IT Firewall Administrator (m/f/d)

MBS is a German owner-managed company specializing in secure communications and space, with around 300 employees across the group. With our own ground stations in Germany and Europe as well as operational payloads in orbit, we have been developing and operating space-based solutions for government and industrial customers worldwide for almost 50 years. Our core services include satellite communications, satellite-based intelligence, and Managed Gateways.

Working at MBS means making a direct contribution to Europe’s security infrastructure, with real responsibility from day one.

As an IT Firewall Administrator, you are the guardian of our digital infrastructure. At one of our locations in Usingen near Frankfurt, Munich, or Hamburg, you ensure that our networks remain secure, high-performing, and resilient at all times. You operate, monitor, and optimize our firewalls and security systems, guaranteeing that communication flows safely and reliably from the data center to the cloud. With your expertise and attention to detail, you set security standards that protect our critical communication services worldwide.

• Administration, configuration, and maintenance of our firewall and security infrastructure (Fortinet, SonicWall)
• Set-up and operation of VPN and remote access solutions (SSL-VPN, IPsec)
• Monitoring, analysis, and reporting of security-relevant events using modern monitoring and logging tools
• Creation, maintenance, and continuous optimization of firewall rule sets in collaboration with specialist departments
• Implementation of security policies, network segmentation, and access control concepts
• Support with IT security audits, penetration tests, and vulnerability assessments
• Participation in infrastructure projects and further development of network security architecture
• Documentation of network topologies, configurations, and change processes

• Completed vocational training or university degree in an IT-related field (e.g., IT specialist for system integration, computer science, or similar)
• Several years of experience in administering firewall systems, ideally Fortinet and SonicWall
• Solid knowledge of network security, VPN, NAT, routing, and switching
• Experience with network protocols (TCP/IP, DNS, DHCP, HTTP/S, SNMP)
• Understanding of IT security standards and compliance requirements
• Structured, responsible, and solution-oriented working approach
• Strong communication skills, team-oriented mindset, and confident handling of sensitive information
• Required language skills: German – C1, English – C1

• Freedom, trust and responsibility for the tasks assigned to you in an international environment with flat hierarchies
• Flexibility in terms of working hours thanks to flexitime arrangements and a mix of presence at the company location and home office
• Extensive equipment including a company mobile phone and laptop
• Long-term support in acquiring new skills through further training
• Permanent employment contract with 30 days of holiday and employer contributions to the company pension scheme
• Free charging stations for electric vehicles at the main site in Usingen
• Further financial benefits: Benefit card with monthly credit & motivational leasing for electric cars through employer subsidy