Senior Detection and Response Engineer

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Date: 11 Jan 2026

Location: Macquarie Park, Australia

Company: Singtel Group

Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband, and digital solutions.
At Optus, our purpose is to power optimism with options.  To lead and live our purpose, we are looking for positive, customer centric, innovative and aspirational leadership. Reporting to the Director, Detection and Response, the Senior Detection and Response Engineer  is a critical position that will enable Optus to realise its vision of becoming Australia’s most loved everyday brand with lasting customer relationships.

 

What You’ll Do

This key role is responsible for Delivery of the DART Cyber Security transformation and strategy, acting as the representative to Cyber Defence LT members for on-going engagement on the organisational threat profile. You’ll be responsible for:

  • The evolution of the Optus detection and response (DART) capability, including threat hunting, purple teaming, detection engineering, cyber incident management, threat intelligence and on-going development of the supporting people, process, and technologies;
  • Helping to shape the Optus Cyber Threat detection capability, integrating tightly with the broader Cyber defence function;
  • Driving the continued evolution of the Defensive Cyber Security capability, including participating in planning and development of supporting business cases for further investment;
  • Managing Cyber Security incident response activities, including developing strategies to contain and rapidly resolve incidents;
  • Instilling and fostering a culture of excellence, integrity, and professionalism; one that works toward the highest standards in cyber security.

 

This role collaborates and respectively challenges the formation and execution of the business-critical strategic cyber defence initiatives, shows strong technical stewardship, influencing where necessary to ensure mutually beneficial outcomes. It is also expected that this role will ensure:

  • Independent assurance and recommendations are provided;
  • High degree of quality and level of comfort that strategic initiatives will be technically executed as intended, without bias; and
  • Willingness to challenge stakeholders on how best to meet these expectations.

 

This is a fast-paced place with lots happening and we’re looking for someone comfortable operating independently, influencing the right outcomes for the team, the organisation, and our customers.

What You’ll Bring

  • Tertiary qualifications computer science, information systems, engineering, cyber security or other relevant disciplines, especially Threat hunting, incident management, detection engineering and CI/CD
  • 5+ years of relevant experience in cyber security risk management, transformation and/or strategic roles.
  • Extensive experience managing complex, projects, and dealing with ambiguous situations.
  • Deep understanding of malware families/evolution, indicators (pyramid of pain), TTPs (tools, tactics/techniques, procedures) used by cyber adversaries and how to apply effectively to help inform key stakeholders of attack chains & exploits while also building threat assessments for organizational cyber adversaries and their probability/intent to attack.
  • Expert knowledge of cyber threat landscape - (state / geopolitical, cybercrime, hacktivism, insider risks, etc.).
  • Proven subject matter expertise in relevant areas, including threat intelligence, detection engineering, incident management, and forensics.
  • Strong understanding of python, automation and engineering deployment pipelines.
  • Advanced problem solving and conflict management skills.
  • Understanding of both technical project framing and execution, plus people change management necessities.
  • Ability to work autonomously and proactively make decisions.
  • Technical coaching ability with a track record in delivering strong engineering focused solutions.
  • A self-starter with an ability to adapt to a dynamic, ever-changing and ambiguous environment.
  • Strong interpersonal, communication and influencing skills with the ability to work with stakeholders across different functions, with colleagues at all levels, and with partners.
  • Demonstrated ability work well under pressure, meet deadlines and adapt easily to frequent change.

 

 

The Good Stuff...

  • Competitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and unique shopping discounts with our retail partners.
  • Flexible working arrangements with opportunities to work three days in the office, two days remote or home.
  • Vibrant and collaborative office campus that includes cafes, convenience store, chill out zones, GP, post office, gym and on-site childcare centre.
  • Competitive leave policies, including additional 'Connected’ days to focus on culture, family, health, community, or whatever’s important to you.
  • We support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks.
  • Direct your own development and build future-ready skills with Optus U’s industry-focused micro-credentials, developed with La Trobe and Macquarie Universities.
  • Build meaningful connections through employee-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network and Express Yourself (LGBTQIA+).
  • Put your wellbeing first with free access to counselling and support services, 24/7 — in-person, by phone, SMS, or video.

At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences. We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander. We also want to do our best to make our recruitment process inclusive. If you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email AccessibleRecruitment@optus.com.au or call 1800 309 170. We're here to help. When you contact us, please advise your preferred method of contact and we will be in touch within 48 hours.

For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity