International Association
for Cryptologic Research

ExeQuantum is a Melbourne-based company pioneering post-quantum cryptography (PQC) and sovereign-grade secure systems. We are working with critical industries and governments to deliver solutions that are sovereign, transparent, agile, and compliant. Our projects range from PQC-as-a-Service APIs to secure integrations in finance, healthcare, and national infrastructure.

We are looking for a Software Engineer to join our engineering team. This role reports directly to the CTO and will involve building prototypes into production-ready solutions across cryptography, email security, and payment infrastructure. This is not a generic coding role. You will be working on systems where discipline, confidentiality, and creativity matter as much as technical skill.

• Design, develop, and maintain secure software components (Python, Node.js, C/C++/Rust depending on project scope).
• Integrate PQC algorithms (ML-KEM, ML-DSA, HQC, FN-DSA, etc.) into real-world applications.
• Contribute to internal tools, SDKs, APIs, and add-ins (e.g., Outlook, payment gateways).
• Collaborate with the CTO on system design and architecture.
• Follow strict security and confidentiality practices.
• Participate in code reviews, testing, and documentation to ensure auditability and compliance.

• Open-mindedness and willingness to study cutting-edge technologies. Demonstrated ability to think outside the box and avoid “impossible” as a default answer.
• 3+ years of professional software development experience (startup or high-assurance sector preferred).
• Strong skills in at least one of: Python, Node.js/TypeScript, C/C++/Rust.
• Familiarity with cryptographic libraries, secure coding practices, or networking protocols is a plus.
• Comfort working with prototypes, debugging, and delivering solutions in ambiguous/problem-solving contexts.
• High standard of confidentiality and discipline in handling IP, code, and client data.