Company Overview Greenmark Construction is a technical outsourcing firm providing skilled workers to various industries and workplaces in Singapore. Job Summary As a Security Engineer at Greenmark Construction, you will lead and execute preventive maintenance and physical security operations to ensure system integrity and safety across facilities. Responsibilities Perform monthly, quarterly, and annual preventive maintenance on IDS, turnstiles, emergency exits, access controllers, CCTV systems, NVRs, and ACS servers, documenting all activities in the CMMS and ensuring regular system backups Administer employee access control by issuing, replacing, and configuring badges/cards and managing access rights and profiles Manage secure storage and movement of precious metals by controlling cages, motion sensors, keys, trolleys, and monitoring associated CCTV and reclaim systems Evaluate and implement requests for CCTV, ACS, and turnstile installations or modifications related to facilities, m...