Senior Network Engineer (m/f/x)
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As of now
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Permanent Role
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Fulltime (40h / week)
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Berlin or 100% remote
Your Mission
As the “network glue,” you will play a pivotal role in ensuring the smooth operation of our complex and automated WAN and core infrastructure, which spans five data centers across Germany. You will orchestrate our network components to maintain a robust and high-performance infrastructure at all times. Together with a team of SysEleven network and data center experts, you will serve as a point of contact for colleagues across various teams, actively supporting them in delivering a highly available cloud infrastructure. You don’t need to have “Senior” in your title—what matters is your willingness to take responsibility and grow within a complex infrastructure environment. In addition to your daily tasks, you’re eager to contribute independently to the ongoing development of our network infrastructure and make a lasting impact.

Details
Your responsibilities:
- Responsibility for the design, operation, and ongoing development of the core network infrastructure, including backbone, routing core, and data center interconnects, in close collaboration with other infrastructure teams
- Support in consolidating the cloud and network stack through architectural and design work as well as the selection and implementation of appropriate hardware and software components
- Creation and maintenance of comprehensive network documentation, including network diagrams, configuration guides, and operational policies
- Administration and troubleshooting of network resources, including the configuration and monitoring of switches, routers, firewalls, and load balancers, as well as resolution of network issues and outages
- Participation in on-call duty for network-related topics after the probation period (with extra compensation), limited to the network domain
What you have to bring on board:
- Extensive experience with dynamic routing protocols such as OSPF, IS-IS, and BGP
- Hands-on experience operating and configuring common network products such as Juniper, Arista, and/or Nokia in production environments
- In-depth knowledge of network topologies and core infrastructures, particularly architectures such as MPLS/VPLS, VXLAN, IPv6, and data center interconnects
- Familiarity with firewall and load balancer vendors, as well as their implementation and management
- Ideally, experience with CI/CD pipelines and the application of GitOps practices in a networking context
What to expect at SysEleven:
With us, you’ll work with a wide range of technologies in the field of network infrastructure, including routing, switching, firewalling, VPN, load balancing, and management. You can expect a varied role involving a broad set of technologies. We place great importance on thorough documentation and offer automation frameworks that you can build on or learn to use. Our environment incorporates both open-source and commercial solutions from various vendors. Our network stands out through its high standards and sophisticated design and operations. Within our open organizational structure, you’ll have the opportunity to collaborate with other tech enthusiasts on new projects and actively help shape them.
Interessiert? Dann freuen wir uns darauf Dich kennenzulernen!

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