Cyber Security Engineer

Title: Cyber Security Engineer

Reports to: Managing Director

Location: Canberra-based, primarily embedded on client sites with minimal travel.

Clearance: Minimum NV1 security clearance required; NV2 or higher preferred for some Defence engagements.

About Calexi

There comes a time in every campaign when the dust settles, the noise fades, and you look around to see who is still beside you. That is when you know who you are fighting with and what you are fighting for.

At Calexi, we know that feeling well. We have stood shoulder to shoulder in the toughest places where trust is earned, not issued and where the margin for error is measured in more than numbers. We are a team built from those moments: people who refuse to quit, who steady their hands when the work gets hard, and who take pride in leaving things better than they found them.

We are more than a consultancy. Yes, we solve complex problems for Defence, government, and industry, but we also build. We design, test, and create tools and technologies that strengthen the systems our nation relies on. Our products are shaped by the same curiosity and craftsmanship that define our people: practical, precise, and built to serve something larger than ourselves.

What unites us is not just what we do; it's why we do it. We believe in service without ego, in the power of knowledge shared, and in the quiet confidence that comes from mastering your craft.

This is Calexi; forged in purpose, driven by integrity, united by the belief that together we can build a safer, smarter, better world.

Purpose of the Role

The purpose of this role is to design, implement, and operate secure systems and environments that protect Calexi's Defence and government clients from hostile threats.

You will work directly with customers to resolve complex cyber problems, applying secure-by-design principles to deliver mission-ready outcomes.

This is a hands-on technical role that demands strong stakeholder engagement skills and the ability to mentor junior APS or consultant staff.

You will operate in high-trust environments to deliver secure systems and measurable client outcomes, ensuring technical excellence and strong working relationships. Success in this role is defined by secure, resilient systems delivered on time and positive client feedback that reflects Calexi's commitment to mission success.

Veteran Commitment:

Calexi proudly supports Australia's veteran community. We recognise the unique leadership, resilience, and mission-focused mindset that veterans bring to our teams. We actively welcome applications from veterans, reservists, and Defence partners seeking meaningful roles in secure ICT, cyber, and engineering domains.

Key Responsibilities

• Design, implement, and maintain secure systems across Windows, Linux, and mixed network environments.
• Conduct system hardening, patching, and operational assurance activities to protect against hostile threats.
• Review configurations and architectures against ISM, PSPF, and DSPF standards.
• Identify and resolve security incidents, ensuring risks are documented and remediated.
• Collaborate closely with client technical and management stakeholders to deliver mission outcomes.
• Deliver and assure secure ICT systems aligned with ITIL, Agile, SAFe, and risk-based approaches.
• Apply systems engineering principles where appropriate to guide design and implementation.
• Communicate effectively with clients, demonstrating initiative, adaptability, and problem-solving in complex environments.
• Maintain focus on client satisfaction and security outcomes, ensuring all deliverables meet or exceed expectations.
• Provide guidance and mentoring to junior APS or consultant staff, supporting capability uplift.
• Contribute to technical documentation, risk assessments, and continuous improvement of security practices.

Level Differentiation

Junior Consultant (Position -1):

• Scope: Owns work packages; leads small teams (1–2 staff).
• Autonomy/ Leadership: Medium – responsible for deliverables.
• Key Outcomes: Timely delivery, positive client feedback.

Consultant(This Position):

• Scope: Independent technical lead; manages workstreams.
• Autonomy/ Leadership: Medium-High – influences design and execution.
• Key Outcomes: High-quality outputs, contributes to business growth.

Senior Consultant (Position +1):

• Scope: Subject-matter expert; leads multiple streams and mentors others.
• Autonomy/ Leadership: High – guides direction, minimal oversight.
• Key Outcomes: Innovative solutions, thought leadership.

Key Relationships

• Internal: Managing Director, Technical Leads, and Calexi project teams.
• External: Client stakeholders within Defence and government agencies, typically working within small, multi-disciplinary teams of 2–6 specialists on-site.

Qualifications & Experience

• Bachelor's degree in ICT, Engineering, or Cyber Security (or equivalent Defence experience).
• Minimum 5-8 years of professional experience in cyber or ICT engineering roles.
• Proficiency in Windows and Linux administration, network security, and operational security practices.
• Familiarity with ISM, PSPF, and DSPF compliance frameworks.
• Experience with common enterprise security tools and platforms.
• Professional certifications such as CISSP, GCIA, or equivalent are highly regarded.
• Systems engineering experience or exposure to structured delivery frameworks is an advantage.

Performance Indicators

• Secure systems delivered to specification and compliance standards.
• High client satisfaction and positive feedback.
• Effective collaboration and communication with client and internal teams.
• Continuous learning and professional development aligned with Calexi's growth culture.

Work Level Standards & Conditions

• Salary range: $130,000 – $160,000 + superannuation, depending on skills, experience, and clearance level.
• Includes an annual professional training allowance to support ongoing development and certification.
• Flexible work arrangements may be available subject to client security and site requirements.
• Participation in training and continuous improvement programs encouraged.
• Calexi provides flexibility for Defence Reserve service, family responsibilities, and professional study.
• Opportunities exist for advancement to Senior Consultant and beyond within 2–3 years, subject to performance and client outcomes.

Culture & Belonging

At Calexi, you'll find people who have your back; who push you to grow, trust you to lead, and celebrate your wins as their own.

We look after each other because we know what it takes to stand the line together; and because we know the mission isn't only out there in the field, the code, or the policy. It lives in how we show up for one another every day.

Welcome home. Take pride in what you've built and lift your eyes to what comes next. There's still work to be done, and the world needs what we're creating.

Apply here or visit to learn more about our mission-ready team.