Senior Cybersecurity Engineer

Senior Cybersecurity Engineer

ESDIAC Telco & Technology

Lagos, Nigeria · Full-time · On-site

ESDIAC Telco & Technology is hiring a hands-on Senior Cybersecurity Engineer to lead the technical work that protects Esdiac Call, Esdiac Data, Esdiac Pay, and Esdiac for Business. You’ll set security priorities across our cloud infrastructure, mobile apps, APIs, and telecom services, and work with engineering and operations to put those priorities into practice.

What you’ll do

• Lead security architecture reviews and threat modeling for new products, integrations, and major releases..
• Design and implement controls for cloud access, network segmentation, secrets management, endpoint protection, and security monitoring..

• Lead technical incident response from investigation and containment through recovery and follow-up. Maintain and test incident response playbooks..
• Own vulnerability management. Prioritize findings by exploitability and business impact, assign remediation owners, and verify fixes..

• Build security checks into CI/CD pipelines and define release criteria for critical findings..
• Partner with product and operations teams to detect and mitigate account takeover, VoIP toll fraud, eSIM provisioning abuse, and payments-related threats..

• Mentor engineers on secure design and development. Give leadership clear updates on material risks and remediation progress..

What you’ll bring

• At least 5 years of hands-on cybersecurity experience, including ownership of security initiatives or technical leadership during incident response..
• Experience securing production workloads on AWS or another major cloud platform, including identity and access management, network controls, and logging..

• Strong knowledge of Linux, networking, application and API security, and vulnerability management..
• Experience investigating incidents using centralized logging, SIEM, or endpoint detection tools..

• Experience integrating security controls into CI/CD pipelines and automating tasks with Python, Bash, or a similar language..
• Ability to explain security risks and trade-offs to engineers, product teams, and executives..

Nice to have

• Security experience in telecommunications, VoIP/SIP, eSIM, fintech, or payments..
• Experience with mobile application security, penetration testing, or incident response exercises..

• Familiarity with ISO 27001, PCI DSS, or the Nigeria Data Protection Act..
• Relevant certifications such as CISSP, CCSP, OSCP, or AWS Certified Security – Specialty..

How to apply

Email your CV to Info@esdiac.com and copy Juliana@esdiac.com. Use Senior Cybersecurity Engineer – Lagos as the subject line.

Include a brief example of a security incident you led or a security control you designed. Describe your role and the outcome.

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