I'm a software engineer in San Francisco. I try to solve hard problems. I'm responsible for building these products and businesses:
I speak regularly on building businesses, teams, and software.
Stack Overflow
Q&A for professional and enthusiast programmers
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
Mathematics
Q&A for people studying math at any level and professionals in related fields
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Ask Different
Q&A for power users of Apple hardware and software
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
User Experience
Q&A for user experience researchers and experts
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers