Raul Junco’s newsletter on system design and software architecture, aimed at engineers who want to build better software. System Design Classroom is published from Raul Junco and focuses on system design, software architecture and engineering.
It is aimed at developers. It is published on Substack. Public sources put its audience in the 50K–100K subscriber range.
No public sponsorship programme for System Design Classroom was found at the time of research. Listing details were last verified in September 2026.