computernerd

listen to the pronunciation of computernerd
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techie
(also techy - plural techies) A person who is an expert in technology, especially computing
a technician who is highly proficient and enthusiastic about some technical field (especially computing)
{i} one who is an expert in electronics; technician
one who works with, or has an interest in, technology
Some people refer to someone who works in a technological industry, especially computing, as a techie. someone who knows a lot about computers and electronic equipment