Eight roadmaps, one place to start.
Structured routes through software engineering: the server you build, the systems you design, the surface users touch, the pipelines that ship and move data, the defenses that protect it, and the fundamentals underneath. Every topic links to a deep dive, simulator, or curated resource. These are the branches — the trunk, one sequenced route from zero with budgets attached, is the apprenticeship.
Backend Engineer
From "what is HTTP" to "I can design a distributed system."
OpenSystem Design
From "what's a load balancer" to "I can design Twitter."
OpenFrontend Engineer
From "how the browser loads a page" to "I can design a frontend."
OpenDevOps & SRE
From the Linux shell to reliability engineering.
OpenSecurity Engineer
From cryptography to cloud defense.
OpenDSA & Problem-Solving
Data structures, algorithms, and interview patterns.
OpenData & ML Engineering
From SQL to model serving.
OpenCloud Engineer
From "what is a VPC" to multi-region production infrastructure.
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