Mission Overview: Keystone Solutions is seeking an experienced Security Engineer for a consultancy mission at a client site. The consultant will play a crucial role in enhancing the security posture of information systems within the water sector in Wallonia, focusing on operational security and compliance with NIS2 regulations. Key Responsibilities: Participate in operational security (SecOps) for both internal systems and clients. Administer, configure, and optimize Security Centers (SIEM, EDR, vulnerabilities). Manage SOC alerts: qualification, analysis, escalations, and coordination with technical teams. Engage in incident response activities: containment, analysis, remediation, and reporting. Establish and adjust detection rules, dashboards, alerts, and playbooks. Configure and secure client technical environments: servers, networks, cloud, firewalls. Maintain and adjust security tools: EDR, SIEM, IDS/IPS, anti-malware solutions. Develop security-related projects such as unified vulnerability management. Apply hardening benchmarks (CIS, ANSSI, NIST). Conduct technical security reviews of projects and propose remediation plans. Document architectures, configurations, and security parameters. Contribute to internal and client technical risk analyses. Participate in drafting and improving policies, procedures, and processes. Prepare and support audits (internal, client, NIS2). Produce posture reports, KPIs, and security dashboards. Collaborate with systems, network, development, and support teams. Provide technical security advice in internal and client projects. Participate in security awareness initiatives for teams as needed. Required Skills: Soft Skills: Attention to detail, analytical mindset, clear communication, autonomy, initiative, collaborative spirit, and service orientation. Technical Skills: Strong knowledge of Windows Server / Linux environments, networking concepts (firewalls, VLAN, VPN, routing, segmentation), experience with EDR/XDR, SIEM, and SOC tools, system hardening practices, and familiarity with Azure / Entra ID / Microsoft 365. Language: Proficient in French and technical English. Experience: 5 years of experience in a security engineer role, SecOps, or security-focused system/network engineering. Proven experience in administering security tools (EDR, SIEM, monitoring). Experience in incident response or SOC monitoring is preferred. Experience in MSP, MSSP, or multi-client environments is highly valued. Strong knowledge of NIS2 directive, ISO 27001, or equivalent frameworks. Technical or security certifications are appreciated (MS-500/SC-200, CySA, CEH, etc.). If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal. Duration: 01/07/2026 - 30/06/2027 12 months (full time) Skills required: Comptences soft skills Rigueur et sens du dtail, indispensable pour les environnements critiques. Esprit analytique, capacit diagnostiquer et rsoudre des incidents complexes. Clart de communication, aussi bien avec des profils techniques que non techniques. Autonomie et initiative, capacit prioriser dans un contexte multi-clients. Esprit collaboratif, travail en quipe avec le CISO, lISM et les quipes techniques. Sens du service, essentiel pour les activits MSP et la relation client. Comptences techniques (niveau fonctionnel/encadrement) Trs bonnes connaissances des environnements Windows Server / Linux. Matrise des concepts rseau : firewalls, VLAN, VPN, routage, segmentation. Exprience en solutions EDR/XDR, SIEM et outils SOC. Pratique du durcissement systme et des benchmarks (CIS, NIST, ANSSI). Connaissances en Azure / Entra ID / Microsoft 365 / Microsoft Security Center apprcies. Comprhension des vulnrabilits, CVE, scoring, remdiation. Bonne matrise de la documentation technique. Une exprience sur environnements multi-clients / MSP est un atout majeur. Langue : Maitrise parfaite du franais et de langlais technique Exprience 5 7 ans dexprience dans un rle dingnieur scurit, SecOps ou ingnieur systme/rseau orient scurit. Exprience confirme dans ladministration doutils scurit (EDR, SIEM, monitoring). Exprience en rponse aux incidents ou suivi SOC souhaite. Exprience MSP, MSSP ou multi-clients fortement apprcie. Connaissance avre de la directive NIS2, ISO 27001 ou cadres quivalents Certifications techniques ou scurit apprcies (MS-500/SC-200, CySA, CEH, etc.). View more Job specifications Ingnieur Scurit_12062026.docx Language requirements: English Level Professional working proficiency French Level Native or bilingual proficiency