System design is one of the most important skills for software engineers today. Whether you're applying for senior or staff-level positions or just looking to level up your architectural knowledge, understanding how to design systems at scale is a deciding factor for top tech companies.
To help you master these concepts and pass your interviews, we just published a comprehensive, 3-hour course on the freeCodeCamp.org YouTube channel: Design Software Systems Like a Senior Engineer.
This complete course provides a practical, five-step framework for structuring your thinking, asking the right clarifying questions, and tackling vague requirements under pressure.
This course grounds your learning in real-world production system examples that show up most often in interviews. You will learn how to apply the framework to build high-level architectures for massive platforms, including:
Spotify
Booking.com
WhatsApp
You'll also learn the five dimensions you are actually evaluated on during system design interviews. You'll learn how to start with a simple architecture and naturally build upon it by identifying bottlenecks, managing your time, calculating storage and traffic estimates, and deeply discussing the trade-offs of different technical decisions (like choosing WebSockets over HTTP or adding load balancers).
Watch the full course now on the freeCodeCamp.org YouTube channel (3-hour watch).
