Currently, Dieter Widmer occupies the position of Chairman of Ilford Property Switzerland GmbH, Director & Co-Owner at EquityNova AG, Director & Co-Owner at EnergyOn Holding Ltd., Director & Co-Owner at Blattmann Schweiz AG and Director & Co-Owner at Rp Invest AG. Dieter Widmer is also on the board of Orell Füssli Holding AG, Dr. Eicher+Pauli AG, Mühle Walther AG and e+p holding AG and Member-Foundation Council at Kuoni & Hugentobler Foundation, Member-Red Cross Council at Swiss Red Cross and Co-Owner at Kelag Systems AG.

Dieter Widmer previously held the position of Partner at KPMG Switzerland.