I Tried 50+ Coding Interview Courses on Udemy: Here Are My Best 6 for 2026

My favorite Udemy Courses to prepare for coding interviews in 2026

I Tried 50+ Coding Interview Courses on Udemy: Here Are My Best 6

Hello friends, I’ve spent more time than I care to admit on coding interview prep content.

Not because I needed to — because I wanted to find what actually works. Over the years I’ve gone through bootcamp-style courses, language-specific DSA deep dives, LeetCode walkthroughs, algorithm masterclasses, and everything in between. Most were decent.

A handful were genuinely excellent.

A few were a complete waste of money.

What follows are the six I’d put my name behind — reordered by how useful they are depending on where you are in your career, and written plainly so you can pick the right one without second-guessing.

But first — why now is a good time to be doing this.

Why the Second Half of the Year Is the Best Time to Prep?

Bonus season is over at most companies. Hiring picks back up. And if you join a new role in Q3 or Q4, you don’t miss out on the bonus cycle at your new company either.

The engineers who land offers in this window are the ones who started preparing before everyone else did. That’s the only edge here — consistency and starting early.

Whether you’re a beginner who’s never cracked open a DSA textbook, or an experienced developer who hasn’t practiced algorithms in years, these courses will get you sharp.

They’re not generic “learn Java” tutorials.

They’re specifically designed for interview conditions: timed, structured, pattern-focused, and built around the questions that actually show up at FAANG, investment banks, and product companies.

All six are from Udemy because Udemy is simply the most affordable place to get high-quality instruction. You can often get all of these for around $10–15 each during a sale.

If you’re planning to take more than one — which I’d recommend — it’s worth considering a Udemy Personal Plan at around $30/month for access to 15,000+ courses.

The 6 Best Coding Interview Courses on Udemy in 2026

Here are the 6 best coding interivew courses you can join on Udemy to master all key topics like DSA and System Design. These are created by expert creators, ex FAANG engineers and people who have gone through and succeeded on FAANG Interviews.

1. Master the Coding Interview: Data Structures + Algorithms — Best Overall By Andrei Neagoie — Zero to Mastery Academy

If I had to send every software engineer to a single course before their next interview, this is the one.

Andrei Neagoie’s 19.5-hour bootcamp-style course is the most complete, well-structured coding interview prep resource I’ve found on Udemy. It covers every essential data structure — arrays, linked lists, binary trees, graphs, stacks, queues, hash tables — and ties them to the actual algorithms and problem patterns that show up repeatedly in FAANG interviews.

What separates this course from a generic DSA tutorial is its dual focus: you learn the concepts and you learn how to communicate and perform under interview conditions. That includes Big O notation, salary negotiation (this part alone can get you 20–30% more than your initial offer — I know from experience), and real questions from Google, Microsoft, Amazon, and Meta.

What you’ll get:

  • Comprehensive DSA coverage with interview-pattern focus
  • Big O analysis for every major solution and algorithm
  • Common FAANG interview questions with explained approaches
  • In-browser coding exercises — no IDE setup friction
  • Salary negotiation tactics most courses skip entirely

The social proof holds up: 221,000+ students, 4.7 rating. That’s not inflated — the quality is there.

If you’re targeting FAANG specifically, also check out his companion course: Master the Coding Interview: Big Tech (FAANG) Interviews — it goes deeper on the MAANG-specific interview process.

👉 Enroll in Master the Coding Interview: Data Structures + Algorithms

2. JavaScript Algorithms and Data Structures Masterclass — Best for Beginners By Colt Steele

If you’re early in your career — or returning to this material after years away from core CS — start here before anything else on this list.

Colt Steele is one of the most gifted teachers on Udemy, full stop. His 21.5-hour course bridges exactly the gap between what universities teach and what technical interviews actually test.

The explanations are patient without being patronizing, and the progression from basic problem-solving to implementing 10+ data structures from scratch is genuinely well-designed.

You’ll cover 6 sorting algorithms, all the classic data structures (arrays, linked lists, trees, stacks, queues, graphs), and the problem-solving patterns that experienced interviewers expect you to recognize on sight.

JavaScript is the language of instruction, making it ideal for web developers and frontend engineers.

What you’ll get:

  • Beginner-friendly DSA foundations built for interview conditions
  • 6 sorting algorithms explained and implemented from scratch
  • 10+ data structures built from the ground up
  • Problem-solving patterns that apply across hundreds of LeetCode-style problems
  • Clean, visual explanations that actually stick

Experienced developers with 2–3 years under their belt will also find this useful as a reset — especially if algorithms haven’t been part of your day-to-day work.

👉 Enroll in JavaScript Algorithms and Data Structures Masterclass

3. Java Data Structures & Algorithms + LEETCODE Exercises — Best for Java Developers By Scott Barrett

You’ve been writing Java for years. You know the language inside out. But you haven’t touched linked lists or binary search trees since university, and the thought of live coding in an interview is making you nervous.

This course exists for exactly that situation.

Scott Barrett built it specifically for experienced Java developers who need to sharpen their DSA skills and practice applying them to real LeetCode-style problems in Java.

The 100+ coding exercises with detailed explanations are the core of the course — not lectures you watch passively, but problems you solve.

The visual animations Scott uses to explain data structures work especially well for bridging the gap between abstract concepts and concrete implementation.

What you’ll get:

  • 100+ coding exercises with full explanations — solved in Java
  • Big O analysis for time and space complexity
  • Animated breakdowns of complex DSA concepts
  • LeetCode-style problems that mirror real interview questions

44,759 students, 4.7 rating. The quality is consistent.

👉 Enroll in Java Data Structures & Algorithms + LEETCODE Exercises

4. The Coding Interview Bootcamp: Algorithms + Data Structures — Best for Web Developers By Stephen Grider

Stephen Grider is one of my favourite instructors on Udemy — clear, structured, never wastes your time. This 13-hour course reflects that: it’s a focused, problem-driven crash course built for experienced web developers who already know JavaScript and want to get interview-ready fast.

The emphasis here is on solving problems, not on introducing concepts from first principles. That makes it less suitable for complete beginners, but exactly right for working developers who need to sharpen their interview performance rather than learn DSA from scratch.

You’ll work through dozens of coding challenges across 30+ exercises, all in JavaScript, covering the data structures most commonly tested in web developer interviews.

What you’ll get:

  • Problem-focused structure built for experienced developers, not beginners
  • 30+ JavaScript coding exercises covering core data structures
  • Practical patterns for solving common interview questions efficiently
  • Crash course format — maximum value for a limited time investment

102,191 students, 4.7 rating. That consistency at scale is genuinely hard to fake.

👉 Enroll in The Coding Interview Bootcamp: Algorithms + Data Structures

5. LEETCODE In Python: Algorithms Coding Interview Questions — Best for Python Developers By Bit Punch (ex-Google Engineer)

Python is now one of the top three interview languages — and for good reason. It’s concise, readable under pressure, and well-suited to solving algorithmic problems quickly. If Python is your language of choice, this is the course to use for interview prep.

Built by an ex-Google engineer with real knowledge of what FAANG interviewers look for, this 29-hour course takes you from easy problems all the way to hard-difficulty LeetCode challenges — all solved in Python.

The standout feature is the explicit focus on interview patterns: two pointers, sliding window, merge interval, and others that unlock solutions to entire categories of problems rather than just the individual question you happened to practice.

What you’ll get:

  • 29 hours of Python-specific interview preparation
  • Easy-to-hard difficulty progression mirroring real interview conditions
  • Essential coding patterns — two pointers, sliding window, merge interval, and more
  • Questions from Google, Meta, Apple, and Amazon broken down with full solutions

18,436 students, 4.6 rating. Strong for a newer course still building its audience.

👉 Enroll in LEETCODE In Python: Algorithms Coding Interview Questions

6. Data Structures Algorithm DSA | Python + JavaScript LEETCODE — Best for Deep Practice By Jackson Kalith

If the other courses on this list feel too short, this is the one for you.

39 hours of content, structured as a 25-day coding interview bootcamp. It covers all the major data structures — arrays, hash tables, linked lists, binary trees, graphs — alongside real interview questions from Google, Meta, Amazon, Netflix, and Microsoft.

Both Python and JavaScript are supported, making it one of the few courses that genuinely serves developers working in either language.

What makes this course stand out from the others is its raw depth. If you want to solve a large volume of problems, practice across two languages, and come out of preparation with a broad range of patterns internalized, 39 hours of structured content is a serious advantage.

The 25-day structure also gives you a concrete timeline — a full sprint from zero to interview-ready.

What you’ll get:

  • 39 hours of DSA and interview prep across Python and JavaScript
  • Real interview questions from Google, Meta, Amazon, Netflix, and Microsoft
  • Big O analysis, coding patterns, and problem-solving frameworks
  • Structured 25-day plan to take you from foundations to interview confidence

58,484 students enrolled, 4.5 rating — strong signal for a course at this length.

👉 Enroll in Data Structures Algorithm DSA | Python + JavaScript LEETCODE

Final Thoughts

That’s all about the 6 best Udemy courses for Coding interviews in 2026. Coding interviews don’t reward the engineer who knows the most. They reward the engineer who has practiced enough that the patterns are instinct — who can recognize a sliding window problem in the first 30 seconds and start building the solution calmly, even under pressure.

That kind of readiness only comes from doing the problems. A lot of them. In a structured way.

Start with Master the Coding Interview if you’re not sure where to start. Add the language-specific course for your stack. Begin practice tests earlier than feels comfortable.

Other DSA and coding interview resources worth your time:

Thanks for reading this article so far. If you like these best Udemy courses for coding interviews, then please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note.

P. S. — If you need an alternative to Udemy coding interview courses then you can also join ByteByteGo and start learning System Design and Coding Interview concepts, you will thank me later.

System Design · Coding · Behavioral · Machine Learning Interviews

I Tried 50+ Coding Interview Courses on Udemy: Here Are My Best 6 for 2026 was originally published in Javarevisited on Medium, where people are continuing the conversation by highlighting and responding to this story.

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