System Administrator | Active Directory

System Administrator | Active Directory & VoIP - Sydney Join to apply for the System Administrator | Active Directory & VoIP - Sydney role at Downer Professional Services 1 day ago Be among the first 25 applicants Join to apply for the System Administrator | Active Directory & VoIP - Sydney role at Downer Professional Services Downer Professional Services provided pay range This range is provided by Downer Professional Services. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range A$120,000.00/yr - A$156,000.00/yr Join our Downer Professional Services team and play a key role in delivering complex defence and national security projects that safeguard Australia’s future. Downer Professional Services comprises of three business units our Technical, Advisory, and Capability consulting practice, and Team Downer , which partners with CASG and NSSG as a major service provider to Defence . Together, we are a multi-disciplinary advisory and delivery partner of choice for clients across Defence and National Security. We currently have an opportunity for a System Administrator in Canberra or Sydney to work on the Fleet Information Environment (FIE) Modernisation project. What You’ll Do This role offers a broad scope, with key role responsibilities including: Mission-Critical IT Support : Provide advanced technical support in deployed Defence environments, diagnosing and resolving complex issues promptly. System Compliance & Maintenance : Ensure ICT configurations meet Defence security protocols, patch and upgrade Minerva systems, and manage digital certificates. Infrastructure & Operations Management : Oversee messaging infrastructure in multi-forest environments, integrate and maintain ICT systems, and manage user accounts. Documentation & Training : Create SOPs, build guides, technical documentation, and mentor onsite staff, including ship CIS teams. Incident & Vendor Coordination : Manage incident priorities to meet SLAs, collaborate with partner teams, and engage vendors to resolve system/component issues. What You’ll Bring Core Technical Expertise : Strong knowledge of Microsoft Exchange, Active Directory, Skype, Citrix Virtual Desktop, and hypervisor administration. Additional Systems Experience : Hands‑on familiarity with XMPP chat tools, Lotus Domino, and VoIP technologies. Communication Strengths : Excellent interpersonal, written, and verbal communication skills for effective stakeholder engagement. Broader Technical Exposure : Experience or familiarity with Fortinet, Cisco, HYCU, Titus, Liquidware, Ivanti, Red Hat, Tanium, Netbox, Carbon Black, and Elastic Monitoring. Professional Attributes : Proactive problem‑solving, ability to manage multiple priorities, prior Minerva experience, and capability to operate in secure, regulated environments. Due to the nature of the work, you are required to currently hold and maintain a minimum Negative Vetting 2 or higher Security clearance as required by the Commonwealth. In some instances, compliance with International Traffic in Arms Regulations (ITAR) requirements may also be an inherent requirement. More than anything, you’ll bring a strong work ethic, a positive attitude, and a commitment to delivering high-quality outcomes for our clients. Why Downer Professional Services At Downer Professional Services , we’re not just a workplace – we’re a business dedicated to contributing to the shaping of the future of defence in Australia. As the country’s only sovereign prime, we’re committed to making a real difference in protecting Australia’s interests. What it means to belong at Downer Professional Services Meaningful work: Help to deliver critical Defence projects that protect Australia and shape its future. Professional development: Access career mapping, accelerated learning programs, and shared learning through our Communities of Practice. Great perks: Enjoy discounts on healthcare, retail, vehicles, and more through Veteran support: Benefit from initiatives like up to 20 days of Reservist Leave to stay connected post-service. You want your work to matter and so do we. With over 26,000 people across Australia, New Zealand and the Pacific, our team is made up of individuals with unique perspectives, backgrounds, and ideas. We know that diversity makes us stronger and we actively celebrate it through our commitment to inclusion and belonging. We’re committed to building a team that reflects the diverse communities we serve and we welcome people of all ages, genders, sexual orientations, cultures, abilities, and lived experiences. We especially encourage applications from those whose voices have traditionally been underrepresented in our industry, including women, Aboriginal and Torres Strait Islander Peoples, Māori and Pasifika Peoples, veterans, people with disability, and neurodivergent individuals. Even if your experience doesn’t align perfectly with this role, we’d still like to hear from you. If it feels like the right fit, apply – potential counts, and so do you. As a WORK180 Endorsed Employer, we support flexibility that works for your life, inclusive leadership that values your voice, and equitable access to opportunity so you can do your best work and bring your whole self to it. If you need support or adjustments through the recruitment process, just let us know, we’re here to help you put your best foot forward. Seniority level Associate Employment type Full‑time Job function Information Technology Industries Defense and Space Manufacturing #J-18808-Ljbffr