Jeremy began his career working on feature films in Ireland in the late nineties including John Boorman’s “The Tailor of Panama,” Rob Bowman’s “Reign of Fire,” and Alfonso Arau’s “The Magnificent Ambersons.”
In 2003, he was Associate Producer on Kevin Spacey’s independent feature film “Beyond the Sea.”
In 2004, Whelehan was a founding member of Old Vic Theatre Company. He was Assistant Director for the theatre’s inaugural production, “Cloaca" directed by Spacey. He remained with the Old Vic for three seasons as an associate director working with a host of notable directors on the main stage, including; Sir Trevor Nunn on Shakespeare’s “Richard II”, Jerry Zaks on “The Philadelphia Story”, and Robert Altman on “Resurrection Blues.
Whelehan returned to Ireland in 2008 to assist Rupert Goold in a production of Harold Pinter’s “No Man’s Land” at the Gate Theatre, Dublin, Starring Michael Gambon and David Walliams later overseeing the production’s transfer to The Duke of York’s Theatre in the West End.
That same year, Whelehan set up Treetops Productions to develop, produce and direct theatre and film projects. Treetops began producing online content, shorts, docs & interviews. Commercial clients included National Magazines, Harpers Bazaar, Hyndai & Microsoft. In 2010 Jeremy filmed the rock documentary, “An Appointment with Mr. Yeats,” at The Abbey Theatre in Dublin, a film project in collaboration with Mike Scott & the Waterboys live performance of W.B. Yeats poetry at the National Theatre of Ireland.
Treetops' first Feature Length Documentary 'Now - In the Wings on a World Stage' premiered at Tribecca Film Festival in 2014 and was released theatrically in the US, UK, Canada and Australia. 'Now' won Best Documentary at The National Film Awards 2015.