Network Security Engineer

AI summary

A leading Nigerian insurance group seeks an experienced Network Security Engineer to protect enterprise networks, detect and respond to cyber threats, and strengthen technology infrastructure resilience. The role is full-time based in Lagos and reports to the Head of IT/IT Infrastructure.

• Full-time role with a leading Nigerian insurance group in Lagos
• Reports to Head, Information Technology / IT Infrastructure
• Focus on network security, threat detection, and incident response
• Involves firewalls, VPNs, IDS/IPS, and vulnerability management
• Requires collaboration with IT, risk, and application teams

Original source description

Network Security Engineer in a Leading Nigerian Insurance Group - Estrada International Staffing Solution ⏲ Aug 17, 2026, 8:14 AM ⋕ View all Cybersecurity & Networking jobs Estrada International Staffing Solution - Our client is a leading Nigerian insurance group offering a diverse range of life, general, and specialist insurance solutions to individuals and businesses. The organization is committed to delivering secure, reliable, and technology-enabled services while maintaining strong operational standards, regulatory compliance, and sustainable business growth. They are recruiting to fill the position below: Job Title: Network Security Engineer Location: Lagos, Nigeria Employment Type: Full-time Industry: Insurance | Financial Services Reports To: Head, Information Technology / IT Infrastructure Role Summary The role will be responsible for protecting enterprise networks, identifying and mitigating cyber threats, implementing security controls, and ensuring secure connectivity across business operations. The successful candidate will work closely with IT, infrastructure, application, and risk teams to proactively identify vulnerabilities, respond to security incidents, and continuously improve the organization's network security posture. We are seeking an experienced Network Security Engineer to strengthen the security, availability, and resilience of its technology infrastructure. Key Responsibilities: Network Security & Infrastructure Protection: Implement network segmentation and access controls to protect critical systems and sensitive business information. Design, implement, and maintain secure network architectures across the organization's technology environment. Monitor network traffic and security events to identify unauthorized access, suspicious activities, and potential cyber threats. Configure and manage firewalls, VPNs, intrusion detection/prevention systems, network access controls, and other security technologies. Conduct regular reviews of network security configurations and recommend improvements. Threat Detection & Incident Response: Lead or support the response to network-related security incidents and coordinate appropriate containment and remediation activities. Investigate network security alerts, vulnerabilities, and suspected security breaches. Maintain incident records and provide timely escalation of significant security events. Perform root-cause analysis following security incidents and implement preventive measures. Monitor emerging cyber threats and assess their potential impact on the organization's infrastructure. Vulnerability & Security Risk Management: Support risk assessments relating to network infrastructure, third-party connectivity, and technology projects. Ensure network devices, systems, and security appliances are appropriately patched and securely configured. Identify security weaknesses and coordinate remediation with relevant technology teams. Ensure security controls remain aligned with organizational policies and applicable regulatory requirements. Conduct vulnerability assessments and support penetration testing activities across network infrastructure. Security Monitoring & Reporting: Develop and maintain network security monitoring processes and dashboards. Prepare periodic reports on network security posture, incidents, vulnerabilities, and remediation activities. Analyze logs, alerts, and security events to identify trends and potential risks. Maintain accurate documentation of network security architecture, configurations, procedures, and controls. Business Continuity & Secure Connectivity: Support the security and resilience of network infrastructure used for critical business operations. Implement and test secure remote access and connectivity solutions. Support disaster recovery and business continuity exercises involving network infrastructure. Ensure redundancy and failover mechanisms are appropriately secured and tested. Stakeholder & Vendor Management: Collaborate with IT Infrastructure, Applications, Risk, Internal Audit, Compliance, and other business teams on security initiatives. Provide technical guidance and security awareness to relevant internal stakeholders. Provide security input into new technology implementations, system upgrades, and infrastructure projects. Work with external technology and security vendors to resolve technical issues and improve security capabilities.  Requirements: Educational Qualification: Candidates should possess a Bachelor's Degree in: Computer Science, Information Technology, Cybersecurity, Computer Engineering, Network Engineering or a related discipline. Relevant professional certifications such as CISSP, CEH, CCNP Security, CompTIA Security+, Fortinet, Palo Alto, or equivalent certifications will be an added advantage. Experience: Proven experience: managing enterprise network security environments. Must have 4–6 years of relevant experience: in network security, cybersecurity, network engineering, or infrastructure security. Strong hands-on experience: with firewalls, VPNs, IDS/IPS, network monitoring, and access control technologies. Experience: with vulnerability management, incident response, and security assessments. Experience: within the insurance, banking, financial services, or other regulated environments is an advantage. Technical Competencies: Cloud & Hybrid Network Security Network Access Control Network Security Incident Response Vulnerability Management IDS/IPS Security Information & Event Management (SIEM) Network Monitoring Firewall Administration TCP/IP & Network Protocols Cybersecurity Risk Management VPN & Remote Access Security Windows/Linux Security Security Architecture Core Competency: Cybersecurity & Risk Management — ability to proactively identify network vulnerabilities, respond effectively to security threats, implement robust security controls, and maintain a secure and resilient technology environment. Remuneration Competitive How to Apply Interested and qualified candidates should send their CV to: [email protected] using the Job Title as the subject of the email. Application Deadline: 14th September, 2026. View all Jobs in Nigeria Lagos State Network Security Engineer job vacancies in Nigeria