C005322 Second Line Security Event Analyst (NS) - TUE 15 Sep

EMW; Henegouwen; Sur place; EUR 70 000 - 90 000; Plein temps

Résumé du poste

EMW is seeking a Second Line Security Event Analyst to join the on-site CSOC in Mons, Belgium. The role involves reviewing investigations, escalating complex cases, and delivering 24x7 on-call support for second-line security operations.

You will design and maintain detection rules across SIEM/EDR tools, tune alerts to reduce false positives, and mentor junior analysts. Strong English skills and NATO SECRET clearance are required, with 3+ years in a SOC environment.

Qualifications

• The candidate must have a currently active NATO SECRET security clearance.
• Bachelor's degree or five years of related experience if no degree.
• Minimum three years of hands-on SOC/CSOC/GSOC experience.
• Proven track record in in-depth cyber-incident analysis and reporting.
• Expertise extracting and analyzing logs from diverse sources using SIEM/EDR tools.
• Hands-on PCAP analysis with Wireshark, tcpdump or Zeek.
• Ability to translate attacker TTPs into detection logic.
• Experience with SOAR and automation to improve workflows.
• Strong written and verbal communication; professional English.
• Relevant cyber-security certifications (CISSP, CISM, GCIA, etc.).

Responsabilités

• Review and validate investigations, supporting First-Line Analysts to ensure alert closures meet standards.
• Act as technical escalation point for cyber-security monitoring using SIEM/SOAR platforms.
• Provide on-call support as part of a 24x7 roster for second-line escalations.
• Design, develop, test and maintain detection rules, alerts and analytics.
• Adjust logic, thresholds, and suppression rules to reduce false positives.
• Provide feedback and coaching to First-Line Analysts and assist onboarding.
• Support weekly operational duties and highlight risks to service continuity.
• Participate in purple teaming events to test detection coverage.
• Collaborate with Threat Hunting to operationalize findings into detections.
• Write and update SOPs, run-books, and knowledge-base articles.
• Represent CSOC in project planning and provide expertise on detection-content design.
• Collaborate with internal and external stakeholders across Defend-branch and NCI Agency.
• Perform other duties including ad-hoc projects to strengthen CSOC resilience.

Connaissances

SOC operations

Threat analysis

Log analysis

SOAR automation

Attention to detail

Formation

Bachelor's degree in a related discipline

Outils

Splunk

Microsoft Sentinel

Elastic Kibana

Description du poste

Deadline Date: Tuesday 15 September 2026

Requirement: Second Line Security Event Analyst

Location: Mons, BE

Full Time On-Site: Yes

Time On-Site: 100%

Total Scope of the request (hours): 395

Required Start Date: 26 October 2026

End Contract Date: 31 December 2026

Required Security Clearance: NATO SECRET

Duties & Role:

Under the direction of the Team Lead and CSOC Section Head the contractor shall:

• Review and validate investigations, supporting First-Line Analysts to ensure that alert closures, escalations, supporting evidence and investigation notes meet CSOC quality standards, confirming completeness, accuracy and procedural compliance.
• Act as the technical escalation point for cyber-security monitoring. Perform in-depth log analysis and threat-triage using the SIEM and SOAR platforms (Splunk Enterprise Security, Splunk SOAR, Microsoft Sentinel) together with supporting data sources and security appliances, and decide whether to forward the case to Incident-Handling Officers.
• Provide on-call support as part of a 24 × 7 roster, delivering round-the-clock coverage for second-line escalations.
• Design, develop, test and maintain detection rules, alerts and analytics across the cyber-security monitoring tool-set.
• Continuously adjust logic, thresholds, allow-lists, suppression rules and severity mappings to reduce false positives and improve coverage of emerging threats.
• Provide regular, constructive feedback and coaching to First-Line Analysts on investigation techniques, analytical approach and reporting quality, and support the onboarding and training of new staff.
• Support the Duty Second-Line Analyst with weekly operational responsibilities, monitor open tasks, follow up on pending actions and highlight issues that could affect CSOC service continuity.
• Participate in purple teaming events within NCSC in order to test and improve CSOC’s detection coverage.
• Collaborate with Threat Hunting Team (CTIS) to operationalize their findings into automated detections where applicable.
• Contribute to continuous-service-improvement initiatives by identifying workflow inefficiencies, monitoring blind-spot(s) and recommending process enhancements.
• Write and update operational documentation, SOPs, run-books and knowledge-base articles that underpin Service Delivery Management (SDM) and the wider CSOC team.
• Represent the CSOC during project planning, implementation and transition activities, ensuring that monitoring and visibility requirements are fully considered, and offer expertise on detection-content design, log-source integration and security-tool configuration for any cyber-security projects undertaken by the organisation.
• Collaborate with internal and external stakeholders, working closely with other Defend-branch sections and, when required, the wider NCI Agency.
• Perform other duties as required, including ad-hoc projects, special investigations or support activities that fall outside the listed responsibilities, to ensure the overall effectiveness and resilience of the CSOC.

Specific Working Conditions: If working from a remote location, the contractor shall provide IT equipment for the processing of public and unclassified information in support of their duties, including the capability to participate in video meetings using Microsoft based collaboration tools.

Travel required: The contractor may be required to travel to NCIA locations in support of operational duties. In such cases the contractor will be reimbursed for travel costs according to NATO regulations for traveling on NATO duty. Contractors traveling for work purposes shall initiate travel requests from their designated duty station only.

Skills, Knowledge & Experience:

• The candidate must have a currently active NATO SECRET security clearance
• A minimum requirement of a Bachelor's degree from a nationally recognised/certified university in a related discipline and three years post-related experience. Alternatively, the lack of a university degree may be compensated by the demonstration of a candidate's particular abilities or experience of interest to the NCI Agency, provided the candidate has at least five years of extensive and progressive expertise in duties related to the function of the post.
• Minimum three years of hands-on experience in a Security Operations Centre (SOC, CSOC, GSOC or equivalent) or a closely related cyber monitoring environment.
• Proven expert-level track record of conducting in-depth analysis of complex cyber-security incidents and producing clear, authoritative reports and recommendations for supporting teams and external partners.
• Adept at extracting, normalising and interrogating raw log data from diverse sources (e.g., Windows Event Logs, Linux syslog, Sysmon, EDR/XDR platforms such as Microsoft Defender, Sentinel One, or CrowdStrike) using SIEM and query tools (Splunk, Microsoft Sentinel, Elastic Kibana). Able to filter, correlate and visualise events to verify alerts, reconstruct attacker activity across hosts, and provide actionable evidence for escalation and remediation decision
• Hands-on packet-capture (PCAP) analysis experience - extracting, filtering and interpreting network traffic with tools such as Wireshark, tcpdump or Zeek to corroborate alerts, reconstruct attack timelines and support escalation decisions.
• Demonstrable ability to translate attacker TTPs and threat intel into operational detection logic and to conduct structured quality or peer reviews of analyst investigations, identifying gaps and recommending improvements.
• Experience in designing, developing and maintaining detection rules, alerts and analytics across SIEM, EDR/XDR and cloud security tools (e.g., Splunk, Microsoft Sentinel, Azure, AWS).
• Experience supporting or mentoring less-Experienced analysts, providing constructive feedback on investigation quality and reporting standards.
• Practical experience with automation or SOAR use cases, identifying repetitive manual tasks and creating enrichment or workflow improvements.
• Strong written and verbal communication skills, with a history of producing clear investigation notes, escalation summaries and documentation.
• Very good communication and analytical skills.
• Language proficiency in English: meet or exceed the NATO STANAG 6001 Level 3 "Professional Proficiency".
• Relevant cyber-security certifications (e.g., CISSP, CISM, GIAC-certified credentials such as GCIH, GCFA, or GSEC; CompTIA CySA+) or equivalent recognised professional training.

Desirable

• A university degree (Bachelor's) in Cyber Security, Information Technology, Computer Science or a related discipline.
• Experience working in a regulated, high control environment such as defence, government, financial services or other enterprise sectors.
• Hands on experience with cloud native security monitoring (Azure, AWS) and hybrid environments.
• Experience with developing detections from network and edge security devices such as Cisco, Fortinet/Fortigate, Palo Alto, or comparable appliances.
• Experience in working for or supporting a military or governmental organization.