About Systal
We are Systal: a global managed network, cloud and security transformation specialist.
We provide complex and strategic technology services for enterprise businesses, managing 200,000+ assets across 93 countries. These services help our customers achieve strategic technology transformation and maximise the business value, security and innovative potential of their IT infrastructure
Description
The L3 Network Security Engineer is responsible for providing senior-level technical expertise, operational leadership, and escalation support across complex enterprise security and network infrastructure environments. The role focuses on the design support, implementation, optimisation, and troubleshooting of advanced network security technologies to ensure the confidentiality, integrity, and availability of customer environments.
Key Responsibilities
Investigate perimeter and security incidents
Monitor security-related network events
Ensure network access controls align with security policy
Support secure edge connectivity (ZTNA, VPN policies)
Manage authentication, firewall and perimeter policies
Maintain DC perimeter and segmentation controls
Own firewall policy governance, rule management and perimeter security
Approve security-related network configuration changes
Validate security configuration automation
Ensure secure segmentation and access controls
Review security controls impacting performance
Maintain security policy documentation
Analyse security event patterns and perimeter performance
Key Requirements
Extensive experience in network security engineering, cybersecurity operations, or enterprise infrastructure environments
Advanced understanding of networking technologies including TCP/IP, routing, switching, VPNs, SD-WAN, segmentation, and secure network architecture
Strong hands-on experience with enterprise security platforms such as Palo Alto, Fortinet, Cisco Firepower/ASA, Check Point, Zscaler, or equivalent technologies
Proven ability to troubleshoot and resolve complex security and connectivity incidents across enterprise and hybrid cloud environments
Experience designing, implementing, and optimising firewall policies, VPN solutions, intrusion prevention systems, secure remote access, and network segmentation strategies
Advanced understanding of cybersecurity principles including zero trust, least privilege access, threat mitigation, vulnerability management, and security hardening
Experience supporting cloud security technologies and architectures within AWS, Microsoft Azure, or hybrid cloud environments
Familiarity with SIEM, logging, and security analytics platforms such as Splunk, Sentinel, QRadar, or equivalent tools
Strong experience performing root cause analysis, threat investigation, and operational security troubleshooting
Understanding of security compliance and governance frameworks such as ISO 27001, NIST, CIS Controls, GDPR, or equivalent standards
Experience with automation and scripting technologies such as Python, PowerShell, or Ansible would be advantageous
Familiarity with ITIL-aligned operational processes including Incident, Change, Problem, and Major Incident Management
Strong technical documentation skills with the ability to produce operational standards, security procedures, and low-level technical designs
Excellent communication and stakeholder management skills with the ability to engage effectively with technical teams, leadership, vendors, and customers
Relevant certifications such as CISSP, CCNP Security, Check Point CCSA/CCSE, or equivalent are highly desirable
Why come and work with us at Systal?
Competitive salary and benefits package.
Unrivalled training and development, ensuring you stay at the top of your field. We want you to be the best in your chosen field and continuously support training.
Fantastic working environment – our state-of-the-art offices and established remote teams create a positive environment to work in both in person and virtually.
Systal’s core is its people. Our culture and success is founded upon having the best performing people in a high performing culture to deliver the best-in-class customer experience. Our mission is to be the world’s most trusted technology services partner – inspiring, empowering and enabling the innovation and transformation of today and tomorrow. And we want you to join us!
Systal only communicates with candidates via official channels and verified @systaltech.com email addresses. If you’d like to verify a message, please contact
[email protected].
