Cyber Security Specialist : Networks

Optimal Growth Technologies; Johannesburg; On-site; ZAR 800 000 - 1 000 000; Full time

Job summary

A leading technology company in Johannesburg is seeking a Cyber Security Specialist to lead the implementation of advanced security measures across mobile, fixed, satellite, cloud, and IoT networks. The ideal candidate will possess over 8 years of experience in cyber security, a degree in Information Technology, and strong skills in risk management and team leadership. This role offers an opportunity to mentor junior professionals and drive key security initiatives in a collaborative environment.

Qualifications

• 8+ years of experience in Cyber Security role for Enterprise / IP Networks.
• Strong understanding of security frameworks like NIST, ISO 27001, and CIS Controls.
• Industry certification e.g. ISO 27001 Lead practitioner, CCIE(Security) preferred.

Responsibilities

• Lead the development of advanced cyber security capabilities across various networks.
• Oversee risk assessments and project delivery aligned with regulatory requirements.
• Mentor junior team members to ensure effective execution of security controls.

Skills

Cyber risk management

Strong leadership skills

Excellent problem-solving skills

Strong communication skills

Ability to work collaboratively

Education

3 year Degree in Information Technology

Matric / Grade 12

Tools

SIEM

NetFlow

Job description

Overview

Job title: Cyber Security Specialist : Networks

Job Location: Gauteng, Johannesburg

Deadline: December 01, 2025

Role purpose

• Lead the development and implementation of advanced cyber security capabilities and controls across companies mobile, fixed, satellite, cloud, and IoT networks to protect against evolving threats.
• Oversee risk assessments, stakeholder engagement, and project delivery in alignment with regulatory requirements.
• Provide leadership and mentorship to junior team members, fostering innovation and ensuring effective execution of security controls.

Key accountabilities

• Lead Security Implementation
• Drive the design and execution of cyber security implementations for mobile, fixed, satellite, cloud, and IoT networks, ensuring resilience against sophisticated threats.
• Direct Workstream Delivery
• Manage the end-to-end delivery of key security initiatives for Enterprise domains
• Enterprise CPE, Core Network, Network Management Systems, Office Connectivity,
• Cyber Security Controls - Monitoring & Analytics, and Measurement & Assurance
• covering scope definition, design, deployment, and performance review to prevent lateral attack movement.
• Cyber Risk and Compliance Management
• Conduct targeted risk assessments and apply security controls to address vulnerabilities across network infrastructure, maintaining compliance with ISO 27001, NIST, and applicable regulatory frameworks.

Core competencies, knowledge, and experience

• Matric / Grade 12 essential
• 3 year DegreeRelevant tertiary qualification in Information technology
• 8+ years of experience in Cyber Security role where you meet business deliverables for Enterprise / IP Networks
• Strong understanding of cyber risk management and security frameworks, such as NIST, ISO 27001, and CIS Controls.
• Strong knowledge of Enterprise / Fixed networks
• Excellent problem-solving skills, with the ability to identify and analyse complex issues
• Strong communication skills, both written and verbal
• Ability to work collaboratively with cross functional teams and stakeholders
• Strong leadership skills, with the ability to lead and manage teams effectively
• Strong organizational skills, with the ability to manage multiple tasks and priorities
• Monitoring and Assurance Enhancement
• Implement sustainable processes for near real-time threat detection and continuous security posture assessment, integrating monitoring tools such as SIEM and NetFlow, and ensuring second-line assurance to validate control effectiveness.
• Leadership and Capability Development
• Provide guidance and mentorship to junior cyber security professionals, fostering a culture of innovation, collaboration, and excellence to ensure effective security control execution in line with strategic and operational goals.

Desired

• An industry certification e.g. ISO 27001 Lead practitioner, CCIE(Security), CCSP CGEIT, CRISC, CISA, CISM and CISSP / CSSP is strongly preferred
• ICT jobs