Endpoint Security Expert

h3Duties Requirements /h3 pPosition: CSU Brussels – Endpoint Security Expertbr/Reference Number: C br/Equivalent NATO Grade: G12br/Work

Location:
Brussels, Belgiumbr/Security Clearance: NATO Secret /p h31. Main Duties and Responsibilities /h3 pThe Endpoint Security Expert will be responsible for managing, maintaining and improving NATO's endpoint security environment, with a particular focus on Trellix security products. /p pKey responsibilities include: /p h31. Endpoint Security Management /h3 ul liManage the complete lifecycle of assigned endpoint security products. /li liMaintain and develop security policies, configurations, baselines, exclusions and exceptions. /li liEnsure endpoint security solutions are aligned with NATO security requirements and industry best practices. /li /ul h32. Trellix Product Management /h3 ul liManage the full range of Trellix products, including Threat Prevention, Application Control, Host Firewall, Data Loss Prevention (DLP) and Drive Encryption. /li liPlan, coordinate and lead Trellix product upgrades at least every two months. /li liDeploy upgrades across Windows laptops, workstations, VDI environments, and Windows/Linux servers. /li /ul h33. Security Operations and Incident Response /h3 ul liSupport incident response activities in collaboration with CSU teams and the Service Desk. /li liInvestigate and troubleshoot Trellix-related incidents and technical problems. /li liAnalyse security events, logs, alerts and endpoint data exchanges. /li liPerform root cause analysis and resolve performance-related issues. /li /ul h34. Security Policy Implementation /h3 ul liTest and implement NATO endpoint security policies. /li liOptimise security configurations and policies to balance protection and system performance. /li liManage security exceptions through established approval procedures. /li /ul h35. Technical Advisory and Collaboration /h3 ul liProvide technical expertise and guidance on endpoint security architecture and engineering decisions. /li liWork closely with IT administrators, security teams and other stakeholders. /li liEnsure endpoint configurations meet security standards and operational requirements. /li /ul h36. Documentation and Continuous Improvement /h3 ul liDevelop and maintain Standard Operating Procedures (SOPs). /li liDocument technical processes, configurations and operational procedures. /li liContribute to the continuous improvement of endpoint security processes, standards and governance. /li liPromote knowledge sharing across technical teams. /li /ul h32. Required Skills, Knowledge and Experience /h3 ul liTrellix expertise: Recent hands‑on experience implementing and managing the full range of Trellix products. /li liEndpoint security: Strong experience securing Windows endpoints and Windows/Linux servers. /li liIT service management: Experience working in complex IT environments and following ITIL processes. /li liIncident management: Strong troubleshooting, root cause analysis and problem‑solving capabilities. /li liSecurity analysis: Ability to analyse security events, logs, alerts and endpoint data. /li liCommunication: Strong communication and coordination skills when working with multiple technical teams. /li liDocumentation: Ability to produce technical documentation, SOPs and knowledge‑sharing materials. /li liIndependence: Ability to work autonomously, take ownership and drive technical issues to resolution. /li liAnalytical

skills:
Strong analytical and technical assessment capabilities. /li /ul h33. Contract and Working Conditions /h3 ul liRequirement number: C /li liLocation: Brussels, Belgium /li liNATO grade: G12 /li liStart date: 7 December 2026 /li liEnd date: 30 December 2026 /li liTotal effort: 300 hours /li liWorking arrangement: 100% on‑site /li liRemote work: Limited possibility, approximately 1 day per week /li liSecurity clearance: NATO Secret /li liTravel: None /li liWorking environment: Normal, non-smoking office environment /li /ul h34. Ideal Candidate Profile /h3 pThe ideal candidate is a senior Endpoint Security Engineer / Trellix Security Specialist with extensive practical experience managing enterprise endpoint protection solutions in a complex, security‑sensitive IT environment. /p pThe candidate should demonstrate: /p ul liIn‑depth knowledge of the Trellix product portfolio. /li liHands‑on experience with Trellix ePolicy Orchestrator (ePO) and endpoint security administration. /li liExperience managing security policies across large Windows and Linux environments. /li liProven experience planning and executing enterprise‑wide security product upgrades. /li liStrong understanding of endpoint security architecture, incident response and troubleshooting. /li liFamiliarity with ITIL‑based service management processes. /li liAbility to work independently in a NATO or similarly regulated environment. /li liExcellent technical documentation and stakeholder communication skills. /li liValid NATO Secret security clear