Crack machine coding rounds at Google, Meta, Amazon with our curated collection of real interview problems.
Real interview questions from top tech companies
Production-ready solutions in Java & Python
Detailed class diagrams and design patterns
Everything you need to excel
Comprehensive preparation material designed to help you crack the machine coding round.
Ditch passive reading. Engage in realistic, chat-based interview simulations that mimic the pressure and flow of a real interview.
Stuck? Get context-aware hints to uncover edge cases. Our system analyzes your inputs for key concepts and provides instant feedback.
Unlock complexity step-by-step. Master Functional requirements before unlocking Non-Functional constraints and Schema design.
Practice with actual machine coding problems asked in top tech companies like Uber, Swiggy, and Flipkart.
Learn to write clean, modular, and extensible code that follows SOLID principles and Design Patterns.
Understand how to structure your code for better readability and maintainability, just like in a real job.
Master the art of writing efficient code that scales with user demand and handles concurrency gracefully.
Learn to apply common design patterns (Factory, Observer, Strategy) to solve complex architectural problems.
Follow industry standards for error handling, logging, and naming conventions to write professional code.
Let's be real—basic LeetCode style questions are becoming obsolete. With AI assistants that can solve algorithmic problems in seconds, top tech companies are shifting their focus.
The new standard? Machine Coding & LLD rounds where you're asked to extend an existing codebase or design a complex system from scratch. They want to see if you can architect, not just type.
"Anyone can prompt an AI to write a function. But can an AI explain why you chose the Strategy Pattern over the State Pattern for your payment gateway? Not yet."
Interviews now often involve adding features to a 2000+ line codebase. Without knowing Design Patterns, you'll be lost in the spaghetti.
You might be allowed to use AI, but the problem will be open-ended. The challenge isn't syntax anymore; it's structure, scalability, and trade-offs.
Our problems are designed for this new reality. We don't just give you the answer; we teach you how to think like a Senior Engineer.
Get unlimited access to every problem with class diagrams, interview tips, and production code.
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Everything you need to know about LLD and Machine Coding
Low Level Design (LLD), also known as Object-Oriented Design (OOD), focuses on the component-level details of a system. It involves designing class diagrams, defining interfaces, and ensuring code modularity and extensibility using Design Patterns and SOLID principles.
High Level Design (HLD) deals with architecture, scalability, and distributed systems (e.g., Load Balancers, Databases). LLD deals with the actual code structure, class interactions, and maintainability within a single service or component.
Companies like Google, Uber, and Swiggy use Machine Coding rounds to test your ability to write clean, working code under time constraints. They want to see if you can translate requirements into a working application while following best practices.
All our solutions are provided in Java, as it is the industry standard for teaching Object-Oriented Design. However, the concepts and patterns are applicable to any object-oriented language like C++, Python, or C#.
Yes! We start with the basics of SOLID principles and Design Patterns before moving to complex problems. Each problem comes with a detailed breakdown, making it easy to learn step-by-step.