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How to Prepare for FAANG Interviews in 2025: Complete Guide

January 15, 202512 min read

Introduction

Landing a job at a FAANG company (Facebook/Meta, Amazon, Apple, Netflix, Google) is the dream for many software engineers. These companies offer exceptional compensation, challenging problems, and career growth opportunities that are hard to find elsewhere.

In 2025, the interview process has evolved, but the core requirements remain the same: strong problem-solving skills, solid understanding of data structures and algorithms, and the ability to communicate your thought process clearly.

The 100-Day Preparation Timeline

Weeks 1-4: Foundation Building

Start with the fundamentals. Even if you think you know arrays and strings, review them. Most interview problems build on these basics.

Focus areas:

  • Arrays and Strings (manipulation, searching, sorting)
  • Hash Tables (when to use them, collision handling)
  • Two Pointers technique
  • Sliding Window pattern

    • Daily routine:

  • 1 problem per day (don't rush)
  • 30 minutes attempting the solution
  • 30 minutes understanding the optimal approach
  • Document what you learned

    • Weeks 5-8: Core Data Structures

    Now tackle the data structures that appear in 70% of interviews.

    Focus areas:

  • Linked Lists (reversal, cycle detection, merge)
  • Stacks and Queues (implementation, applications)
  • Binary Trees (traversals, BST operations)
  • Heaps/Priority Queues

    • Weeks 9-12: Advanced Topics

    This is where many candidates struggle. Spend extra time here.

    Focus areas:

  • Graphs (BFS, DFS, shortest path)
  • Dynamic Programming (start with 1D, then 2D)
  • Backtracking
  • Tries

    • Weeks 13-14: Mock Interviews & Review

    The final two weeks should focus on:

  • Timed mock interviews
  • Reviewing weak areas
  • Spaced repetition of previously solved problems

    • Why Most Candidates Fail

  • **Grinding without understanding** - Solving 500 LeetCode problems means nothing if you can't recognize patterns
  • **Skipping system design** - Senior roles require system design knowledge
  • **Poor communication** - Interviewers want to hear your thought process
  • **No mock practice** - Real interviews have time pressure and someone watching you

    • How DSA 100 Days Helps

    Our platform is designed specifically for FAANG preparation:

  • **100 curated problems** covering every pattern
  • **AI tutor** that explains concepts without giving away answers
  • **Mock interviews** simulating real FAANG conditions
  • **Spaced repetition** so you never forget what you learned
  • **Progress tracking** to stay motivated

    • Conclusion

    FAANG interviews are challenging but absolutely achievable with the right preparation. Focus on understanding patterns, not memorizing solutions. Practice explaining your thought process. And most importantly, stay consistent.

    Ready to start your journey? [Sign up for DSA 100 Days](/signup) and begin your 100-day path to FAANG.

    Ready to Start Practicing?

    Join DSA 100 Days and get AI-powered tutoring for every problem.