Definitions for ubergeek
A highly proficient geek (technician), a hacker.
Origin: uber (from the German über (ueber), meaning "super") + geek
The New Hacker's Dictionary
[common; often spelled with initial ü; from German über + geek] Almost synonymous with demigod; used as a compliment of someone regarded as a paragon of geek achievement and virtue. Has partially replaced earlier demigod.