Jack Kinsella was born and raised in Ireland then moved to England where he read law at Oxford University. Soon after graduating, he realised that the cramped cubicles of a London law firm weren't exactly his cup of tea. He quickly quit corporate claustrophobia, taught himself to program in Ruby on Rails, and used these skills to build himself Oxbridge Notes, the UK's largest marketplace for legal study materials.

While living in Berlin and growing his business, Jack ran a private "growth hacker" group to discuss online marketing techniques. Through years of these closed-room conversations, he amassed a collection of strategies that he later published in his book, Entreprenerd.

Jack also co-founded Bolivian Express, an English-language magazine in Bolivia, and he likes to compose electronic music and blog at https://www.jackkinsella.ie.