Hans Gielen, based in Port Adelaide, South Australia, Australia, is currently a Senior Water and Wastewater Engineer at Unitywater, bringing experience from previous roles at Unitywater. Hans Gielen holds a 2015 - 2015 Working at heights @ Civil Contractor Federation / Civil Train. With a robust skill set that includes Factory, Calibration, Wastewater Treatment, Management, Polymers and more, Hans Gielen contributes valuable insights to the industry. Hans Gielen has 1 email on RocketReach.