Security Infrastructure Specialist (Firewall/Network Security)

NATO Communications and Information Agency (NCIA); Henegouwen; Sur place; EUR 64 000 - 85 000; Plein temps

Avantages offerts par ce poste

Private health insurance

Expatriation and education allowances

30 days annual leave + holidays

NATO Pension Scheme

Professional training and wellbeing

Résumé du poste

Based in Mons, Belgium, the NATO Communications and Information Agency (NCIA) seeks a Cyber Security Infrastructure Specialist to support the NCSC in lifecycle management of CIS security, firewall governance and cross-domain protection.

You will implement, monitor and optimize firewalls, manage data diodes and mailguards, and collaborate across infrastructure and cyber teams to triage incidents and improve security posture.

Qualifications

• Bachelor's degree or equivalent experience with 2+ years in security infra.
• Design, implement and maintain security infrastructure at scale.
• Experience in cyber security activities in large enterprises.
• Strong knowledge of firewall deployment and management.

Responsabilités

• Enterprise-wide implementation, maintenance and monitoring of Next-Generation Firewalls.
• Firewall policy and rule management and optimization.
• Develop automation procedures to streamline firewall management.
• Configure and troubleshoot on-premises and cloud-based network security devices.
• Manage Cross Domain Security systems such as Data-Diodes and Mailguards.
• Collaborate with Infrastructure Management and Cyber Security teams.
• Participate in security incident triage including investigation and remediation.

Connaissances

Next-Generation Firewalls

Firewall policy management

Automation for firewall management

Network security devices

Cross Domain Security systems

Data diodes & mailguards

Security infrastructure design

Cyber security in large enterprises

English communication

Formation

Bachelor’s degree + 2 years post-related experience

Or 6 years progressive security experience

Outils

Firewall devices

Data Diodes

Mailguards

Cross Domain Security systems

Description du poste

NATO Body

NATO Communications and Information Agency (NCIA)

Primary Location

Belgium-Mons

NATO Body

NATO Communications and Information Agency (NCIA)

Schedule

Full-time

Application Deadline

04-Oct-2026, 5:59:00 PM

Salary (Pay Basis)

6,713.06

Grade

NATO Grade G15

Who we are:

For more than 70 years, NATO’s mission has been to preserve peace and security in the Alliance for nearly one billion citizens. The NATO Communications and Information Agency (NCI Agency) and its predecessors have worked tirelessly in providing the means that enable the connectedness and togetherness that keep our Alliance strong. We are the NCI Agency, a team of 3000 civilian and military staff in 29 locations throughout Europe, North America and Asia. Our technology and cyber experts allow NATO to conduct critical operations, protect NATO’s airspace, make data-driven decisions, defend against cyber-attacks, secure NATO networks and maintain superiority in space. This is all possible because of our greatest force, our people. In order to keep this edge we aim to hire, train and retain the very best staff. Our staff members represent both the diversity and unity of our Alliance. When you join the NCI Agency, you will be part of an organization where you can contribute authentically to the mission and purpose of NATO and help us keep our technological edge.

About the job:

Based in Mons, Belgium you will join the Agency as we embark on a journey to transform our IT services to support NATO’s Digital Endeavour. You will join NATO Cyber Security Centre (NCSC), which is responsible for planning and executing all lifecycle management activities for cyber security. In executing this responsibility, NCSC provides specialist cyber security-related services covering the spectrum of scientific, technical, acquisition, operations, maintenance, and sustainment support, throughout the lifecycle of NATO Communications and Information Systems (CIS). A typical day of a Cyber Security Infrastructure Specialist revolves around system changes, lifecycle of firewalls, and other network security devices. You will take on the following roles and responsibilities:

• Enterprise-wide implementation, maintenance and monitoring of Next-Generation Firewalls (using all advanced security features);
• Firewall policy and rule management;
• Develop and implement automation procedures to streamline firewall management;
• Configure, manage, and troubleshoot existing (day-to-day activities) and newly implemented (on-premises of cloud-based) network security devices;
• Management, maintenance and configuration of Cross Domain Security systems such as Data-Diodes and Mailguards;
• Collaborate with other Infrastructure Management and Cyber Security teams;
• Participate in security incident triage activities, such as investigation, identification and remediation.

For a full list of duties, please review the job description on the NCI Agency career site .

About you:

• A Bachelor’s degree at a nationally recognised/certified University in a related discipline and 2 years post-related experience; Or exceptionally, the lack of a university degree may be compensated by the demonstration of a candidate’s particular abilities or experience that is/are of interest to NCI Agency, that is, at least 6 years extensive and progressive expertise in duties related to the function of the post;
• At least 2 years practical experience of designing, implementing, and maintaining security infrastructure;
• Experience of cyber security activities and support in large, complex enterprise environments;
• Strong knowledge and experience of Boundaries Protection Devices including firewall installation and management;
• Extensive expertise in network security, intrusion detection and prevention systems;
• Strong network knowledge and ability to create documentation including diagrams and processes;
• Good knowledge in the administration and concepts of full packet capture, mail and web guards, data diodes, proxies or other network security devices;
• Experience and sound knowledge of Computer and Networks Security principles and procedures;
• Comprehensive knowledge of the principles of computer and communication security, LAN/WAN networking including protocol network architecture, and the vulnerabilities of modern operating systems and applications;
• Practical experience identifying and mitigating security vulnerabilities;
• Ability and desire to stay up to date with the latest security technologies and trends;
• Strong communication and analytical skills;
• Fluency in English, both written and spoken.

What we offer:

• Genuinely meaningful work as part of the most successful alliance in history;
• 5 year contract with competitive tax-free salary and household and children’s allowances;
• Privileges for expatriate staff including expatriation and education allowances (where appropriate) and additional home leave;
• Excellent private health insurance scheme;
• Generous annual leave of 30 days plus official holidays;
• NATO Pension Scheme;
• Development programs such as professional training, wellbeing, and more.

To learn more about NCI Agency and our work, please visit our website .

The NCI Agency prides itself on being an equal opportunity employer. We are committed to fostering an inclusive environment of mutual respect and value uniqueness and differences in gender, gender identity, race, ethnic or cultural origin, age, religion, sexual orientation and physical or neurocognitive ability.

Additional details on the conditions of application can be found via the NCI Agency career site.