Web Infrastructure Specialist (whatever that really means) for a university Web Portal, built in house using Ruby on Rails.
Stack Overflow
Q&A for professional and enthusiast programmers
WordPress Answers
Q&A for WordPress developers and administrators
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Server Fault
Q&A for professional system and network administrators
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
