Best known as Ellison in Marvel’s Daredevil and The Punisher, Geoffrey’s other TV credits include AppleTV's Foundation, Maniac, FBI, The Resident, The Deuce, BULL, Madam Secretary, House of Cards, Elementary, The Blacklist, Harlan Coben's Shelter, The Americans, Person of Interest, Damages, Smash, The Big C, Sopranos, Bored to Death, Brotherhood, Life on Mars, Ed, The Daily Show, and all of the Law & Order’s.

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Films include Call Jane, directed by Phyllis Nagy, the Coen Brothers' Hail, Ceasar!, American Pickle (with Seth Rogen), Michael Mann's Public Enemies, Fair Game, Hot Air, Man on a Ledge, Creep Box, Black Jack: The Jackie Ryan Story, MIB3, Bird People, Thanks for Sharing, The Longest Week, When in Rome,  One Last Thing, The Notorious Betty Page, and the short film 411 with F. Murray Abraham.

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Geoffrey has been seen on stage in Side Man (Broadway), Allan Leicht's My Parsifal Conductor (The Director's Company), Warren Leight's Sec 310, Row D, Seats 5&6 (59 E 59th Street), Dinner With Friends (Variety Arts), Julie Taymor's Titus Andronicus (TFANA), Saturday Sunday Monday, Denial (Long Wharf), Death of a Salesman (Royal Alex with Judd Hirsh), Talley's Folly (St Louis and Cincinnati), Romeo and Juliet (Acting Company), and Lone Star (London and Edinburgh).

He has also been featured in a number of Web-series, including The ONION, Candice Bushnell's The Broadroom, Good Medicine, and The Stay-at-Home Dad, and the title role of Karl Manhair in the short Karl Manhair, Postal Inpsector. He has been featured in over 200 television and radio commercials, including two award-winning campaigns: Let It Out (Kleenex as the Good Listener), and Fair Enough (part of the Truth campaign), has 8 audio books to his credit, including the award winning The Family, by David Laskin, and has voiced a number of Video games, including Beverly in GTA5.

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Geoffrey graduated magna cum laude from Amherst College with a degree in theater. During his junior year, he attended the National Theater Institute (Eugene O’Neill Theater Center in Conn), and continued his training at the Royal Central School of Speech and Drama, in London, England.