About the Client Our client is a high-profile Australian Government organisation responsible for protecting Australia’s national interests against sophisticated global and cyber threats. Operating within a highly secure and technically complex workplace, the organisation delivers critical intelligence, cyber security and security capabilities that support the Australian Government. This is an opportunity to contribute to nationally significant work while collaborating with experienced cyber security, architecture, infrastructure, cloud and engineering professionals.

About the Role The Lead Cryptographic Security Engineer will provide specialist technical leadership across the design, implementation, integration, assurance and operation of an enterprise-scale Key Management System capability. Operating at SFIA Level 5, you will independently provide technical advice and support the delivery of resilient, compliant and secure cryptographic services across complex, multi-classified technology environments.

Key responsibilities will include:

Designing, deploying and configuring enterprise key management infrastructure and cryptographic services

Managing cryptographic key lifecycles, including generation, storage, rotation, archival, recovery and destruction

Configuring and supporting Key Management Systems and Hardware Security Modules

Integrating cryptographic capabilities with enterprise platforms, applications and infrastructure

Implementing secure API-based integrations and encryption services across cloud, hybrid and on-premises environments

Supporting Public Key Infrastructure, certificate management and machine identity services

Conducting technical risk assessments, security assurance and cryptographic solution validation

Identifying and remediating cryptographic vulnerabilities and security weaknesses





Supporting security accreditation, compliance, audit and design assurance activities

Developing engineering standards, operational procedures, runbooks and technical documentation

Monitoring the availability, resilience and performance of enterprise cryptographic services

Providing specialist advice to technical, operational, project and senior stakeholder groups

The Successful Candidate The successful candidate will be an experienced security or cryptographic systems engineer with the ability to operate independently and provide authoritative specialist advice within complex, secure or classified ICT environments.

You will bring demonstrated experience in:

Designing, implementing and supporting cryptographic solutions in complex enterprise or classified environments

Applying contemporary cryptographic principles, protocols and standards

Public Key Infrastructure design, management and lifecycle operations

Enterprise Key Management Systems and Hardware Security Modules

Secure communications, encryption technologies and key distribution mechanisms

Cryptographic assurance, validation, threat modelling and risk assessment

Security architecture and the integration of cryptographic controls

Delivering security outcomes within Commonwealth, Defence, national security or similarly regulated environments

Supporting system accreditation, certification, compliance or assurance activities





Communicating complex cryptographic concepts to technical and non-technical stakeholders

Managing competing priorities and delivering high-quality outcomes within agreed timeframes

Highly regarded experience and qualifications include:

A degree in cyber security, computer science, information security, engineering, mathematics or a related discipline

CISSP, CISM, CCSP or comparable industry certifications

Cryptographic security, encryption, cloud security, KMS or HSM certifications

Familiarity with the Information Security Manual, Protective Security Policy Framework and Essential Eight

Experience with Secure-by-Design and Zero Trust principles

Cloud cryptography experience across Azure, AWS or other government-approved platforms

Exposure to quantum-resistant cryptography, transition planning or emerging cryptographic standards

Candidates must also be willing to undergo an Organisational Suitability Assessment (OSA) prior to engagement.

Location: The role is based in Canberra ACT.

Contract terms: 12 months from commencement date, plus 2x 12 month extensions

Experience Level: Senior – EL1 Equivalent

Security Requirements: Candidates must hold an active or reactivatable Top Secret Positive Vetting (TSPV) Security Clearance on submission. Our client is not looking to upgrade an existing clearance for this position. An OSA (Organisational Suitability Assessment) will be required for this position.

Candidates will need to be willing to undergo pre-employment screening checks which may include, ID and work rights, security clearance verification and any other client requested checks.

Applications open until

8am 06 October 2026 .

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📌 Lead Cryptography Security Engineer (Canberra)
🏢 Whizdom
📍 Canberra