Senior Security Engineer (SecOps / Infrastructure Security)
Context of the Mission
* A key organisation operating in a critical infrastructure sector is reinforcing its cybersecurity capabilities in line with NIS2 regulatory requirements.
* The organisation delivers digital and infrastructure services to multiple stakeholders and operates in a multi-client / managed services environment.
* The mission is to strengthen the internal security team with a hands-on Security Engineer, contributing to operational security, infrastructure hardening, and regulatory compliance.
Mission Objectives
* The consultant will:
* Improve the overall security posture across internal and client environments
* Contribute to SecOps activities and SOC operations
* Support security tool optimisation (SIEM, EDR, monitoring)
* Assist in achieving and maintaining NIS2 compliance
Key Responsibilities
* 1. Operational Security (SecOps)
* Administer and optimise Security Center tools (SIEM, EDR, vulnerability management)
* Monitor and manage SOC alerts (triage, investigation, escalation)
* Participate in incident response (analysis, containment, remediation, reporting)
* Implement detection rules, dashboards, and playbooks
* Support improvement of detection and response capabilities
2. Infrastructure Security (Internal & Clients)
* Secure and configure servers, networks, cloud environments, firewalls
* Maintain and enhance tools such as:
* SIEM / EDR
* IDS/IPS
* Anti-malware solutions
* Implement system hardening standards (CIS, NIST, ANSSI)
* Perform technical security reviews and define remediation plans
3. Security Projects & Vulnerability Management
* Contribute to security-related projects (e.g., unified vulnerability management)
* Manage vulnerabilities (CVE analysis, scoring, remediation)
* Ensure proper documentation of configurations and architectures
4. Governance & Compliance (NIS2)
* Contribute to risk assessments and security analyses
* Support development of policies, procedures, and processes
* Assist in audit preparation and compliance monitoring (NIS2, ISO27001)
* Produce security KPIs, dashboards, and reporting
* Support integration of regulatory frameworks into operations
5. Cross-functional Collaboration
* Work closely with infrastructure, network, development, and support teams
* Provide security expertise across projects
* Contribute to awareness initiatives when required
Required Profile Experience
* 5–7 years in cybersecurity / SecOps / security engineering
* Proven experience with:
* SIEM / EDR tools
* SOC or incident response environments
* Strong experience in multi-client or MSP environments is a major advantage
Technical Skills
* Strong knowledge of:
* Windows Server and Linux environments
* Networking (firewalls, VPN, segmentation, routing)
* Experience with:
* SIEM / SOC platforms
* EDR/XDR solutions
* Vulnerability management
* Knowledge of:
* Azure / Microsoft security stack (nice to have)
* Security frameworks (ISO27001, NIST, CIS)
Soft Skills
* Analytical mindset and strong problem-solving abilities
* Strong communication (technical and non-technical audiences)
* Autonomous and structured
* Ability to manage priorities in a multi-client context
Languages
* Fluent in French and technical English
* Practical Information
* Work model: Hybrid
* Duration: 12 months
* Start date: July 2026
* Workload: Full-time
Key Success Factors
* Ability to operate hands-on in SecOps environments
* Strong contribution to incident detection and response maturity
* Effective integration of security standards and compliance frameworks
* Clear documentation and collaboration across teams