Jennen is company director of Jennen Shoes and String Musicians Australia.

Established in 2007, Jennen Shoes is a Melbourne business that designs and retails men’s height-increasing footwear. Over 50,000 men stand taller with Jennen, including Hollywood celebrities, Australian politicians and AFL players.

String Musicians Australia launched in 2011 and provides live classical music and entertainment for wedding and corporate events Australia-wide. With thousands of performances Australia-wide, String Musicians Australia is one of Australia’s leading string quartet booking agencies.

In 2018, Jennen inaugurated the Melbourne Violin Competition, which saw fifty-three violinists from fourteen countries compete in Stage 1 of the competition. The 2018 Melbourne Violin Competition is a non-profit venture sponsored by Jennen Shoes.