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    2000+ Developers Preparing for Technical Interviews

    Master DSA &
    Land Your Dream Job

    Solve problems inspired by real interviews at top tech companies. Build consistency, track your progress, and get job-ready one challenge at a time.

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    60+ Interview Problems
    Track Progress
    Daily Challenges
    2000+ Learners
    2000+
    Active Users
    60+
    Problems
    94%
    Success Rate
    120+ developers started this week
    From the Founder

    Why I Built This

    Learning DSA could be the hardest thing you will ever do in your tech career.

    I made this platform to relieve some of that pain.

    😰

    The Problem

    When you go to platforms where there are way too many problems and you don't know where to even start, I hear you.

    ✨

    The Solution

    This platform exists so you know where to start.

    👨‍💻

    My Commitment to You

    I am a solo developer working on this project, writing tutorials, blogs, making videos so you can understand how algorithms work, how to solve a hard problem in an interview and get the confidence you need to say:

    "I can do DSA"

    — Saran, Founder of Codstak

    Platform Features

    Everything You Need to Ace Coding Interviews

    Master data structures & algorithms with our comprehensive platform designed for interview success

    📚

    Structured Learning Path

    Master DSA concepts from basics to advanced with guided courses

    • Easy to Hard Problems
    • Topic-wise Organization
    • Detailed Explanations
    • Progress Tracking
    ⚡

    Daily Challenges

    Build consistency with curated problems delivered every day

    • New Problem Daily
    • Difficulty Levels
    • Solution Discussions
    • Streak Tracking
    👥

    Community & Discussion

    Connect with fellow developers and share solutions

    • Solution Discussions
    • Ask Questions
    • Share Approaches
    • Learn from Others
    📊

    Activity Tracking & Streaks

    Visualize your progress with GitHub-style contribution heatmap

    • 365-Day Activity Heatmap
    • Daily Streak Counter
    • Challenge Completion Stats
    • Progress Dashboard
    📊New Feature

    Track Your Progress Like a Pro

    Stay motivated with your personal GitHub-style activity heatmap. Build streaks, visualize your consistency, and watch your progress grow over time.

    🔥
    24
    Day Streak
    47 challenges completed this year
    Less
    More

    Sign up today to unlock your personal dashboard with activity tracking

    Track daily activity
    Build streaks
    Visualize progress

    Ready to Master DSA & Ace Your Interviews?

    Join 2000+ developers practicing daily with problems from real tech interviews at Google, Amazon, Microsoft, and more

    Practice with Real Interview Problems

    These aren't generic coding exercises - they're designed to help you land your next job.

    Data Structures & Algorithms

    Master fundamental data structures and algorithms

    View All Data Structures & Algorithms Challenges
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