Security risk and infrastructure officer

Mission Overview:

Keystone Solutions is seeking a Security Risk and Infrastructure Officer for a consultancy mission within the health sector in Brussels. As a Keystone Solutions consultant, you will operate on-site with the client to deliver a mix of infrastructure hardening, firewall gap resolution, controls design and execution, technical interventions, and process updates to achieve and sustain NIS2 compliance.

Consultancy Model at Keystone Solutions:

In this role, you will be employed by Keystone Solutions and work closely with the client’s teams on their premises in Brussels. You will represent Keystone Solutions’ standards and values while executing critical security and infrastructure activities directly within the client environment. Expect hands-on delivery, clear stakeholder communication, and a focus on measurable outcomes under Keystone’s consultancy framework.

Key Responsibilities:

• Infrastructure hardening: plan, implement, and validate hardening measures across servers, endpoints, networks, and cloud components to reduce attack surface.
• Firewall gap resolution: assess existing firewall configurations, identify gaps and misconfigurations, and implement ruleset improvements and segmentation to meet security and compliance objectives.
• Controls design and execution: design, implement, and operate security controls aligned to NIS2 and the health sector context, ensuring effective governance, monitoring, and evidence generation.
• Technical interventions: execute hands-on remediation activities, patching, configuration changes, and incident-driven fixes across infrastructure and security tooling.
• Process update for NIS2 compliance: review, update, and document security processes and procedures to align with NIS2 requirements, including incident reporting, risk management, and continuity.
• As a Keystone Solutions consultant, perform the above responsibilities on-site with the client, coordinating with IT, Security, Compliance, and Clinical Operations stakeholders to ensure timely and controlled implementation.
• Create and maintain technical and procedural documentation, including hardening baselines, firewall change records, control implementation guides, and NIS2 evidence logs.
• Contribute to risk assessments, gap analyses, and remediation plans specific to essential services in the health sector.
• Support audit readiness and participate in internal and external audits related to NIS2 and broader cybersecurity frameworks.

Required Skills and Experience:

• Proven, hands-on experience in infrastructure hardening across Windows/Linux systems, network devices, and cloud or virtualized environments.
• Strong expertise in firewall administration and analysis (e.g., policy review, segmentation, rule lifecycle management, logging, and monitoring) with demonstrated gap resolution.
• Practical experience designing and executing security controls mapped to regulatory requirements; familiarity with NIS2 obligations and their operationalization in the health sector.
• Ability to perform technical interventions safely in production environments with robust change management and rollback approaches.
• Process design and update skills, including SOP creation, RACI definition, workflows, and KPI/metric selection for control effectiveness.
• Competence in vulnerability management, patch orchestration, and configuration baselines (e.g., CIS, vendor hardening guides).
• Comfort with security tooling (e.g., EDR, SIEM, vulnerability scanners) and scripting or automation for repeatable hardening tasks.
• Clear, concise documentation and stakeholder communication skills; ability to translate technical risk into business impact.
• Fluency in English; French or Dutch is a plus in the Brussels and Belgian healthcare context.
• Ability to work on-site in Brussels; valid work authorization for Belgium.

Consultancy Advantages with Keystone Solutions:

• Consultancy nature of work: Operate on-site as a Keystone Solutions consultant, embedding with client teams to deliver secure, compliant infrastructure outcomes while upholding Keystone’s standards.
• Dynamic projects: Engage with diverse technical challenges—from firewall optimization to enterprise hardening baselines and audit preparation—gaining exposure to complex, real-world healthcare environments.
• Turbo-charged learning and development: Access mentoring, knowledge-sharing sessions, and certifications support focused on cybersecurity, NIS2, and critical infrastructure best practices.
• Ambition skyrocketing within a consultancy framework: Build a portfolio of high-impact client engagements that accelerate your career progression and broaden your expertise.

Values of a K-Stone in Every Engagement:

• Craftsmanship: Deliver high-quality, evidence-backed security outcomes with measurable risk reduction.
• Integrity: Act with transparency and accountability in every client decision and change.
• Client impact: Prioritize pragmatic, operational solutions that work in clinical and critical environments.
• Knowledge sharing: Elevate client capability through clear documentation, enablement, and coaching.

Role-Specific Consultancy Impact:

• Apply your security risk and infrastructure expertise across multiple scenarios—hardening, firewall tuning, and control execution—tailored to the client’s healthcare operations and NIS2 obligations.
• Shape and refine security processes that balance regulatory compliance with clinical continuity and patient safety.
• Establish repeatable patterns (templates, baselines, playbooks) that Keystone Solutions can scale across future client missions.

Assignment Details:

• Sector: Health sector (essential services under NIS2).
• Location: Brussels (on-site with the client; hybrid possible depending on project phase).
• Engagement: Consultancy mission via Keystone Solutions with close collaboration alongside the client’s IT/Security teams.
• Start date: As soon as available.
• Contract: Employee or freelance consultant via Keystone Solutions.

Success Indicators:

• Documented infrastructure hardening baselines implemented and verified.
• Firewall gap findings resolved with auditable change records and improved telemetry.
• Security controls designed, executed, and evidenced against NIS2 requirements.
• Updated processes and procedures accepted by stakeholders and ready for audit.
• Reduced risk exposure demonstrated through metrics and follow-up assessments.

Why Keystone Solutions:

• We combine hands-on technical delivery with regulatory fluency to help clients meet NIS2 obligations without disrupting essential services.
• You join a community of consultants who value excellence, impact, and continuous growth.
• Your work directly enhances resilience and patient care by securing critical healthcare infrastructure.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.