Relevant for this page: Experience with Java, C/C++, OpenMP, MPI, Python, Lua Oh, and LaTeX, of course :)
Student of Computer Science and Physics at RWTH Aachen University.
Physics
Q&A for active researchers, academics and students of physics
Stack Overflow
Q&A for professional and enthusiast programmers
The Great Outdoors
Q&A for people who love outdoor activities, excursions, and outdoorsmanship
Mathematics
Q&A for people studying math at any level and professionals in related fields
Personal Finance & Money
Q&A for people who want to be financially literate
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Musical Practice & Performance
Q&A for musicians, students, and enthusiasts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Computational Science
Q&A for scientists using computers to solve scientific problems
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Photography
Q&A for professional, enthusiast and amateur photographers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Personal Productivity
Q&A for people wanting to improve their personal productivity