I like solving difficult problems, specially those that require mixing theoretical knowledge with practical matters.
My main programming languages are, in no particular order, Perl, C and Common Lisp, but I can also, with different degrees of comfortability, use several others as Python, Prolog, C++, Scala or even Java.
I have learned and forgotten Haskell twice.
I don't like web programming. Databases are boring.
Q&A for professional and enthusiast programmers
Q&A for system and network administrators
Q&A for computer enthusiasts and power users
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for peer programmer code reviews
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Q&A for professional, enthusiast and amateur photographers
Q&A for professional mathematicians
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for passionate videogamers on all platforms
Q&A for enthusiasts and power users of the Android operating system
Q&A for professional programmers interested in conceptual questions about software development
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for people studying math at any level and professionals in related fields
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Q&A for users and developers of hardware and software for Raspberry Pi
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Q&A for those using, extending or developing Emacs
Q&A for scientists using computers to solve scientific problems
Q&A for Ubuntu users and developers