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September 15, 2026
Security Engineer (Firewall)
Senior • On-site
55,000 - 85,000 EUR/yr
Dortmund, Nrw, Germany
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Quick Facts
Role: Security Engineer (Firewall)
Focus: Fortinet firewall operations and security enhancements, including IDS/IPS and network segmentation
Also includes: Zscaler SASE administration (ZIA/ZPA) and regulatory compliance (e.g., DORA)
Description
Operate and continuously improve the Fortinet firewall infrastructure (including FortiManager), including IDS/IPS configuration and maintenance. Design and implement network segmentation strategies to increase IT security resilience and administer the Zscaler SASE platform (ZIA/ZPA). Ensure security-relevant requirements are met according to legal obligations (especially DORA) while maintaining security documentation and policies.
Responsibilities
Operate and further develop Fortinet firewall infrastructure (including FortiManager)
Configure and maintain IDS/IPS functions in the Fortinet environment
Concept and implement network segmentation strategies for higher IT security resilience
Administer the Zscaler SASE platform (ZIA/ZPA)
Implement security requirements according to legal/regulatory rules (particularly DORA)
Create and maintain technical documentation and security guidelines/policies
Requirements
Successfully completed degree in MINT subjects
Practical experience in network security with focus on firewall technologies (Fortinet) and network segmentation
Experience with Zscaler products (ZIA/ZPA)
Practical knowledge of administering IDS/IPS on Fortinet firewalls
Good knowledge of relevant security standards; ideally experience with regulatory requirements (e.g., DORA)
Secure communication in German and English
Independent and structured way of working
Benefits
Mobile work: up to two days per week from home
Flexible working hours without core or minimum working time
Company pension plan with employer support
Corporate health management (preventive care, vaccinations, sports, seminars)
Extensive training offer (internal and external workshops, training, coaching)
Voluntary employer benefits: savings/asset-building contributions and special payments (Christmas and vacation pay)
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