DSA & System Design Interview Prep Sheets ~ Devbrainiac
A complete, structured and beginner-to-advanced roadmap for cracking top tech interviews.
Preparing for coding interviews can feel overwhelming, there are too many resources, topics are scattered everywhere and it's hard to know where to start. Devbrainiac solves this by bringing everything together in one place, with well-organized DSA and System Design preparation sheets trusted by students, developers and working professionals.
Devbrainiac brings together the most popular interview prep sheets - including Striver's DSA Sheet, A2Z DSA Sheet and comprehensive System Design resources - all organized in a structured, beginner-to-advanced format.
From mastering fundamental topics like arrays, strings, Linked List, stack, queue, trees, matrix and graphs to tackling advanced concepts such as dynamic programming and object-oriented design, you will find everything you need to build a solid foundation and confidently solve complex coding problems.
For experienced candidates, our System Design section dives deep into both Low-Level Design (LLD) and High-Level Design (HLD), featuring real-world system design challenges. These include scalable architectures, messaging systems and other practical problems frequently asked in interviews at top tech companies like Amazon, Google and Meta.
Whether you're preparing for FAANG, product-based companies or high-growth startups, Devbrainiac's structured prep sheets help you learn faster, practice smarter and track your progress effectively.
Explore Devbrainiac Interview Preparation Sheets
DSA Interview Preparation Sheets
System Design Interview Preparation Sheets
Why Choose Devbrainiac Interview Prep Sheets?
1. Expert-Curated Content
Each sheet is crafted by industry professionals and experienced developers who understand real interview expectations. You focus only on high-impact, interview-relevant concepts, saving hours of effort and accelerating your preparation.
2. Designed for Beginners to Advanced Engineers
Whether you're starting your DSA or System Design journey or preparing for FAANG-level deep-dive rounds, Devbrainiac sheets guide you step-by-step from fundamentals to advanced problem-solving and architectural design.
3. Structured Like a Roadmap
No more confusion about what to study next. Our sheets are organized in a progressive sequence from basic arrays and recursion to dynamic programming, LLD and scalable system design patterns.
4. FAANG-Focused Practice Questions
Questions in each sheet are selected based on recurring interview patterns from Google, Meta, Amazon and other top tech companies. You practice the exact problem types used in real interviews.
5. Covers DSA, LLD & HLD in One Place
Devbrainiac is not limited to DSA. You also get full coverage of Low-Level Design, High-Level System Design, architecture patterns and design principles ~ making it a complete interview preparation solution.
6. Updated Regularly
Our team frequently updates sheets and add new sheets to reflect new interview trends, emerging design patterns and high-frequency coding problems used in the latest hiring cycles.
How Devbrainiac Helps You Prepare Better
Structured Learning Path
You learn concepts in the right order building strong fundamentals before moving into intermediate and advanced problem sets.
High-Frequency Interview Problems
Sheets include the most commonly asked questions patterns across product companies, helping you prepare smarter instead of practicing random problems.
Build Real Interview Confidence
By practicing structured sheets, you naturally understand patterns, identify edge cases faster and articulate solutions clearly during interviews.
Covers Both Coding & System Design
You prepare for all interview rounds from coding assessments to LLD and scalable system design discussions ensuring complete readiness.
Saves 100+ Hours of Searching
Everything is organized for you. No need to browse YouTube, blogs or random lists. Just pick a sheet and follow the roadmap.
Who Should Use These Sheets?
Students Preparing for Placements
Perfect for engineering students preparing for campus placements and product-company roles.
Working Professionals
Ideal for developers switching to product companies or aiming for higher-paying roles.
FAANG Preparation Aspirants
Sheets are specifically aligned with FAANG-level question patterns and expected problem-solving depth.
Senior Engineers Preparing for System Design
Perfect for engineers preparing for LLD & HLD interviews with real-world system design case studies and patterns.
Self-Learners Improving Core Skills
Anyone wanting to strengthen DSA, object-oriented modeling and design patterns will benefit greatly from structured sheets.
Start Your Interview Preparation with Devbrainiac
Devbrainiac gives you everything you need for placement preparation, job-switch preparation and FAANG-level interview success. Choose a sheet, follow the structured roadmap, practice consistently and build the confidence to crack top tech interviews.
Whether you are preparing for coding rounds, LLD interviews or large-scale system design evaluations, Devbrainiac ensures you stay organized, confident and ahead of the competition.
Your interview success journey starts here.
Frequently Asked Questions (FAQ)
1. Are Devbrainiac interview sheets suitable for beginners?
Yes. The sheets are structured from basic to advanced levels, making them ideal for complete beginners as well as experienced developers. You can start with fundamentals like arrays and strings, then gradually move to advanced topics such as dynamic programming and system design.
2. How should I use these sheets for maximum effectiveness?
Start by choosing one sheet based on your current level, follow the sequence topic-wise and track your daily progress. Focus on understanding patterns instead of memorizing solutions. Consistent practice for 1-2 hours a day delivers the best results.
3. Do these sheets cover FAANG-level interview questions?
Absolutely. The sheets include high-frequency coding and system design problems patterns commonly asked in companies like Google, Meta, Amazon and Microsoft. They are curated based on real-world interview experiences.
4. Are system design sheets beginner-friendly?
Yes. The system design section starts with basic concepts and design patterns, then progresses into Low-Level Design (LLD) and large-scale architecture (HLD). This step-by-step approach makes complex topics easier to understand.
5. How long does it take to complete the interview sheets?
The time required depends on your learning speed, consistency and daily practice.
6. Are these sheets regularly updated?
Yes. We frequently update questions, explanations and system design patterns to match the latest interview trends and hiring expectations across product-based companies.
7. What makes Devbrainiac sheets different from random problem lists?
Each sheet is curated, structured and progression-based. Instead of random problems, you follow a roadmap that builds your skills gradually, covers must-know interview concepts and prepares you for real-world coding and design challenges.
8. Can these sheets help with job switching?
Definitely. Many working professionals use Devbrainiac sheets to prepare for job transitions and interview processes at high-growth startups and multinational tech companies.
9. Can Devbrainiac sheets help with off-campus and referral interviews?
Absolutely. These sheets are ideal for both on-campus and off-campus interview preparation. Since questions are curated from major product companies, they strongly boost your chances in referral interviews, coding assessments and system design rounds.
10. Do I need to complete all questions in a sheet to see improvement?
Not necessarily. Even completing 60-70% of the questions in a structured sequence will significantly improve your problem-solving skills. However, for FAANG-level and top tech company interviews, completing the full sheet is recommended.
11. Can these sheets help me improve my problem-solving speed?
Yes. Repeated exposure to patterns, timed practice and solving a diverse range of problems naturally improves your speed. Many users report noticeable improvements within 3-4 weeks of consistent practice.
12. Are coding languages like Java, Python and C++ covered in the sheets?
The sheets themselves are language agnostic. You can solve the problems using any language of your choice Java, Python, C++, JavaScript or Go. Explanations and patterns apply universally across languages.
13. Are these sheets useful if I already know basic DSA?
Yes. Even if you have a good grasp of DSA, Devbrainiac sheets help you refine your approach, practice high-frequency questions and prepare for advanced interviews including LLD and HLD rounds. They are ideal for sharpening your competitive edge.