Head of Operational Security Engineering & Resilience

Singtel Group; Sydney; Hybrid; AUD 250,000 - 360,000; Full time

Benefits offered by this job

Competitive remuneration and employee/

Flexible working arrangements (3 days@

Parental leave and family support

Uplift programs with tertiary partners

Job summary

Optus is seeking a Senior Director of Operational Security Engineering to lead cross-domain security engineering for Network Operations, AI-driven services, and security-by-design programs.

You will translate cyber risks into security initiatives, embed assurance frameworks, and drive security automation across critical platforms. The role requires executive leadership and a track record in large-scale security transformations across telecoms and technology environments.

Qualifications

• Executive leadership experience across telecommunications, cyber security and large technology environments.
• Proven ability to lead enterprise operational security engineering, cyber resilience and security transformation capabilities.
• Strong understanding of Zero Trust, identity and privileged access, cloud and AI security.

Responsibilities

• Lead the Operational Security Engineering strategy, capability roadmap and maturity uplift across Network Operations.
• Define and embed secure-by-design standards, operating models and assurance frameworks across network, data, AI, automation and OSS environments.
• Translate cyber risks and business priorities into a portfolio of security engineering, resilience and assurance initiatives.
• Drive the integration of security controls and Zero Trust principles across network, cloud, AI, automation and operational platforms.
• Lead the development of automated security detection, orchestration, response and containment capabilities to reduce risk and minimise business impact.
• Establish operational security assurance, control validation and resilience programs, ensuring capabilities remain secure, recoverable and production-ready.
• Oversee governance, risk reporting, performance metrics and continuous improvement activities, prioritising efforts based on threat intelligence and operational outcomes.
• Provide executive leadership and strategic advice on cyber risk and security posture while building a high-performing security engineering capability and fostering a security-by-design culture.

Skills

Executive leadership

Cyber risk

Zero Trust

Security architecture

Cross-domain coordination

Job description

Optus is seeking a Senior Director of Operational Security Engineering to lead cross-domain security engineering for Network Operations, AI-driven services, and security-by-design programs.

You will translate cyber risks into security initiatives, embed assurance frameworks, and drive security automation across critical platforms. The role requires executive leadership and a track record in large-scale security transformations across telecoms and technology environments.