BOFFIN
boffin
(noun) (British slang) a scientist or technician engaged in military research
Source: WordNet® 3.1
Etymology
Noun
boffin (plural boffins)
(Australia, Britain, informal) An engineer or scientist, especially one engaged in technological or military research. [from 1930s]
Synonym: backroom boy
(Australia, Britain, informal, by extension) A person with specialized knowledge or skills, especially one who is socially awkward; (in a weaker sense) an intellectual; a smart person.
Synonyms: brain, brainiac, egghead, Thesaurus:intelligent person
Source: Wiktionary