Senior Oracle Database Administrator

Brennan IT; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

Brennan is seeking a Senior Oracle Database Administrator to own and optimize Oracle environments from Sydney. You will manage day-to-day operations, performance, backups, and DR readiness while contributing to Brennan’s in-house Oracle capability and client-facing deliverables.

The role focuses on Exadata, OCI, and Oracle on Azure, with a strong emphasis on reliability, security, and continuous improvement. You will work closely with client teams to ensure excellence in service and outcomes.

Qualifications

• 10+ years hands-on Oracle DBA experience in enterprise environments.
• Experience running Oracle databases on OCI and Azure.
• Strong performance tuning and capacity planning.
• Oracle RAC, Data Guard, RMAN experience.
• Customer-facing communication and ITIL-aligned processes.

Responsibilities

• Own day-to-day Oracle database operations for client environments and resolve incidents within SLAs.
• Monitor health, capacity and performance; implement tuning and optimization.
• Administer Exadata environments, patching and health checks.
• Manage backups, patching, upgrades and recovery; ensure DR readiness.
• Maintain documentation, runbooks and knowledge base articles.
• Contribute to Brennan’s in-house Oracle capability and cross-team initiatives.

Skills

Oracle DBA

OCI

Oracle on Azure

Performance tuning

Data Guard

RAC

RMAN backup

Customer-facing

Education

OCP certification

Tools

Exadata

Oracle Cloud Infrastructure

Oracle on Azure

Job description

Be part of the team transforming business technology into impactful solutions.

True performance for our customers starts with a true belief in our people.

It’s why we’ve structured our business to help our teams, and their talents, shine bright.

It's why we’ve created a workplace where people of all backgrounds, beliefs and experiences are warmly welcomed and always empowered.

And it’s why we’ve built an organisation where real innovation, fed by passion and cultivated by collaboration, makes a genuine impact.

Because the innovative technology solutions we build, deliver and manage are only as smart as the people that power them.

What our team say

"When I joined Brennan, I knew I was becoming part of the best technical team in the country. The experience has been incredibly rewarding, professionally and personally. Brennan truly is a place where innovation thrives, and excellence is the standard."

"With it’s incredible team culture, supportive environment, and opportunities for growth, Brennan is a phenomenal place to work. I’m proud to be part of a team that values growth and collaboration and empowers women to thrive."

"Starting with Brennan as an intern was an exciting experience. Talented professionals mentored and guided me at every step, helping me hone my technical skills, gain hands‑on experience, and prepare me for more complex tasks. So much so that when I transitioned to become a Systems Engineer, I really felt the continuous learning opportunities and company support had helped make it possible."

"From my very first hour, I’ve felt seen and welcomed at Brennan and have been humbled by the support provided by my peers. In addition, our ongoing collaboration with Microsoft enables our teams with the best of their toolsets.”

Technology Governance Manager, Brennan Australia

“Every day brings something new at Brennan, ensuring there is never a dull moment. It offers great opportunities for learning and growth. And the recognition for my efforts makes me feel valued and motivated.”

“The culture at Brennan is exceptional, with colleagues always eager to offer support and efforts consistently recognised and appreciated.”

Security Engineer, Brennan Sri Lanka

“Working for Brennan means being at the forefront of technological innovation. We are fortunate to be part of a dynamic, collaborative and supportive team that truly values creativity and progress.”

Head of Operational Technology, Brennan Australia

“Brennan is a company that truly values its people. Its strong customer focus and integrated values create an environment where learning and growth are consistently encouraged. The people‑first policies foster belonging and inspire continuous improvement. Brennan is a place where efforts are recognised, and there are so many opportunities to thrive.”

Pradeep Musham

"Working at Brennan has been exceptional. Starting as an IT intern, I was guided through new challenges and given a wide range of learning opportunities. Making the experience even more remarkable is how women are welcomed and encouraged to thrive. A culture of inclusivity coupled with a growth‑oriented approach has made Brennan an ideal place to launch and develop my career."

“Brennan is a place I can grow, personally and professionally. The Women Rising program and leadership training have been amazing opportunities, and I really appreciate the supportive environment and positive culture within the business.”

Janet Rai

Global offices. Local colour.

With an international footprint, global ambitions and our deeply connected and collaborative teams, we’re making our mark on the world. We’re headquartered in Sydney, welcome talent from anywhere, and champion the vibrant local cultures wherever we have offices, with benefits and work values tailored to match.

Company divisions

Our Teams

Extraordinary people. Diverse teams. Shared purpose. Find your space and place at Brennan.

Genuine recognition? Too true.

Rewards. Recognition. Relaxation. We don’t just pay them lip service. They’re hardwired into our culture.

Awarded to our top performers, outstanding contributors, and those who truly live our values, Brennan’s Daredevils is our annual, all-expenses paid, overseas trip open to every team member in every Brennan office around the world.

From jetting off to San Francisco, sitting trackside at Singapore’s F1 weekend, or snowboarding in New Zealand (to namedrop just a few), Daredevils is how we show our true gratitude – and your chance to bask in well‑earned glory.

Company values

Real values that drive true performance

Technology never stands still. Neither do we. It’s why we foster a culture of collaboration and commitment, ownership and improvement to make our lives – and those of our clients – better than they were yesterday. Here’s how.

True opportunities, open now

Explore our open roles and join the team transforming business technology.

Senior Oracle Database Administrator

• IT & Telecomms
• DBA / Database Developer
• Sydney
• Permanent / Full Time

2/9/2026

• Be the Oracle expert for both the customer account and across Brennann capbility
• Influence and help build Brennan's Inhouse Oracle capability
• Hybrid role

Brennan. Where true performance thrives.

At Brennan, we believe that technology is delivered is every bit as important as the technology is. We focus on creating real and relevant value for customers with solutions that fit their specific needs and always reflect their true interests.

It’s a claim backed by our True Performance System – a way of working engineered to get us closer, and deliver better, for our customers and their actual experience of technology.

Why join Brennan

True performance for our customers starts with a true belief in our people. It’s why we’ve structured our business to help our teams, and their talents, shine bright. It's why we’ve created a workplace where people of all backgrounds, beliefs and experiences are welcomed and empowered. And it’s why we’ve built an organisation where real innovation makes a genuine impact and generates true rewards for our team members.

True rewards

In addition to competitive remuneration, Brennan offers extensive benefits, including:

• Training and certification bonuses
• Culture Awards that recognise excellence
• Brennan Daredevils – our annual, all-expenses paid trip awarded to our top performers and outstanding contributors
• Vibrant, fun social activities
• Discounted hardware and software

The role

The Senior Oracle Database Administrator role is based in Sydney and operates as a dedicated embedded resource supporting Client’s Oracle environment. The successful candidate will take ownership of day‑to‑day database operations and working independently to identify and resolve issues. Beyond this, the role will also contribute to building Brennan’s in‑house Oracle support capability.

You will be the trusted Oracle expert both for the dedicated customer account and across Brennan’s broader Oracle capability.

Your key responsibilities:

• Own day‑to‑day operational support and administration of the customer’s Oracle database estate, resolving incidents and service requests within agreed SLAs.
• Proactively monitor database health, capacity and performance to identify and resolve issues before they impact the customer.
• Administer and support Oracle Exadata environments, including patching, health checks and performance tuning.
• Manage and support Oracle databases hosted on Oracle Cloud Infrastructure (OCI) and Oracle on Azure, including provisioning, backup and recovery, and disaster recovery.
• Perform performance tuning, capacity planning and root‑cause analysis across production and non‑production environments.
• Manage database backup and recovery, patching, upgrades and security hardening.
• Maintain accurate documentation, runbooks and knowledge base articles.
• Participate in change, incident and problem management processes, and drive continuous improvement.
• Contribute to the ongoing development of Brennan’s in‑house Oracle support capability.

Key skills and experience required:

• 10+ years’ hands‑on experience as an Oracle DBA in enterprise environment.
• Demonstrated experience running and supporting Oracle databases on Oracle Cloud Infrastructure (OCI).
• Experience running Oracle databases on Azure (Oracle Database@Azure or Oracle on Azure VMs).
• Strong background in performance tuning, capacity planning and troubleshooting complex database issues.
• Solid experience with Oracle RAC, Data Guard, ASM, and RMAN backup and recovery.
• Proven ability to work independently as a dedicated resource for a customer with strong customer‑facing communication skills.
• Experience working within ITIL‑aligned incident, problem and change management processes.
• Oracle Certified Professional (OCP) or equivalent certification.

If you have the right experience and are looking for an opportunity to make a meaningful impact, this role offers the chance to become the trusted Oracle expert for a key client while helping Brennan build its in‑house Oracle capability.

Note:

As part of our hiring process, you will be required to undertake a National Criminal History Check.

Brennan is an equal opportunity employer.