Senior Security Engineer Consultant
Quick Summary
Participate in operational security (SecOps) for both internal systems and clients. Administer, configure, and optimize Security Centers (SIEM, EDR, vulnerabilities). Manage SOC alerts:
containment, analysis, remediation, and reporting. Establish and adjust detection rules, dashboards, alerts, and playbooks. Configure and secure client technical environments: servers, networks,
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.
Responsibilities
~1 min read- →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.
- 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.
- 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.
- Compétences « soft skills »
- Rigueur et sens du détail, indispensable pour les environnements critiques.
- Esprit analytique, capacité à diagnostiquer et résoudre des incidents complexes.
- Clarté de communication, aussi bien avec des profils techniques que non techniques.
- Autonomie et initiative, capacité à prioriser dans un contexte multi-clients.
- Esprit collaboratif, travail en équipe avec le CISO, l’ISM et les équipes techniques.
- Sens du service, essentiel pour les activités MSP et la relation client.
- Compétences techniques (niveau fonctionnel/encadrement)
- Très bonnes connaissances des environnements Windows Server / Linux.
- Maîtrise des concepts réseau : firewalls, VLAN, VPN, routage, segmentation.
- Expérience en solutions EDR/XDR, SIEM et outils SOC.
- Pratique du durcissement système et des benchmarks (CIS, NIST, ANSSI).
- Connaissances en Azure / Entra ID / Microsoft 365 / Microsoft Security Center appréciées.
- Compréhension des vulnérabilités, CVE, scoring, remédiation.
- Bonne maîtrise de la documentation technique.
- Une expérience sur environnements multi-clients / MSP est un atout majeur.
- Langue : Maitrise parfaite du français et de l’anglais technique
- Expérience
- 5 à 7 ans d’expérience dans un rôle d’ingénieur sécurité, SecOps ou ingénieur système/réseau orienté sécurité.
- Expérience confirmée dans l’administration d’outils sécurité (EDR, SIEM, monitoring).
- Expérience en réponse aux incidents ou suivi SOC souhaitée.
- Expérience MSP, MSSP ou multi-clients fortement appréciée.
- Connaissance avérée de la directive NIS2, ISO 27001 ou cadres équivalents
- Certifications techniques ou sécurité appréciées (MS-500/SC-200, CySA+, CEH, etc.).
- View more
- Job specifications
- Ingénieur Sécurité_12062026.docx
Requirements
~1 min readEnglish
Level Professional working proficiency
French
Level Native or bilingual proficiency
Location & Eligibility
Listing Details
- First seen
- June 12, 2026
- Last seen
- June 12, 2026
Posting Health
- Days active
- 0
- Repost count
- 0
- Trust Level
- 51%
- Scored at
- June 12, 2026
Signal breakdown
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