Taken from Michalis Avraam's blog is an interesting (and comprehensive) list of skills that every person interested in a GIS career should see. Here is an excerpt from the posting, as well as the link to the rest of the article.
"I have been lucky enough to organize a GIS Day '09 career event at the university of Washington, joined by Harvey Arnone of city of Seattle, Marty Balikov of ESRI Olympia and Dane Springmeyer, freelance geospatial developer. The discussion was titled "What are the essential skills to succeed as a GIS Analyst", and I have compiled some notes to help with all aspiring GIS Professionals out there. Feel free to add more details in the comments section as you see fit.
The discussion ranged from skills to succeed in an organization using GIS to support business decisions (City of Seattle), ESRI, the leading GIS software producers and freelance development using GIS technologies. There is significant overlap for the required and desirable skills, but also some slight differences. I will list the skills in no significant order and provide a brief explanation. If a skill is something I personally added, it will start with an asterisk."
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