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Software Development Engineer
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Stack Overflow
Q&A for professional and enthusiast programmers
Super User
Q&A for computer enthusiasts and power users
Server Fault
Q&A for system and network administrators
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Physics
Q&A for active researchers, academics and students of physics
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Information Security
Q&A for information security professionals
Software Recommendations
Q&A for people seeking specific software recommendations
Project Management
Q&A for project managers
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Personal Finance & Money
Q&A for people who want to be financially literate
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Artificial Intelligence
Q&A for people interested in conceptual questions about life and challenges in a world where "cognitive" functions can be mimicked in purely digital environment
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Home Improvement
Q&A for contractors and serious DIYers
Code Review
Q&A for peer programmer code reviews
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Mathematics
Q&A for people studying math at any level and professionals in related fields
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Web Applications
Q&A for power users of web applications
Academia
Q&A for academics and those enrolled in higher education
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields