Cybersecurity Technician

Sentior, Ltd.; Brussel Hoofdstad; Hybrid; EUR 56,000 - 78,000; Full time

Job summary

Sentior, Ltd. in Brussels is seeking a Cybersecurity Technician to provide 2nd level support for CIS monitoring and security incident response within the NATO HQ Element networks.

You will assist in testing, scanning, monitoring and documenting security activities, under supervision of the BSU Chief and BGX Officers. This role requires strong Windows/Linux experience, firewall/SIEM expertise, and SOC processes, with proficiency in English.

Qualifications

• Higher secondary education with at least 3 years post related experience.
• At least 1 year of experience with Windows and Linux operating systems.
• Experience with firewall and intrusion detection technologies.
• Experience with security tools: firewalls, proxies, guard technology, SIEM, scanning tools.
• Experience in SOC processes and procedures.
• Ability to identify and describe computer and network anomalies.
• Effective written and oral communication; able to work outside regular hours.
• NATO COSMIC TOP SECRET security clearance and advanced English level required.

Responsibilities

• Provide 2nd level support for CIS monitoring and security incident response.
• Contribute to CIS security testing, scanning, monitoring, baselining and documentation.
• Report status and discoveries of the security posture of NATO HQ Element networks.
• May undertake operational deployments and travel within/beyond NATO boundaries.

Skills

CIS security

Windows OS

Linux OS

Firewall tech

SIEM tools

Penetration testing

Log analysis

SOC processes

Threat hunting

Network monitoring

English

Education

Higher secondary education

Tools

N/A

Job description

# Cybersecurity TechnicianNATO Brussel Belgium 3 maandenGepubliceerd 3 uur geleden · Opportunity ID: 1052017Tarief indicatie —Uren 40 u/wStart 31 Oct 2026Duur 3 maandenInteresse in deze opdracht?## De opdrachtBICES-0001 Cybersecurity TechnicianDuties- Under the supervision of the BSU Chief and in close coordination with the BGX Security Officers and Engineers, the incumbent provides 2nd level support for complex technical cybersecurity-based activities in the area of CIS monitoring and security incident response.- S/He contributes to the day-to-day CIS security testing, verifications, scanning, monitoring, updating, baselining, improving and documenting activities of the cybersecurity capabilities implemented within the BICES NATO HQ Element networks.- The incumbent reports the status and the discoveries of the security posture of BICES NATO HQ Element networks and contributes to the monitoring, analysis and modifications of security services.- The incumbent may be required to undertake operational deployments and/or travel duty assignments both within and beyond NATO's boundaries.Requirement- The incumbent must possess higher secondary education with at least 3 years post related experience and possess at least 1 year post-related experience in CIS security activities.- The incumbent must possess at least 1 year of experience in Windows and Linux based operating systems and platforms, of update service platforms and technologies and of IP based networking and devices.- The incumbent must possess at least 1 year of experience in firewall and intrusion detection technologies.- The incumbent must possess at least 1 year of experience in security tools such as firewalls, proxies, guard technology, SIEM solutions and scanning tools.- The incumbent must possess at least 1 year of experience in Security Operations Centre (SOC) processes and procedures.- The incumbent must possess at least 1 year of experience invulnerability assessment and penetration testing techniques, log fusion and log analysis capabilities.- The incumbent must demonstrate the ability to identify and describe computer and network anomalies within a CIS and to understand, assess and solve technical issues.- The incumbent must be able to communicate effectively orally and in writing.- The incumbent must be flexible to work outside regular office hours.- The contractor must be in possession of a NATO COSMIC TOP SECRET security clearance.- The incumbent must possess level V (Advanced) of the English language.Preferences- The following will be considered an advantage: knowledge of NATO security policies and supporting directives.- The following will be considered an advantage: experience working in a multinational environment.- The following will be considered an advantage: familiarity with NATO structure and procedures.- The following will be considered an advantage: experience with the application of techniques/methods for source verification, data fusion, quality analysis, and threat actor profiling.