Certis Security Australia is seeking a proactive Security Officer to support access control, alarm response and patrols at Airservices, TGE and Caterpillar facilities. This casual role requires vigilance, clear communication and a commitment to safety in a high-security workplace. You will monitor CCTV and security systems, complete reports, and coordinate with site managers and emergency services. Mandatory VIC Security Licence, First Aid/CPR, ASIC clearance, and flexibility to work