Interview Preparation
Ace Your Next Interview
Practice with 250+ interview questions, mock interviews, and expert guides
250+
Interview Questions
50+
Mock Interviews
15+
Study Guides
10K+
Students Helped
Mock Interviews
⛓️
Blockchain Developer - Technical Round
45 min15 questions
Medium
Smart Contracts
Solidity
Web3
💻
Full Stack Developer - Coding Interview
60 min20 questions
Hard
Algorithms
Data Structures
System Design
👥
Behavioral Interview Practice
30 min10 questions
Easy
Leadership
Teamwork
Problem Solving
Study Guides
Complete Blockchain Interview Guide
4.9
Everything you need to ace blockchain interviews
12 topics
150 questions
8 hours
2500 students
All Levels
System Design Masterclass
4.8
Learn to design scalable distributed systems
8 topics
50 questions
6 hours
1800 students
Advanced
Coding Interview Bootcamp
4.9
Master algorithms and data structures
15 topics
200 questions
12 hours
3200 students
Intermediate
Interview Questions
Medium
blockchain
Very High Frequency
Explain how a blockchain achieves consensus and what are the different consensus mechanisms?
Asked by: Coinbase, Binance, ConsenSys
Hard
blockchain
High Frequency
How would you prevent reentrancy attacks in smart contracts?
Asked by: OpenZeppelin, Chainlink, Uniswap
Medium
algorithms
Very High Frequency
Implement a function to reverse a linked list
Asked by: Google, Amazon, Microsoft
Hard
system-design
Medium Frequency
Design a decentralized job marketplace like A3Hero
Asked by: A3Hero, Gitcoin, Braintrust
Easy
behavioral
Very High Frequency
Tell me about a time when you had to work with a difficult team member
Asked by: All Companies