I work for Braintree, developing payment services for online and mobile businesses. I regularly use seven programming languages, several web frameworks, numerous system administration and deployment tools, git, vim, and tmux, mostly from within Debian virtual machines manged with Vagrant.
During high school I worked as a technology assistant at the Free Library of Philadelphia. This led to a number of freelance jobs doing technical support, web development, and computer training for local individuals and businesses.
As Web Developer, Server Admin, and Technology Directory for student government, I managed groups.northwestern.edu, hosting web sites for hundreds of student groups; HereAndNow, the student home page (now NULink); and asg.northwestern.edu, the student government web site. All used PHP on the server side. HereAndNow was statically generated every half an hour as it received approximately tens of thousands of visits a day and so was hosted on university servers. The other sites were served by Apache from servers I administrated, as was email service for the student government. Our servers ran various Linux and BSD distributions.
After returning to Philadelphia, I worked as a Freelancer doing Web Development for small businesses. My clients included nonprofits, music studios, and game developers.