Trade qualified in Refrigeration and Air Conditioning, Nathan has worked on a varying amount of equipment from wall hung splits to large chiller sets in both the commercial and residential spaces. During his time at Siemens, Nathan has been responsible for project management, system design and engineering as well as running the Sydney building automation service team. After the first year of working at Siemens, Nathan was appointed the Service Technical Branch Champion for Apogee in Sydney and was promoted to Team Leader the following year.