Senn was born in Paris, France, and grew up in Sugar Land, Texas, a suburb of Houston.

After high school Senn moved to New York City, where he attended Atlantic Theater, while working for fashion brands like Tom Ford and Gucci.

[citation needed] Since 2002, Senn has modeled consistently for Gucci, Tom Ford, Versace, Dsquared, Tommy Hillfiger, Nautica.

[citation needed] Senn had a lead role in the 2011 movie Video Girl, costarring Meagan Good.

[10][11] In 2023, he starred as Coby Mason in A Cowboy Christmas Romance, which featured the first sex scene to be included in a Lifetime holiday movie.