Lead Technical Officer

JobsCloseBy Editorial Insights

Downer seeks a Lead Technical Officer for the Sydney SEA2273 Fleet Information Environment Modernisation program to lead Level 3 support for the Minerva ICT environment and act as the escalation point for complex incidents, including on call. You’ll manage Exchange, Active Directory, Skype, Citrix VDI and hypervisors, keep networks secure and available in DDIL conditions, and draft SOPs and guides to support operations. Requirements include strong MS Exchange and AD, Citrix VDI and hypervisor admin skills, proven technical leadership, ITIL v4, vendor collaboration, and current security clearance with ITAR. Onsite in Sydney Mon Fri with on call. Tips: tailor your resume to defence, quantify outcomes, demonstrate mentoring, document achievements, show after hours readiness, and align with Downer values.

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 is Australia’s multi-disciplinary advisory and delivery partner of choice for our clients in Defence and Government.

We currently have an opportunity for a Lead Technical Officer in Sydney, NSW to work on SEA2273 – Fleet Information Environment Modernisation projects.

What You’ll Do

This role offers a broad scope, with key role responsibilities including:

• Lead a technical support team providing Level 3 support for the Minerva ICT environment, supporting mission-critical Navy operations.
• Act as the escalation point for complex and high-priority technical incidents, including High Priority Incidents and on-call resolver activities.
• Oversee the management of complex ICT infrastructure, including messaging environments, Active Directory, Exchange, Citrix VDI, hypervisors and supporting platforms.
• Support deployed and degraded network environments, ensuring systems remain available, secure and resilient in DDIL conditions.
• Develop, approve and maintain technical artefacts, including SOPs, build guides and documentation to support Minerva operations and ship set-to-work activities.

What You’ll Bring

• Strong technical expertise across Microsoft Exchange, Active Directory, Skype, Citrix Virtual Desktop Infrastructure and hypervisor administration.
• Proven experience in technical leadership, service desk management or advanced ICT support within Defence Fleet or highly secure ICT environments.
• Strong understanding of ITIL v4 processes, including incident management, monitoring, service level management and operational support.
• Experience supporting complex ICT infrastructure, applications and hardware, with the ability to work closely with vendors and partner support teams.
• Excellent written and verbal communication skills, with the ability to train and mentor onsite technical staff and ship CIS teams.

Due to the nature of the work, you are required to currently hold and maintain  Security clearance prior to commencement. Compliance with International Traffic in Arms Regulations (ITAR) requirements will also be an inherent requirement.

This role is based in Sydney only and requires onsite attendance.. The role operates Monday to Friday during business hours, with on-call and occasional after-hours work required.

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 is 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 Perks@Downer.
• 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.