In 1982, Jenk joined the Swire Group, the Hong Kong based conglomerate. He worked with its transport-related interests in the Australian, Pacific, Asian and Persian-Gulf regions. With each posting Jenk was responsible for: day-to-day operations; capital budgeting (vessels and aircraft) as well as processes improvements. These postings included: road transport; fishing/cold-storage; logistics; airline management; satellite navigation; as well as bulk/container shipping businesses. Given the nature of the businesses and locations, Jenk was actively engaged in supporting relief efforts for: the 1983 Ash Wednesday fires in Adelaide; the 1984 evacuation for the Rabaul eruption and; the 1985 safe shipping transit in the Persian Gulf during the First Gulf War.