I Tried 50+ Tech Interview Resources: Here Are My Top 10 Recommendations
Coding interview is getting tougher and with more competition, you need a solid strategy and good resources to crack it.
Hello friends, the situation for programmers and developers is not getting better, while companies are not hiring at the rate they used to hire and there are a lot more people looking for the job, its probaby time to brush up on your interview skills.
The tech interview is also not just getting tougher and tougher the landscape is also evolving rapidly, with new formats and expectations shaping the way candidates prepare.
While data structures and algorithms remain fundamental, modern interviews increasingly emphasize system design, AI-driven system design, and real-world problem-solving.
Companies like Google, Amazon, Microsoft, and Meta now focus more on scalability, distributed systems, and AI-powered applications.
That’s why its become really important to prepare well and focus on key areas like DSA and System Design. At the same time, it also becomes important to choose the right resource for your preparation.
In this article, I will share with you best interactive coding interview courses which not only cover Data structures and Algorithms but also System Design, Dynamic Programming, Object Oriented Programming, Coding Patterns as well as behavioral interview questions.
These are also my favorite courses from Educative.io , an interactive coding and learning platform that is famous for their awesome Grokking courses for coding interviews.
Why I like Educative.io?
Well I first came across this website few years back when I was looking for a System design interview course, that time, their Grokking the System Design course was the only reliable course available on internet.
After joining that course, I become addicted to their platform which have also come a long way now by using AI to help you prepare better. They now have AI Mock interviews as well as more advanced coding platform where you can practice question on browser.
This article explores 10 essential resources on Educative.io that will help you crack tech interviews in 2026.
Btw, you would need an Educative subscription to join these courses, which not only provide access to this course but more than 1000+ courses to learn essential tech skills, prepare for coding interview and improve yourself as a Developer. If you want to invest yourself and upgrade your tech skill, this is one subscription you definitely need. They are also offering 50% discount now.
10 Best Courses for Tech and Programming Job Interviews in 2026
Without any further ado, let’s jump into these text-based, interactive courses to prepare well for coding interviews in 2026. These covers all important topics including DSA, System Design, Behavioral interviews and much more.
1. Grokking the Coding Interview Patterns in Java — Mastering DSA for Interviews
One of the biggest changes in coding interview preparation is the emphasis on problem-solving patterns rather than memorization.
Not just you and me but every programmer I met now knows about coding interview patterns, which means not knowing these patterns puts you into a disadvantage position.
The traditional approach of solving hundreds of problems is being replaced by pattern-based learning, which helps candidates solve unseen problems using established techniques.
Why is this course important?
Focuses on problem-solving patterns, not rote learning.
Covers Blind 75 problems, the most frequently asked interview questions.
Interactive coding environment with hands-on exercises.
Step-by-step breakdown of each solution, making complex problems easier to understand.
Here is the link to join this course — Grokking the Coding Interview Patterns in Java
2. Grokking the System Design Interview — Mastering Large-Scale Systems
System design interviews are now a key part of technical hiring, even for mid-level engineers. Companies want candidates who understand scalability, distributed computing, and high-performance systems.
What this Course Covers:
Real-world system design problems, including designing YouTube, WhatsApp, and Facebook.
Step-by-step approach to designing scalable, fault-tolerant, and highly available systems.
Trade-offs and bottleneck analysis, helping you make informed design choices.
Hands-on exercises and mock interview questions.
Here is the link to join this course — Grokking the System Design Interview
3. Grokking AI for Engineering & Product Managers
AI and generative AI (Gen AI) are now integral to modern software systems. Interviews at leading tech companies now include Gen AI system design questions, requiring candidates to understand LLMs, vector databases, and retrieval-augmented generation (RAG).
What Makes This Course Special?
Teaches how to design AI-powered applications, including chatbots and recommendation engines.
Covers core concepts like embeddings, transformers, and fine-tuning LLMs.
Explains AI model deployment and scaling challenges.
Prepares candidates for AI-focused system design interviews at top tech firms.
Here is the link to join this course — Grokking AI for Engineering & Product Managers
4. Deep Dive into System Design Interview
System design interviews are no longer about textbook solutions — interviewers now expect deep, practical knowledge of how systems scale in the real world.
The Deep Dive into System Design Interview on Educative.io is an essential resource for engineers preparing for these interviews.
Why This Course is a Game-Changer
Comprehensive coverage of system design fundamentals, from caching to load balancing.
Explains real-world trade-offs and performance optimizations.
Great for both beginners and experienced engineers looking to refine their design skills.
Perfect companion to mock interviews and system design discussions.
Overall, a complete guide for Interview Prep for Software Engineers and Developers in 2026.
Here is the link to join this course — Deep Dive into System Design Interview
5. Grokking Dynamic Programming Interviews
Dynamic programming (DP) remains one of the most difficult topics in coding interviews. Many top companies frequently test DP concepts because they assess a candidate’s logical thinking and problem-solving abilities.
Why You Should Take This Course
Breaks down DP problems into easy-to-understand patterns.
Teaches bottom-up and top-down approaches.
Helps solve Blind 75 DP problems with confidence.
Includes real-world applications of DP beyond interview questions.
In short, one of the better courses for mastering DP for coding interviews in 2026 and beyond.
Here is the link to join this course — Grokking Dynamic Programming Interviews
6. Mock Interviews on Educative
One of the biggest trends in tech interviews is the shift towards real-world problem-solving and live coding assessments. Practicing with mock interviews is now a must to succeed.
How Educative’s Mock Interviews Help You Prepare
Simulate real interview conditions, including time pressure and problem difficulty.
Get instant feedback on your solutions.
Includes behavioral interview questions, an increasingly important part of hiring.
Great for building confidence and reducing interview anxiety.
You can use this course to Simulate Real Interview Scenarios
Here is the link to join this course — Mock Interviews on Educative
7. Grokking Advanced System Design Interview
For mid-to-senior level engineers, system design interviews have become more complex, with companies expecting deeper knowledge of distributed systems, databases, and scalability.
What This Course Offers
Advanced topics like event-driven architectures and microservices.
Deep dives into caching strategies, sharding, and load balancing.
Covers real-world scalability issues seen in production environments.
Great for senior developers preparing for tech lead roles.
In short, one of the best resources to prepare for Senior Engineer Interviews in 2026.
Here is the link to join this course — Grokking Advanced System Design Interview
8. Grokking the Low-Level Design Interview Using OOD Principles
Object-oriented design (OOD) is an underrated but critical part of technical interviews, especially for backend and software engineering roles. Many candidates struggle with OOD principles, making this course a valuable resource.
Why is this course important?
Teaches SOLID principles and best practices in OOP.
Explains how to design maintainable and scalable software.
Includes hands-on exercises for designing real-world applications.
**Great for candidates applying to backend-heavy roles at companies like Amazon and Google.
In short, a good course to master OOP concepts for Tech interviews in 2026.
Here is the link to join this course — Grokking the Low-Level Design Interview Using OOD Principles
9. Grokking the Machine Learning Interview
As AI and data engineering become mainstream, data science interviews are becoming more structured. Companies now expect candidates to not only code but also understand data models and ML workflows.
What This Course Covers
Essential SQL, Python, and data structures for data roles.
Covers probability, statistics, and ML concepts.
Includes hands-on projects for real-world experience.
Great for data engineers, AI researchers, and ML engineers.
Overall, a nice course to prepare for Data & AI Roles in FAANG/MAANG companies in 2026.
Here is the link to join this course — Grokking the Machine Learning Interview
10. Grokking the Behavioral Interview
Technical skills alone aren’t enough — companies now focus on behavioral interviews to assess communication, problem-solving approach, and teamwork.
Why This Guide is Essential?
Covers STAR (Situation, Task, Action, Result) methodology.
Includes real interview questions from FAANG companies.
Teaches how to frame answers clearly and confidently.
Helps candidates avoid common pitfalls in behavioral interviews.
Overall, a great resource for mastering the Non-Technical Round of Tech interviews.
Here is the link to join this course — Grokking the Behavioral Interview
Final Thoughts
That’s all about the 10 best online courses for Tech interviews in 2026. As I said, the best way to prepare for tech interviews is by combining coding practice, system design mastery, AI system design, and mock interviews.
Educative.io offers all-in-one resources to help candidates stay ahead of the latest interview trends. Start preparing today!
By the way, you would need an Educative subscription to join this course, which costs around $14.99 but also provides access to more than 1200+ courses, projects, and cloud labs to learn in-demand tech skills, including web development. You can also use 7 days free trial to get this course for FREE.
They are also offering 50% discount now
Which course will you take first? Let us know in the comments!
All the best for your learning journey in 2026. If you have any doubts or questions, feel free to ask in the comments.
P. S. — While Educative also has a Premium plan, I suggest you get this one as it provides cloud lab access, which is really important for learning cloud computing concepts.
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