I'm a system administrator in I&IT Systems here at Cal Poly Pomona.
I've spent a great deal of time working on the Tahoe-LAFS project. Our goal is to provide a fault-tolerant distributed filesystem with provider-independent security -- that is, a filesystem in which the confidentiality and integrity of the data stored in the filesystem is not dependent on the servers that make up the filesystem. Practically speaking, this means that someone who stores your data can't look at your data, can't reveal your data to anyone else, and can't trick you into downloading and using bogus data instead of your data. We use strong cryptography to achieve this goal, and use capabilities to refer to files in the filesystem. I worked on the implementation of the servers of happiness file health measurement, created an initial implementation of MDMF mutable files as a Google Summer of Code student, and developed a share placement algorithm inspired by the servers of happiness file health measurement as part of my master's thesis here at Cal Poly Pomona.
Recently, I've been working on the vSPC.py VMware virtual serial port concentrator. In particular, I contributed patches to make vSPC.py support encrypted connections between virtual machines and itself, contributed a logging VM backend, and am now working on a new version of the administration protocol and other changes to make vSPC.py behave more like a traditional serial port concentrator. You can follow along with my changes on my GitHub repository.
I've contributed a few small patches to some other projects, which can probably be found by Googling some combination of my name and email address.
Before I was a system administrator, I worked for Cal Poly Pomona as a web developer, first at Cooperative Education, where I maintained and eventually re-wrote the Cooperative Education website, and then at I&IT Web Development, where I wrote DZcopy (now offline), ZFScontrol, and re-implemented Spinneret before leaving the department for my GSoC project and, later, I&IT Systems.
When I was an undergraduate, I was the system administrator and webmaster (and Science Council Representative) for the Computer Science Society club. I developed the CMS that (as of 2011) powers the site, adapting the design from templates that I found on the internet, and wrote various scripts to make life as a club officer a little easier. They'll probably rewrite the CMS at some point (or else move to a better FOSS CMS that they don't have to write), but I'm pleased that the one that I wrote has lasted as long as it has.
You can email me at kacarstensen@csupomona.edu.