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How to Become a Cryptographer: Australian Careers in Cyber Security

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What is a Cryptographer?

What will I do?

What skills do I need?

Resources

What is a Cryptographer?

A cryptographer designs and builds systems that keep digital data safe through encryption. They work in government agencies, banks, tech firms, and defence. The cyber security sector employed around 70,900 people in Australia as of August 2025 (Jobs and Skills Australia, 2025).

Day to day, cryptographers write code and build methods to encode data. Only people with the right key can read it. They also test current systems to find and fix weak spots before attackers do.

Cryptographers work closely with software engineers and security teams. They help add encryption to apps, databases, and comms platforms. Their work protects online banking, health records, and government comms.

To enter this career, you need strong skills in maths and computer science. Most cryptographers hold a bachelor degree or higher. Roles exist in government, finance, health, and tech. Cyber security jobs are set to grow 14.2% by 2029 (Jobs and Skills Australia, 2025).

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Career snapshots For Cryptographers

Cryptographers work in one of Australia’s fastest-growing sectors. The broader ICT security group employed around 70,900 people in Australia as of August 2025. That is up by 3,300 over the year before (Jobs and Skills Australia, 2025). Jobs in this group are set to grow 14.2% between May 2024 and 2029. That is more than double the national average of 6.6%.

Most cryptographers work full-time, around 38 to 40 hours a week. Busy periods can need extra hours. Most roles are permanent, based in government, finance, and tech services. Key employers include the Australian Signals Directorate, the Reserve Bank of Australia, and the major banks.

Average salary for people with IT cryptography skills is around $85,000 per year (PayScale, 2024). Senior and government roles often pay more. The sector has a low rate of joblessness, showing strong and steady demand for cyber security skills.

What will I do?

A cryptographer’s work blends deep maths research with hands-on coding. They build and test the systems that guard data for governments, banks, and tech firms. Most days mix algorithm design, code review, and security checks.

  • Design encryption methods to secure data in transit and at rest.
  • Check current security systems to find and fix weak spots.
  • Write and review code that runs security protocols.
  • Test new encryption tools against known attack methods.
  • Work with software engineers to add security to apps and platforms.
  • Keep up with post-quantum cryptography research and new threats.
  • Record methods, protocols, and security checks for audit use.
  • Guide teams on best practice for protecting sensitive data.

What skills do I need?

Cryptography draws on a rare mix of maths depth and software skill. A strong base in number theory, abstract algebra, and probability is the core technical need. The Australian Signals Directorate lists these as key skills for cryptographic analysts (ASD, 2025).

Beyond the maths, cryptographers need solid coding ability. Python, C++, and Java are the most common languages used. Sharp thinking helps them spot weak spots that others miss. Good written and verbal comms also matter. Cryptographers often explain complex ideas to non-technical colleagues.

Skills/attributes

  • Advanced knowledge of number theory and abstract algebra
  • Proficiency in Python, C++, or Java
  • Understanding of cryptographic algorithms and protocols
  • Knowledge of cybersecurity principles and threat modelling
  • Analytical thinking and systematic problem-solving
  • Attention to detail
  • Ability to work under pressure and meet deadlines
  • Clear written and verbal communication
  • Familiarity with data structures and algorithms
  • Knowledge of network security and protocols
  • Research and literature review skills
  • Teamwork and collaboration with cross-functional teams
  • Commitment to continuous learning

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About the author

Laura Atkinson

Laura Atkinson

Laura Atkinson is an Account Management and SEM specialist at Course Finder Group with six years' experience in the Australian education sector. She works day to day with universities, TAFEs and independent training providers, which gives her a close view of how courses map to real career outcomes. She writes practical guidance on career pathways, choosing the right qualification and what to expect when moving into a new field.