Cybersecurity Network Security Specialist

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.

Arηs Group was acquired by Accenture in July 2024.

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