1. Object Oriented Programming, Memory Management, Multiprocessing, multithreading, GIL, React Components
(1 Question)
- Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
(1 Question)
- Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
(1 Question)
- Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
(1 Question)
- Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy, Django ORM, Class Inheritance
Interview Preparation Tips
I applied via Naukri.com
(2 Questions)
- Q1. Write a java program to sort an array
- Ans.
Java program to sort an array of strings
Use Arrays.sort() method to sort the array of strings
Import java.util.Arrays package
Example: String[] arr = {"apple", "banana", "orange"}; Arrays.sort(arr);
- Q2. Collections in java and springboot
- Ans.
Collections in Java and Spring Boot are used to store and manipulate groups of objects.
Collections in Java are used to store multiple objects in a single unit.
Spring Boot provides support for managing collections through various data structures like List, Set, Map, etc.
Collections in Java and Spring Boot help in organizing and manipulating data efficiently.
Example: List
names = new ArrayList<>();
Skills evaluated in this interview
Basic aptitude questions. Could be done easily if practiced enough
(2 Questions)
- Q1. Introduce yourself
- Q2. Array searching
(2 Questions)
- Q1. Java questions , stream api
- Q2. Whatever you have mention in resume
Interview Preparation Tips
Yash Gupta
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
(2 Questions)
- Q1. When have you had a conflict with someone.
- Ans.
I had a conflict with a team member over project priorities.
Miscommunication led to conflicting priorities
Discussed the issue openly and found a compromise
Learned the importance of clear communication in team projects
- Q2. Tell me you greatest project
- Ans.
Developed a web-based project management tool for tracking tasks and deadlines
Used React for front-end development
Implemented user authentication and authorization using JWT tokens
Utilized Node.js and Express for back-end development
Integrated MongoDB for database storage
I was interviewed in Sep 2023.
(1 Question)
- Q1. Basic intro with work experience and skillset
(4 Questions)
- Q1. After a quick intro jumped into coding - it was an easy DSA question which unfortunately i wasn't able to solve in best time complexity. - find 2nd max element in an array (this was in JS language) you ca...
- Q2. Alot of questions on vanilla JS
- Q3. Asked if i know mongoDB as its a full stack dev role - which i didnt knew so i said not prepared as of now
- Q4. Asked React questions - higher order component, hooks, useeffect, prepare lifecycle methods thouroughly
Interview Preparation Tips
- React.Js
- Javascript
Rahul Yamsani 010
Challenging questions in mathematics.
A constructive discussion about the significance of various topics and additional aspects.
Software Developer Interview Questions & Answers
Willis Towers Watson
Anonymous
posted on 8 Mar 2024
I applied via Campus Placement
(1 Question)
- Q1. Questions based on Java , C++ , OOPs, cloud computing, one coding question, regarding previous projects, some behavioural questions.
Dot
(1 Question)
- Q1. Explain your backgroun
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PwC Blockchain Developer Interview Process
based on 1 interview
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