Security Systems Administrator
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Job Location:
The Hague - Netherlands
Monthly Salary:
Not Disclosed
Posted on:
30-10-2025
Vacancies:
1 Vacancy
Job Summary
- Manage daily operational activities including incident handling configuration changes and service request fulfilment mainly on Check Point firewalls F5 BIG-IP load balancers Cisco Email Security Appliances and Forcepoint Secure Web Gateways.
- Implement approved changes following internal change management procedures including documentation validation and rollback planning.
- Support troubleshooting of connectivity performance and security control issues in collaboration with networking and application teams.
- Apply recurring updates such as security policy modifications SSL certificate renewals virtual server configuration and rule-base tuning.
- Maintain configuration consistency with architecture standards and compliance requirements.
- Prepare post-change reports and maintain change and incident records within clients ServiceNow ITSM tool.
- Provide root cause analysis for recurring operational issues and propose corrective actions.
- Assist in system hardening performance optimization and version upgrade preparation under supervision of the infrastructure architect.
Qualifications :
- Bachelors degree plus 9 years of relevant experience.
- Working knowledge of English (B2 or higher)
- Active security clearance.
- Minimum of 5 years of strong administration experience with:
- Check Point Security Gateway and Management (R81.x) including rule base maintenance and VPN configuration.
- F5 BIG-IP (LTM ASM APM modules) including load balancing SSL offloading and traffic policy management.
- Minimum of 5 years of experience with reading and interpreting logs from multiple sources to diagnose and close incidents effectively.
- Proficiency in Check Point Security Gateway and Management (R81.x) MDS including rule base maintenance and VPN configuration and troubleshooting.
- Proficiency in F5 BIG-IP (LTM ASM APM modules) configuration and management including load balancing SSL offloading and traffic policy management.
- Knowledge and proficiency in network and security protocols (TCP/IP SSL TLS HTTP/S DNS).
- Knowledge of change management and ticket-handling processes according to ITIL v4.
- Familiarity with internal segmentation high-availability configurations and load distribution best practices.
Desirable:
- Minimum of 3 years of hands-on capability with CLI scripting and automation tools.
- Knowledge of change management and ticket-handling processes according to ITIL v4.
- Understanding of enterprise security policies and operational control procedures.
- Ability to enforce configuration and access management compliance.
- Skills in documenting changes and recording configuration baselines for audit readiness.
- Awareness of regulatory requirements and best practices relevant to secure system administration.
Remote Work :
No
Employment Type :
Full-time
Key Skills
- Computer Science
- Active Directory
- Computer information Technology
- PowerShell
- OS
- Windows
- Database
- SCCM
- Linux
- SAN
- Troubleshoot
- Backup
- Setup
- Technical Support
- UNIX
About Company
Ar?s is a fully independent group of companies specialized in managing complex IT projects and systems for large organisations, focusing on state-of-the-art software development, business intelligence and infrastructure services. We are composed of 17 entities across 9 countries that ... View more
