Man-orchestra, employed to do things that philosophers never dreamed of.
But seriously: Architecture, Algorythms, data transfer on different mediums and protocols, automotive software/hardware.
Q&A for professional and enthusiast programmers
Q&A for professional system and network administrators
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for Information security professionals
Q&A for pro webmasters
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Q&A for professional programmers interested in conceptual questions about software development
Q&A for Ubuntu users and developers
Q&A for computer enthusiasts and power users
Q&A for cartographers, geographers and GIS professionals
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for users and developers of hardware and software for Raspberry Pi
Q&A for administrators, end users, developers and designers for ExpressionEngine® CMS