Master your technical interview
Practice real interview questions or follow a structured learning path — pick how you want to prepare today.
Most-asked questions
The ones interviewers reach for first — straight from the top of every stack.
String vs StringBuilder vs StringBuffer in Java
Explain JVM architecture.
What is SQL?
What is Spring Boot?
Difference between JDK, JRE, and JVM.
Types of SQL Commands
Why Spring Boot over Spring Framework?
Explain the Class Loading Mechanism.
Java
Core Java, OOP, collections, concurrency and JVM internals — the staples of every Java interview.
Python
Python fundamentals, idiomatic code, data structures and real-world coding questions.
JavaScript
Closures, prototypes, async/await, the event loop and everything JS interviews love to ask.
TypeScript
Types, generics, narrowing and patterns for building large-scale TypeScript codebases.
React
Hooks, rendering behavior, state management and component design questions.
Spring Boot
REST APIs, dependency injection, JPA, security and Spring Boot production practices.
SQL
Joins, indexing, query optimization and schema design — asked in every backend interview.
Data Structures & Algorithms
Arrays to graphs and dynamic programming — language-agnostic problem solving for coding rounds.
System Design
Scalability, caching, queues, databases and the art of designing large systems.
Microservices
Service decomposition, communication patterns, resilience and observability.
HTML & CSS
Semantic markup, flexbox, grid, responsive layouts and accessibility essentials.
Go
Goroutines, channels, interfaces and Go's philosophy of simplicity at scale.