Cybersecurity Network Security Specialist

Role Overview

You will manage and secure enterprise network infrastructure across on-prem and cloud environments, ensuring reliable connectivity, strong security posture, and consistent network operations. The role combines hands-on administration, troubleshooting, and continuous improvement of network security capabilities.

Responsibilities

Network Security & Operations

• Administer, monitor, and troubleshoot network security solutions
• Manage firewalls, routing, switching, and secure access technologies
• Ensure secure and stable operation of enterprise network infrastructure
• Support hybrid connectivity (on-prem and cloud environments)

Support & Troubleshooting

• Provide 2nd line support for network and security-related incidents
• Perform advanced troubleshooting (network flows, packet analysis, firewall dataplane)
• Investigate and resolve connectivity, performance, and security issues

Configuration & Implementation

• Implement and maintain network configurations across environments
• Manage VPNs, secure remote access, and network segmentation
• Support wireless and wired network integrations (e.g. 802.1X, NAC)

Security & Continuous Improvement

• Identify gaps in network security controls and propose improvements
• Support Zero Trust and modern security architecture initiatives
• Contribute to migration efforts (e.g. SASE/SSE, cloud networking)

Documentation & Governance

• Create and maintain technical documentation and operating procedures
• Ensure adherence to network security policies and standards

Core Networking

• Strong understanding of TCP/IP, routing, and network security policies
• Knowledge of DNS, DHCP, NTP and core network services
• Understanding of wired and wireless access technologies

Security & Encryption

• Knowledge of HTTPS, SSL/TLS, PKI, and certificate-based authentication
• Experience with traffic filtering (stateful/stateless)

Infrastructure & Tools

• Hands-on experience with enterprise network environments
• Experience with Cisco (routing/switching), Palo Alto (firewalls, Panorama), wireless solutions
• Familiarity with endpoint network configurations (Windows, Linux, iOS)

Cloud & Modern Networking

• Azure networking (VNets, segmentation, private endpoints, hybrid connectivity)
• Network security controls (NSGs, routing, isolation)
• Experience with SASE/SSE and Zero Trust principles is an advantage
• Exposure to WAF and Load Balancing solutions

Certifications

• CCNP Security or equivalent (required)
• CCSP or Azure AZ-305 (nice to have)

Key Competencies

• Strong analytical and troubleshooting skills
• Attention to detail and sense of responsibility
• Ability to work independently in complex environments
• Clear communication with technical and non-technical stakeholders
• Proactive, structured, and team-oriented mindset

• This role requires occasional travel within Europe (up to ~10 times/year)
• Driving license (Category B) required