All courses
18 structured paths, 941+ lessons. Write and run real code in the browser, and finish with a certificate an employer can verify. One membership covers every path.
Data Structures and Algorithms
Crack the interview — from arrays to graphs to dynamic programming, with the patterns that keep coming up.
Frontend Development
Build what users see and touch — semantic HTML, modern CSS, JavaScript, TypeScript and React, shipped fast and accessible.
Backend Development
Build what stands behind the interface — Node and Express APIs, databases, authentication, testing and deployment.
Python
Learn Python properly — from syntax and data structures to OOP, files, APIs, and a real project.
Java Programming
Learn Java properly — from the JVM and static typing to OOP, collections, and a real project. Free with membership.
Artificial Intelligence
Understand and use modern AI — LLMs, prompt engineering, building with APIs, and using it responsibly.
System Design
Design systems that scale — load balancing, caching, databases, queues, reliability, and real interview-style case studies.
DevOps
Ship and run software reliably — Linux, CI/CD, Docker, Kubernetes, cloud, and infrastructure as code.
CS Fundamentals
The computer-science bedrock — networks, architecture, operating systems, security, and distributed systems.
Database
Design and query databases with confidence — SQL, PostgreSQL, schema design, optimization, and transactions.
Git & GitHub
Version control from your first commit to confident teamwork — branches, pull requests, and real workflows.
Machine Learning
Build real ML — the workflow, supervised and unsupervised learning, evaluation, and neural networks.
Cybersecurity
Defend and test systems ethically — foundations, network security, pentesting, blue-team ops, and governance.
Data Analysis
Turn data into decisions — Excel, SQL, Python, pandas, visualization, and the real analyst's workflow.
Career Foundation
Land the role: define your goals, build a standout CV and LinkedIn, and walk into interviews prepared.
Germany Career Preparation
Everything to get hired in Germany — the job market, Lebenslauf, Anschreiben, work culture, and relocation.
German Language
From absolute beginner to B1 — grammar, everyday vocabulary, real conversation, and workplace German.
Mechanical Engineering
Core mechanical foundations — engineering drawing & CAD, materials, thermodynamics, fluids, and manufacturing.