C004645 First Line Security Event Analyst (NS) - FRI 27 Feb

Deadline Date: Friday 27 February 2026

Requirement: First Line Security Event Analyst

Location: Mons, BE

Full Time On-Site: Yes

Time On-Site: 100%

Total Scope of the request (hours): 1254

Required Start Date: 13 April 2026

End Contract Date: 31 December 2026

Required Security Clearance: NATO SECRET

Duties & Role:

As a First Line Security Event Analyst (FLSEA), the incumbent will perform initial analysis of logs and network traffic, determine alert severity and escalate when required. The analyst will collate information and present findings in a clear, structured format, providing remediation recommendations and first line response where applicable.

Main responsibilities:

• Conduct research and assessments of security events within NATO Cyber Security Centre (NCSC) team.
• Provide analysis of firewall, IDS, anti-virus and other network sensor produced events and present findings.
• Appropriately leverage the comprehensive extended toolset (e.g. Log Collection, Intrusion Detection, Packet Capture, VA, Network Devices etc.) for enhancing investigations.
• Support the end-to-end Incident Handling process.
• Support threat intelligence sharing and block list management activities.
• Propose optimisations and enhancements which help to maintain and improve NATO's Cyber Security posture.

Normal office conditions as part of a 24/7, 365-day shift rotation. This currently consists of 12-hour shifts, including day shifts (07:00–19:00) and night shifts (19:00–07:00). The rota also includes some on-call days and standard daytime shifts (08:30– 17:30). Shift patterns and durations may change in line with business needs.

Requirements

Skill, Knowledge & Experience:

• The candidate must have a currently active NATO SECRET security clearance
• A university degree in a technical subject with a focus on Information Technology (IT), obtained from a nationally recognised/certified institution in addition to a minimum of 1 year experience in the field of cyber security analysis. The lack of a degree may be compensated by at least 3 years of relevant experience in field of cyber security analysis. Similarly, candidate's lacking experience can compensate by demonstrating a high level of knowledge in the field of cybersecurity.
• Comprehensive knowledge of the principles of computer and communications security including knowledge of TCP/IP networking, Windows and Linux operating systems.
• Broad understanding of common network security threats and mitigation techniques.
• Experience in Security Information and Event Management products (SIEM) – e.g. Splunk.
• Experience in analysis of Network Based Intrusion Detection Systems (NIDS) events– e.g. FirePower, Palo Alto Network Threat Prevention.
• Experience in log analysis from a variety of sources (e.g. Firewalls, Proxies, Routers, DNS and other security appliances).
• Experience in network traffic capture analysis using Wireshark.
• Logical approach to analysis and ability to perform structured security investigations using large, complex data sets.
• Good written and spoken communication skills.
• Ability to work independently and as part of a team.

Desirable

• Holding industry leading certifications in the area of cyber security such as GCIA, GNFA, GCIH.
• Computer Incident Response Centre (CIRT), Computer Emergency Response Team (CERT).
• Proficiency in Intrusion/Incident Detection and Handling.
• Experience in Full Packet Capture systems – e.g. RSA/NetWitness.
• Experience in Endpoint Detection and Response Systems (EDR).
• Experience in computer forensics tools (stand alone, online and network).
• Experience in military communication systems and networks