By Day: Scientist/Engineer
By Night: Hopefully asleep
Started in the days of cards. Fortran first computer language. vi from early 80's, unix, RSX-11m, VMS.
Physical sciences, parallel programming, experimentalist in to 20th century, computationalist/theorist in the 21st.
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Mathematics
Q&A for people studying math at any level and professionals in related fields
Computational Science
Q&A for scientists using computers to solve scientific problems
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Super User
Q&A for computer enthusiasts and power users
Home Improvement
Q&A for contractors and serious DIYers
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Mathematica
Q&A for users of Wolfram Mathematica
Politics
Q&A for people interested in governments, policies, and political processes
Latin Language
Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Server Fault
Q&A for system and network administrators
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
MathOverflow
Q&A for professional mathematicians
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Physics
Q&A for active researchers, academics and students of physics
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Information Security
Q&A for information security professionals
Stack Overflow
Q&A for professional and enthusiast programmers
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence