Domains
Pick a domain. Get a rating.
Each domain has free practice, a roadmap and a timed rated test. Your rating in each one is separate, so you can show recruiters exactly where you are strong.
DSA
Data structures, algorithms, and problem-solving fundamentals.
Open DSA →Web Development
Frontend, backend, and full-stack web engineering.
Open Web Development →Mobile Development
Android, iOS, and cross-platform app development.
Open Mobile Development →Cloud & DevOps
Cloud infrastructure, CI/CD, containers, and deployment.
Open Cloud & DevOps →Data Science & ML
Data analysis, machine learning, and applied statistics.
Open Data Science & ML →Cybersecurity
Application security, network security, and secure coding.
Open Cybersecurity →System Design
Designing scalable, reliable backend systems.
Open System Design →Databases
Relational and NoSQL data modeling, indexing, and query design.
Open Databases →QA & Testing
Manual and automated testing, test strategy, and quality process.
Open QA & Testing →CS Fundamentals
Operating systems, computer networks, and object-oriented design — the core CS subjects every placement interview asks about.
Open CS Fundamentals →AI & Generative AI
LLMs, embeddings, prompting, retrieval-augmented generation, and building with AI responsibly.
Open AI & Generative AI →UI/UX Design
User research, interaction design, accessibility, and design systems — the thinking behind interfaces people can actually use.
Open UI/UX Design →Java
Core Java, object-oriented design, collections, exceptions and concurrency: the language behind most enterprise and Android back ends.
Open Java →Python
Python fundamentals, data structures, object-oriented Python, files and the language features interviewers ask about.
Open Python →C & C++
Pointers, memory, object-oriented C++ and the STL: the base for systems, embedded and competitive programming.
Open C & C++ →Embedded & IoT
Microcontrollers, sensors, communication protocols, RTOS and connected devices, from firmware to the cloud.
Open Embedded & IoT →Blockchain & Web3
How blockchains work, smart contracts, tokens, wallets and the security basics of decentralised applications.
Open Blockchain & Web3 →Business Analytics
Excel, SQL, statistics, dashboards and the business thinking that turns data into decisions.
Open Business Analytics →Aptitude
Quantitative aptitude, logical reasoning, verbal ability, and data interpretation — the first-round filter at most Indian campus drives (TCS, Infosys, Wipro, Accenture).
Open Aptitude →