Leidos

Senior Security Architect

Leidos

full-time

Posted on:

Location Type: Office

Location: Scoresby • 🇦🇺 Australia

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Job Level

Senior

Tech Stack

AWSAzureCloudCyber SecurityFirewalls

About the role

  • Design and maintain secure architecture frameworks across cloud, infrastructure, and applications, ensuring alignment with business and security needs.
  • Lead and support GRC activities including policy creation, risk assessments, and audits aligned with standards like ISO 27001, NIST, CPS 234, ISM, PSPF, and DSPF.
  • Collaborate with internal and external stakeholders to define and deliver tailored security controls, risk assessments, and testing strategies.
  • Develop comprehensive accreditation plans and author key security documents such as SSP, SRMP, IRP, CMP, and BIL for assigned projects.
  • Architect and manage security tools (e.g., SIEM, IAM), support secure development practices, and participate in incident response, threat detection, and vulnerability management.

Requirements

  • Proven background in cybersecurity roles covering architecture, GRC, and engineering functions.
  • Strong knowledge of security technologies (e.g., firewalls, SIEM, IAM), cloud platforms (AWS/Azure), and secure network design.
  • Familiarity with threat modelling (e.g., MITRE ATT&CK) and regulatory frameworks like ISO 27001, NIST, CPS 234, GDPR, PSPF, ISM, and DSPF.
  • Relevant certifications such as CISSP, CISM, CRISC, SABSA, or AWS/Azure Security Specialty (IRAP not required).
  • Current experience with Australian Government security frameworks (PSPF, ISM) is essential; DSPF experience is preferred.
  • Don’t worry if you don’t tick all the boxes – if you meet most of them, we encourage you to submit your application. We’re most interested in your strengths, what you want to learn and how far you want to go.
Benefits
  • Life Days are the Leidos way of recognising that we all need extra time to take care of life. By working slightly more than the minimum weekly hours (2 hours per week for full-timers), you can accrue up to 12 days of leave per year.
  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
cybersecurityarchitectureGRCrisk assessmentssecure development practicesthreat detectionvulnerability managementthreat modellingsecure network design
Soft skills
collaborationleadershipcommunication
Certifications
CISSPCISMCRISCSABSAAWS Security SpecialtyAzure Security Specialty