What the job is

This is a Cryptography Engineer position at Araxi Group, located in Bramley, Gauteng. The role focuses on designing and implementing secure cryptographic solutions for payment and financial services. You will work on systems that protect millions of transactions daily, combining cryptography, payment security, and backend engineering.

What you will do

You will design and develop cryptographic services and secure backend solutions. You will integrate applications with enterprise HSMs and cryptographic infrastructure. You will implement key management and key lifecycle processes. You will work with payment cryptography technologies such as PIN Blocks, DUKPT, CVV/CVC, PVV, and EMV. You will also implement industry standards like TR-31 and TR-34, investigate security incidents, and collaborate with clients on integration projects.

What you need

You need a strong understanding of symmetric and asymmetric cryptography, including AES, RSA, ECC, hashing, HMAC, and key derivation. Experience with payment HSMs, TR-31, TR-34, PIN block formats, DUKPT, and EMV cryptography is required. Proficiency in programming languages like TypeScript, Java, Go, C/C++, or Python is essential. A Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related field, along with at least 2 years of professional experience in software engineering or cryptography, is required.

What you will get

You will work on mission-critical payment and security systems, solving complex technical challenges. You will collaborate with experts in cryptography and fintech, gaining exposure to cutting-edge security technologies. There are opportunities for professional growth and research in a fast-growing, security-focused environment.