What this life looks like
You protect secrets. Cryptographers design the mathematical systems that secure digital communications, protect financial transactions, safeguard private data, and underpin the trust that makes the modern internet function. As Africa's digital economy grows, the demand for cryptographic expertise is rising rapidly.
What she actually does
You develop and analyse cryptographic algorithms and protocols, evaluate the security of existing cryptographic systems, implement encryption in software and hardware, work on public key infrastructure (PKI) systems, contribute to blockchain and cryptocurrency security, advise organisations on cryptographic security policies, and stay ahead of emerging threats including quantum computing attacks on classical cryptography.
Where you can work
| Sector | Places in Africa |
|---|---|
| Banks & Fintech | Flutterwave, Paystack, Standard Bank — payment security and mobile money encryption |
| Government | National cybersecurity agencies, NITDA Nigeria, ICASA South Africa — digital identity systems |
| Tech Companies | Software security teams at African and global technology companies |
| Blockchain & DeFi | Yellow Card Financial, Binance Africa, cryptocurrency and DeFi platforms based in Africa |
Why it matters in Africa
Africa's booming fintech sector — processing billions of mobile money transactions annually — depends on cryptography to keep those transactions secure. African governments are digitising identity, land, and health record systems that require strong cryptographic protection. As cyber threats grow, cryptographic expertise is becoming a strategic national security asset.
Your pathway in
- Excel in Mathematics — particularly number theory, algebra, and probability — at school and university
- Study Mathematics, Computer Science, or Electrical Engineering at university
- Develop strong programming skills, particularly in C, Python, and mathematics-heavy languages
- Study cryptographic theory through free resources and advanced courses such as Dan Boneh's free Coursera course
- Consider postgraduate research in cryptography or information security
Skills you will need
- Number theory and abstract algebra
- Cryptographic algorithm design
- Programming (C, Python)
- Security protocol analysis
- Knowledge of PKI and TLS
- Quantum cryptography awareness
A woman in this field
Dr. Riham AlTawy
Egypt
Dr. AlTawy is a distinguished cryptographer and an Associate Professor at the University of Victoria. She is a leading voice in the international cryptographic community, specializing in the design and analysis of symmetric-key primitives and their applications in modern digital infrastructures. She earned her PhD from Concordia University (Canada) under the supervision of world-renowned cryptographer Dr. Amr Youssef. Her academic foundation is deeply rooted in the rigorous mathematical design of secure systems.
Take your first step
- Excel in Mathematics at school, particularly in number theory and logic
- Study the basics of cryptography through the free Cryptography course by Dan Boneh on Coursera at coursera.org
- Learn Python and implement basic cryptographic algorithms such as Caesar cipher and RSA from scratch
- Follow the African Cybersecurity community and explore CyberSafe Foundation at cybersafefoundation.org