Security Engineer Internship

About the role

Join Cornerstone’s security team to help keep digital payments safe across Africa. You will work on real‑world systems, testing for vulnerabilities and promoting a security‑first mindset throughout the platform.

Key responsibilities

• Conduct security assessments and penetration testing on web applications and infrastructure.
• Monitor systems for threats, anomalies and respond to security incidents.
• Review code and infrastructure for security risks and implement controls.
• Help shape security policies and contribute to a culture of proactive security.

Required profile

• Understanding of web application security fundamentals and OWASP Top 10.
• Familiarity with Linux environments and basic networking concepts.
• Interest in cloud security (AWS or GCP) and fintech/payment security.

Required skills

• Penetration testing
• OWASP Top 10 knowledge
• Linux
• Networking concepts
• AWS
• GCP

What we offer

• Hands‑on experience building systems that power digital payments.
• Mentorship from experienced engineers and startup founders.
• Flexible remote work environment with collaborative culture.
• Letter of recommendation and possible full‑time role after successful completion.