ICT / Security Architect

1 week ago

Canberra ACT, Australia Calexi Full time $140,000 - $180,000 per year

About Calexi

Calexi is a veteran-owned Canberra consultancy delivering cyber security, ICT engineering, and systems integration for Defence, government, and critical infrastructure. We operate where trust matters most, providing clarity, precision, and focus in high-assurance environments.

Role Overview

We are seeking an experienced ICT / Security Architect to lead the design, specification, and governance of secure ICT systems and solutions. You will work on mission-critical projects, collaborating with engineering, security, cloud, and operations teams to ensure systems are secure, scalable, compliant, and aligned to Defence and government requirements.

Key Responsibilities

  • Develop and maintain architecture blueprints for secure ICT systems.
  • Define and enforce security architecture standards including secure by design, threat modelling, and compliance with ISM, PSPF, IRAP, ISO 27001, and Essential Eight.
  • Collaborate with engineers, DevOps, operations, and governance teams to ensure designs are practical and maintainable.
  • Review and approve solution designs, infrastructure changes, and cloud implementations.
  • Ensure alignment of architecture across systems, networks, identity and access, monitoring, and disaster recovery.
  • Support accreditation, compliance documentation, and audits.
  • Mentor technical staff and promote best practice in secure architecture.

Skills and Experience

  • Strong background in ICT or enterprise security architecture in government or regulated sectors.
  • In-depth knowledge of security frameworks such as ISM, PSPF, IRAP PROTECTED, ISO 27001, and Essential Eight.
  • Experience designing hybrid and cloud architectures (Azure or AWS).
  • Proficiency in identity services, network security, and secure connectivity.
  • Experience in risk assessment, secure design reviews, and system hardening.
  • Excellent communication skills and ability to work across technical and leadership teams.
  • Australian Citizenship with an active security clearance (NV1 minimum, NV2 or TSPV highly desirable).

What Calexi Offers

  • Competitive salary package with superannuation and benefits.
  • Opportunities to work on national security and Defence programs.
  • Professional growth through mentoring, training, and certifications.
  • A supportive workplace culture with flexibility where possible.
  • A company that values veterans, diversity, and inclusion.

Veteran Employment Commitment

Calexi is proud to support the Veteran Employment Commitment. We actively recruit and retain veterans and reservists, recognising the leadership, adaptability, and technical expertise they bring. We provide mentoring, career development, flexibility for reservist duties, and leave for commemorative events. We strongly encourage applications from ex-serving personnel and Defence families.

Job Type: Full-time

Pay: $140,000.00 – $180,000.00 per year

Benefits:

  • Professional development assistance

Application Question(s):

  • Do you hold a current Australian NV1 or higher security Clearance?

Experience:

  • System architecture: 4 years (Preferred)

Work Authorisation:

  • Australia (Required)

Location:

  • Canberra ACT 2600 (Required)

Work Location: In person

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