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The smarter way to
crack campus interviews

Structured handbooks, an AI interview copilot, and a performance tracker — everything you need to land your first SDE role, in one place.

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335+ CS topics AI interview copilot In-browser code runner Mock interview grader
two_sum.py
335+ Structured Topics
7 Core Subjects
500+ Interview Questions
7 PDF Handbooks
1 AI Copilot
What's inside GrindOS
AI Copilot
Live
Q: Explain deadlock in 30 seconds for an interview.
→ Deadlock: two processes each hold a resource the other needs. Four conditions: mutual exclusion, hold & wait, no preemption, circular wait.
Code Runner
Judge0
def two_sum(nums, target):
  seen = {}
  for i, n in enumerate(nums):
    if target-n in seen:
      return [seen[target-n], i]
Mock Interview
Graded
Q: Difference between TCP and UDP?
8
/ 10
Strong answer
Study Progress
DBMS
Database Systems · Chapter 7
Normalization → ✓ Done
Transactions → ✓ Done
Indexing & B-Trees → Next
DSA Tracker
LeetCode
Today: Sliding Window Maximum
142
solved
12-day streak
PDF Handbooks
Exported
7 print-ready cram booklets, generated from source.
OS · DBMS · CN · OOP
SQL · System Design · Projects
AI Copilot
Live
Q: Explain deadlock in 30 seconds for an interview.
→ Deadlock: two processes each hold a resource the other needs. Four conditions: mutual exclusion, hold & wait, no preemption, circular wait.
Code Runner
Judge0
def two_sum(nums, target):
  seen = {}
  for i, n in enumerate(nums):
    if target-n in seen:
      return [seen[target-n], i]
Mock Interview
Graded
Q: Difference between TCP and UDP?
8
/ 10
Strong answer
Study Progress
DBMS
Database Systems · Chapter 7
Normalization → ✓ Done
Transactions → ✓ Done
Indexing & B-Trees → Next
DSA Tracker
LeetCode
Today: Sliding Window Maximum
142
solved
12-day streak
PDF Handbooks
Exported
7 print-ready cram booklets, generated from source.
OS · DBMS · CN · OOP
SQL · System Design · Projects
Features

Everything you need.
Nothing you don't.

Built for engineering students preparing for product companies, startups, and GATE.

01
In-browser Code Runner
Write, run, and test code directly in the browser via Judge0. No setup, instant execution.
def two_sum(nums, target): seen = {} for i, n in enumerate(nums): if target - n in seen: return [seen[target - n], i] seen[n] = i
▶ [0, 1]    Runtime: 40ms    Memory: 17.4 MB
02
AI Interview Copilot
Ask any CS concept. Get talking points, analogies, and diagrams on demand.
What is a deadlock?
Two processes each hold a resource the other needs — creating a circular wait that never resolves.
03
Mock Interview Grader
Type an answer, get scored out of 10 with specific feedback. Practice until airtight.
8  / 10
Strong answer — good coverage of TCP vs UDP
04
Performance Tracker
Log DSA streaks, habits, job applications, and study hours — local-first.
Sliding Window✓ done
Binary Search✓ done
Two Pointers→ active
05
Handbooks & Company Prep
7 PDF booklets + company-wise question banks. Built like engineering docs, not college notes.
OS DBMS CN OOP SQL Sys Design Projects
Curriculum

7 subjects. Fully covered.

Every topic a placement interviewer can throw at you — structured, searchable, and interview-focused.

SubjectCoverageStatus
🗄️ Database Systems 94 topics · 14 chapters Live
📈 Data Structures & Algorithms 72 topics · 15 chapters Live
🌐 Computer Networks 40 topics · 10 chapters Live
💻 Operating Systems 17 topics · 5 chapters Live
📦 Object-Oriented Programming 15 topics · 4 chapters Live
🌍 Web Development 62 topics · 8 chapters Live
🧠 Quantitative Aptitude 35 topics · 10 chapters Live
How It Works

From zero to offer-ready.

A clear path from fundamentals to cracking interviews at top companies.

STEP 01
Master the Fundamentals
Work through structured topic pages with definitions, analogies, architecture diagrams, and interview talking points.
STEP 02
Run Code, See It Work
Write solutions in the browser using the Judge0-powered code runner. Instant execution, zero setup.
STEP 03
Practice Mock Interviews
Get scored by the AI copilot, identify weak spots, and refine answers until they're interview-ready.
STEP 04
Track & Stay Consistent
Log habits, DSA problems, and job applications. Build streaks and walk into placements with confidence.

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