Senior Network Security Engineer

Placements24; Midrand; On-site; ZAR 850,000 - 1,300,000; Full time

Benefits offered by this job

Medical aid

Provident fund

Life insurance

Bonuses / performance-based incentives

Certification support

Job summary

Placements24 in Midrand, Gauteng, South Africa, seeks a highly experienced Senior Network Security Engineer to design, implement and maintain robust security across the enterprise network. The role emphasizes threat detection, incident response, and policy enforcement to protect sensitive data.

The candidate will oversee security infrastructure, collaborate with IT and development teams, and mentor junior engineers while staying current with evolving cyber threats and technologies.

Qualifications

• Bachelor's degree in Computer Science or Information Security or a related field.
• 7+ years of experience in network security engineering, with a focus on enterprise networks.
• Strong knowledge of network security principles, protocols, and technologies (TCP/IP, firewalls, VPNs, SSL/TLS, authentication).
• Hands-on experience with SIEM platforms, vulnerability scanners, and endpoint protection solutions.
• Experience with cloud security concepts (AWS, Azure, GCP) is highly desirable.
• Security policy development and implementation skills.
• Excellent communication and leadership abilities; CISSP, CCNP Security, or GIAC are strongly preferred.

Responsibilities

• Design, implement, and manage network security infrastructure (firewalls, IDS/IPS, VPNs, WAFs).
• Develop and enforce network security policies, standards, and procedures.
• Conduct regular security assessments, vulnerability scans, and penetration testing.
• Monitor network traffic and security logs for suspicious activity and breaches.
• Respond to security incidents, leading containment, eradication, and recovery.
• Collaborate with IT and development teams to integrate security into architecture and lifecycles.
• Stay current with threats and mitigation techniques; mentor junior engineers.
• Manage security-related projects and documentation.

Education

Bachelor's degree in Computer Science / Information Security

Tools

SIEM

Vulnerability scanners

Endpoint protection

Job description

About the Role

Our client, a prominent force in the telecommunications industry, is seeking a highly experienced and security-conscious Senior Network Security Engineer . This role is critical to safeguarding our client's extensive network infrastructure against evolving cyber threats. You will be responsible for designing, implementing, and maintaining robust security solutions, monitoring network activity for potential breaches, and responding effectively to security incidents. The ideal candidate possesses deep expertise in network security technologies, a proactive mindset, and a commitment to maintaining the integrity and confidentiality of sensitive data. This is an excellent opportunity to join a leading company and make a significant impact on their security posture from their offices in Midrand, Gauteng, ZA .

Key Responsibilities

• Design, implement, and manage network security infrastructure, including firewalls, IDS/IPS, VPNs, and web application firewalls (WAFs).
• Develop and enforce network security policies, standards, and procedures.
• Conduct regular security assessments, vulnerability scans, and penetration testing.
• Monitor network traffic and security logs for suspicious activity and potential security breaches.
• Respond to security incidents, leading containment, eradication, and recovery efforts.
• Collaborate with IT and development teams to integrate security into the network architecture and application lifecycles.
• Stay current with the latest security threats, vulnerabilities, and mitigation techniques.
• Provide technical guidance and mentorship to junior security engineers.
• Manage security-related projects and ensure their timely and successful completion.
• Maintain accurate documentation of security configurations, policies, and incident reports.

Requirements

• Bachelor's degree in Computer Science, Information Security, or a related field.
• Minimum of 7 years of experience in network security engineering, with a strong focus on enterprise networks.
• In-depth knowledge of network security principles, protocols, and technologies (e.g., TCP/IP, firewalls, VPNs, SSL/TLS, authentication).
• Hands-on experience with security tools such as SIEM platforms, vulnerability scanners, and endpoint protection solutions.
• Experience with cloud security concepts (AWS, Azure, GCP) is highly desirable.
• Proficiency in security policy development and implementation.
• Strong analytical and problem-solving skills, with the ability to respond effectively under pressure.
• Excellent communication and interpersonal skills, with the ability to articulate complex security issues to both technical and non-technical audiences.
• Relevant security certifications such as CISSP, CCNP Security, or GIAC are strongly preferred.
• Proven ability to manage and lead security initiatives.

Benefits

Our client offers a competitive salary commensurate with experience and a comprehensive benefits package, including medical aid, a provident fund, life insurance, and performance-based bonuses. Employees benefit from a dedicated learning and development program, including support for professional certifications and continuous training. The company fosters a collaborative and innovative work environment, with opportunities for career advancement within the organization. You will be working at the forefront of network security in the telecommunications sector, based at our client's state-of-the-art facility in Midrand, Gauteng, ZA.