Job
- Level
- Senior
- Job Field
- IT, Network
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Location
- Stuttgart, Bonn
- Working Model
- Onsite
Job Summary
In this role, you will be responsible for operating and enhancing the network and security infrastructure, including firewall management and hybrid cloud solutions, while implementing modern network technologies.
Job Technologies
Your role in the team
- Ensure that our enterprise IT remains secure, stable, and future-proof.
- In this role, you will be responsible for the development and operation of our network and security landscape - from modern firewall architecture and Zero Trust concepts to hybrid cloud and data center environments.
- If you want to not only manage complex infrastructures but also strategically develop them further, you can expect a role with a high degree of autonomy, modern technologies, and ample scope for creativity.
- Design, administration, and optimization of the corporate network architecture (LAN, WAN, SD-WAN, VLAN, Layer 2/3).
- Administration of firewalls including rule set management and policy optimization.
- Implementation and enforcement of network segmentation, Zero Trust concepts, and NAC.
- Support of VPN, remote access, and site networking solutions for our national and international locations.
- Monitoring and analysis of network traffic and security-related events.
- Optimization of WAN, Internet, and Cloud connections (e.g., Azure integration).
- Participation in security architecture and infrastructure hardening measures.
- Documentation of network topologies, policies, and standards.
- Administration of Windows Server, Active Directory, and Azure/AWS.
- Management of DNS, DHCP, and Group Policies.
- Support for hybrid identity structures (AD / Entra ID).
- Operation of virtualization platforms in our own data centers.
- Participation in patch management, backup, and recovery processes.
- 2nd- / 3rd-Level Support in an infrastructure environment.
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Our expectations of you
Qualifications
- Solid knowledge of network architecture (Layer 2/3, Routing, Switching, VLAN, ACLs).
- Good understanding of segmentation concepts and ideally Zero-Trust.
- Good knowledge of Windows Server and Active Directory.
- Good knowledge of Microsoft 365 / Entra ID.
- Structured and analytical working style in complex environments.
- Strong security awareness.
- Independent working style with high responsibility for critical systems.
- Teamwork and cross-departmental collaboration.
- Excellent communication in German and English.
Experience
- At least 5 years of experience in an enterprise network environment.
- Proven experience in firewall administration and network security.
- Experience with enterprise firewall solutions (e.g., Fortinet, Palo Alto, Sophos, Cisco).
- Experience with VPN technologies and SD-WAN.
- Experience with hybrid cloud integration (Azure) is an advantage.
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What we offer
- Doxis is like a big family, offering flexibility and numerous additional benefits as well as a modern office environment with top-notch facilities.
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Topics that you deal with on the job
Job Locations
This is your employer
SERgroup
SER Group is one of the leading European software providers for Enterprise Content Management (ECM). More than five million users work with the SER Group's Doxis ECM platform every day - on-premises, hybrid or in the cloud.
Description
- Company Type
- Established Company
- Working Model
- Onsite
- Industry
- Trade
Senior Network & Infrastructure Administrator
- Location
- Stuttgart, Bonn
- Working Model
- Onsite
- Diversity
- Open for all genders
