Context

Digit’Eaux is the reference partner for water sector actors in Wallonia for their digital transformation projects, notably supporting SWDE, SPGE, and several Accredited Sanitation Organizations (OAA).

Recognized as an essential entity under the NIS2 directive, Digit’Eaux is involved in the design, coordination, and implementation of structuring IT projects covering infrastructure and information security for the entire sector.

In this context, the Digit’Eaux Cybersecurity division wishes to strengthen its team with an experienced Security Engineer, responsible for contributing to the protection of the information systems of a Walloon intermunicipal company active in the fields of water (sanitation and drinking water), spatial planning, economic development, and renewable energies.

The consultant will join the internal security team and work closely with the technical teams of the relevant cooperative.

Mission

The Senior IT Security Engineer strengthens Digit’Eaux’s capacity to protect its internal systems and those of its clients.

In collaboration with the CISO and the Information Security Officer, they actively participate in operational security (SecOps), optimization of the Security Center (SIEM/EDR), SOC monitoring, as well as the hardening and technical review of environments.

The position has a strong multi-client dimension: configuration, supervision, and securing of outsourced infrastructures as part of our MSP activities.

The objective is to improve the overall security posture, contribute to NIS2 compliance, and support the CISO in the technical and organizational activities of the security department.

• Main responsibilities

• Operational Security (SecOps – Internal & Clients)

• Administer, configure, and optimize Security Centers (SIEM, EDR, vulnerabilities).

• Manage SOC alert monitoring: qualification, analysis, escalation, coordination with technical teams.
• Participate in incident response activities: containment, analysis, remediation, reporting.

• Implement and adjust detection rules, dashboards, alerts, and playbooks.

• Management and securing of client environments

• Configure and secure clients’ 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).
• Perform technical security reviews of projects and propose remediation plans.

• Document architectures, configurations, and security parameters.

• Governance & NIS2 compliance

• Contribute to technical risk analyses internally and for clients.

• Participate in drafting and improving policies, procedures, and processes.
• Prepare and support audits (internal, client, NIS2).

• Produce posture reports, KPIs, and security dashboards.

• Cross-functional support & coordination

• Collaborate with systems, network, development, and support teams.

• Provide technical security advice in internal and client projects.
• Participate, if necessary, in security awareness for teams.

Soft Skills

Rigor and attention to detail, essential for critical environments.
Analytical mindset, ability to diagnose and resolve complex incidents.
Clear communication, both with technical and non-technical profiles.
Autonomy and initiative, ability to prioritize in a multi-client context.
Collaborative spirit, teamwork with the CISO, ISM, and technical teams.
Service-oriented mindset, essential for MSP activities and client relationships.

Technical Skills (functional/management level)

• Very good knowledge of Windows Server / Linux environments.
• Mastery of network concepts: firewalls, VLAN, VPN, routing, segmentation.
• Experience with EDR/XDR solutions, SIEM, and SOC tools.
• Experience in system hardening and benchmarks (CIS, NIST, ANSSI).
• Knowledge of Azure / Entra ID / Microsoft 365 / Microsoft Security Center appreciated.
• Understanding of vulnerabilities, CVE, scoring, remediation.
• Good command of technical documentation.
• Experience in multi-client / MSP environments is a major asset.
• Language: Perfect command of French and technical English.

Experience

5 to 7 years of experience in a Security Engineer, SecOps, or security-oriented System/Network Engineer role.

• Proven experience in administering security tools (EDR, SIEM, monitoring).
• Experience in incident response or SOC monitoring desired.
• MSP, MSSP, or multi-client experience highly appreciated.
• Proven knowledge of the NIS2 directive, ISO 27001, or equivalent frameworks.
• Technical or security certifications appreciated (MS-500/SC-200, CySA+, CEH, etc.).