GSTECH | Our Team


GSTEC uses in-house staff for all facets of the projects it undertakes; from design and engineering through to the installation and support phases. Our staff is made up of engineering staff, control technicians, qualified electricians, trainees and electrical apprentices ensuring work quality and compliance with the relevant standards and codes.

Many of our staff have been with the company for over 5 years and the majority of our management have been with the company between 10 and 25 years. Our staff make our company, we are like family. An attitude of inclusivity, respect, collaboration, support and fun is obvious in every single one of our GSTEC teams.

Management Team

Doug McMillan

Director / Sales Manager

Ian Sweeting

Operations Manager

Liam Casey

General Manager

Greg Webb

Business Development Manager

Mark Pesavento

Business Unit Manager – Service

James Porter

Business Unit Manager – Projects

Joanne Borkowski

Building Services Engineering Manager

Andrew Bastoli

Technical Development Manager

Sevda Stewart

Financial Officer

Alex Nott

Integrated Services and Infrastructure Projects

Head Office

1 / 10-14 Lilian Fowler Place

Marrickville NSW 2204

Ph: 1300 938 216