● A hands-on LLD course for the AI Era

Machine Coding
Mastery

Go from solving toy problems to designing real, production-grade low-level systems — the way senior engineers actually build, using AI as your co-pilot.

Enroll Now →▷ Watch Trailer
First 10:SOLID50→ ₹3,000Paste at checkout • First 10 only
10
sections
40+
lessons
3 years
access
🤖 Free AI
assisted coding
Course instructor
by solidcoder
See it in action

Watch the Trailer

A 2-minute peek at how we go from a blank editor to a clean, interview-ready design.

Sneak Peek

Crash Course Preview

A quick look inside the 3-hour Machine Coding Mastery Crash Course — the same image you see, now in motion.

Why this course

Built for the AI Era

LLMs can write code. They can't yet reason about design. That's the skill that makes you senior.

◆

What is this course?

A structured path from brute-force problem solving to clean, extensible low-level design — with reusable patterns you'll actually use on the job.

✦

What will I learn?

Design patterns, trade-off reasoning, and UML — plus deep, hands-on concurrency and threading, and how to leverage AI-assisted coding and autonomous agents to ace the machine-coding interview without shipping fragile code.

⚡

Never burn out

Bite-sized modules, runnable examples, and a clear roadmap so you always know the next right thing to practice.

Learning experience

Built to actually stick

Designed so the concepts stay with you long after the interview.

🎬

AI-Powered Animations to make complex concepts easier to understand

🎙️

World-Class Voiceovers for a smooth, engaging learning experience

Course curriculum

What's inside

Forty-plus focused modules, each ending in a build you can show.

01
Introduction
Course overview, setup, and how to get the most out of it.
02
OOPS Fundamentals
Classes, objects, inheritance, polymorphism, abstraction, encapsulation.
03
SOLID Principles
SRP, OCP, LSP, ISP, DIP with practical examples.
04
UML Class Diagrams
Reading & drawing classes, relationships, and multiplicity.
05
Design Patterns
Reusable solutions to common design problems, and when to reach for them.
06
Concurrency & Parallelism
Threads, tasks, parallel vs concurrent, and when to use each.
07
InMemory Locks
Mutexes, semaphores, reentrancy, and deadlock avoidance.
08
SpringBoot Basics
Controllers, services, DI, and config — wiring a real backend.
09
AI agents for machine coding round
Using AI agents to plan, scaffold, and review machine-coding round solutions.
10
Practice Questions
Interview-style problems with walkthroughs and trade-offs.
Student stories

Loved by 400+ on YouTube

From first-job juniors to staff engineers brushing up for interviews.

👏 👍 😊

I recently came across your YouTube playlist on machine coding, and I must say — it's incredibly informative and well-structured.

K
Kajal Srivastava
Software Engineer, Microsoft
★★★★★

I was actually looking for content on the Machine Coding round as I have an interview approaching for the same. I searched 'Machine Coding Round' on YT and your videos 'Machine Coding Round for Backend Engineers' and 'Machine Coding Round: Top 7 Mistakes' ranked number 7 and 10 on my results. After the 'Top Mistakes' video, I found it very insightful and went through more of the playlist.

A
Aranya Singh Chauhan
Data Engineer, Onextel
★★★★★

Thank you sir for your efforts. I don't know about others, but it is helping me a lot. Now I understand the actual flow for the machine coding round.

Y
Yug
YouTube subscriber

Launch price ends this month

₹3,000 with SOLID50 instead of ₹30,000 — 3 years access.

First 10:SOLID50→ ₹3,000

First 10 only • Paste code at TagMango checkout

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FAQ

Questions, answered

Who is this course for?⌄

This course is for developers preparing for Machine Coding rounds and anyone who wants to improve their practical software design and coding skills.

Do I need prior Machine Coding experience?⌄

No. We start from the fundamentals and gradually move towards real-world Machine Coding problems.

What will I learn in this course?⌄

You'll learn OOP, SOLID principles, UML, Design Patterns, Concurrency, Multithreading, In-Memory Locking, and how to build clean and extensible solutions.

Is this course theory or hands-on?⌄

It's highly practical. You'll apply the concepts by designing and implementing real-world Machine Coding problems.

Will we solve real Machine Coding problems?⌄

Yes. The course includes multiple real-world problems designed to help you develop a structured approach to Machine Coding rounds.

Which programming language is used?⌄

The implementations are primarily done in Java, with a strong focus on object-oriented design and clean code.

Can I take this course if I use Go, Python, or another programming language?⌄

Absolutely! The core concepts of Machine Coding are language-independent. The course uses Java for implementation, but the principles you learn — OOP, SOLID, design patterns, concurrency, clean code, and extensible design — can be applied to Go, Python, C++, or other programming languages.

Will the course cover AI-assisted coding?⌄

Yes. You'll learn how to use AI as a coding partner for understanding requirements, exploring designs, writing code, debugging, refactoring, and reviewing your implementation.

Will I need to pay for AI tools?⌄

No. The course demonstrates free AI tools and free-tier options so you can practice AI-assisted coding without needing an expensive subscription.

How long will I have access to the course?⌄

You get 3 years of access from the date of enrollment — enough time to revisit lessons, practice problems, and stay sharp for interviews.