Offensive Security Tester
Confirmed on the employer's own hiring board on Oct 12, 2026. First seen by Alion on Oct 9, 2026. NBN Co scores B on the Alion truth index.
Job Expectations
Build your career and Australia’s future.
Not many people can say they are working on building Australia’s future. With us you’ll be doing just that, leaving a legacy for all Australians. Plus, there’s equal employment, great training, and true flexible working arrangements.
A fantastic opportunity has presented itself for an Offensive Security Tester reporting to Manager Ethical Hacking
A bit about your role
This role is responsible for delivering offensive security and technical assurance activities that strengthen nbn’s cyber security posture through penetration testing, threat simulation, red and purple team engagements, and security assessments across a range of technologies and environments. The successful candidate will work collaboratively with internal stakeholders, vendors, and technical teams to plan, execute, and communicate testing outcomes, providing clear, actionable insights to both technical and non-technical audiences. The role requires strong analytical, communication, and stakeholder engagement skills, along with a commitment to continuous learning, adaptability, and professional development. It also contributes to team capability growth through coaching, mentoring, and knowledge sharing with interns and graduate testers.
A bit about you
The ideal candidate will bring strong expertise in offensive security, penetration testing, and security assurance within complex enterprise environments. They will have the ability to plan, execute, and communicate technical security assessments to a range of stakeholders, while balancing multiple priorities and delivering high-quality outcomes. The role requires strong analytical thinking, problem-solving, stakeholder engagement, and communication skills, along with experience in security frameworks, testing methodologies, automation, and emerging technologies. The candidate at a minimum will have industry recognised offensive security certifications from Offsec, HTB or SANS. The successful candidate will be collaborative, adaptable, and committed to continuous learning, with the ability to mentor others, build strong relationships, navigate ambiguity, and contribute to a positive and inclusive team culture.
Application Process
You may find that your experience does not match every requirement listed but, if this role has piqued your interest or resonates with where you are in your career, we encourage you to apply rather than self-select out. We are interested in transferable skills and your skills and perspective could be exactly what we would value to strengthen our team.
Life at nbn
To be part of nbn is to be part of something bigger. There’s so much more from here. Our pioneering spirit drives us forward every day. Together, we help lift the digital capability of the nation by building and connecting Australia’s best fibre infrastructure into homes and businesses, plus places and things, everywhere. We’re continuing to create Australia’s network-a network made for more. Not just a way for everyone to do the things they love but transforming the way they do them.
A more inclusive working world
nbn is committed to an inclusive, flexible, and supportive workplace where everyone can feel heard, valued, and respected. We believe diverse perspectives are the key to unlocking greater outcomes and encourage applications from people of all ages, nationalities, abilities, and cultures. That's why we have a Reconciliation Action Plan, Accessibility & Inclusion Plan, offer 18 weeks of paid parental leave, are a Pride in Diversity Platinum Employer, and have active employee-led diversity pillars. Click here to see our list of employee benefits and why we're recognised as a WORK180 Endorsed Employer for Women.
Equal Opportunities for All
We champion equal opportunities for all employees. If you have any accessibility requirements and would like to discuss adjustments for the recruitment process, please don’t hesitate to contact us by emailing [email protected] or calling our Recruitment Accessibility Enquiry Line at +61 2 8918 9990. Please note, this line is dedicated to accessibility-related enquiries for the purposes of recruitment, and only enquiries related to accessibility adjustments will be answered. For other matters, please visit our Contact Us page on our website.
Please note that this role is a permanent opportunity and applications will close at midnight on Friday, 23rdOctober.
To be eligible for this role, you must have full working rights in Australia.