October 26, 2026# Senior Network Engineer (m/f/d)* Hanover* Full-time* Permanent## We're looking for you as a Senior Cloud Engineer (m/f/d)Are you comfortable working in complex **cloud and infrastructure environments** and ensuring that our systems run stably, securely, and efficiently? Then you’ve come to the right place! To strengthen our team, we’re looking for an experienced **Senior Cloud Engineer (m/f/d)** to provide technical support for our **cloud and data center infrastructure** and to continuously improve it.## This Is UsSince **1971**, we at GRASS-MERKUR in Hanover have been designing digital infrastructure that others can rely on. In our **highly secure data center, featuring approximately 3,500 m2 of white space**, we ensure day in and day out that businesses, government agencies, and critical infrastructure are secure, reliable, and future-proof—from colocation and managed services to private cloud and network solutions. Our cloud and managed services are also certified: to **ISO/IEC 27001** for information security, supplemented by ISO/IEC 27017 for cloud security and ISO/IEC 27018 for the protection of personal data.More than **60 colleagues** contribute their expertise here and together serve **over 100 clients**, ranging from small and medium-sized businesses to DAX-listed corporations. What we’re especially proud of: We **haven’t** had **a single outage** in the last ten years—a testament to the care and passion with which our team works.We’re also thinking about tomorrow. With approximately **95% green electricity**, certified to ISO 14001 and ISO 50001 and awarded the EcoZert 2025, we take responsibility—for our customers and for the environment. At the same time, we’re driving innovation forward: With **power densities of up to 40 kW per rack**, we’re specifically preparing our infrastructure for AI and high-performance computing. Anyone who joins us becomes part of a team that embodies reliability and actively shapes the future.## Why GRASS-MERKUR?At GRASS-MERKUR, you’ll find a **family-run business with flat hierarchies** and quick decision-making processes—now in its **fifth generation**. We give you the freedom to **contribute your own ideas** and take on responsibility right from the start. Modern, future-proof jobs, **personalized professional development**, and a close-knit team are all part of what we offer as a matter of course.## Your GRASS-MERKUR Benefits* Exciting and technically challenging client projects in a variety of system environments* Opportunities for professional development* An attractive compensation package that includes a company car* A flexible work model with trust-based working hours* Jobrad subsidy* Hansefit membership## Your Duties & Responsibilities* You plan, design, and implement modern Layer 2 and Layer 3 networks* You build and further develop spine-leaf architectures* You configure and operate BGP-based networks* You plan and implement EVPN, including EVPN multihoming* You develop and optimize routing and switching concepts* You operate complex network environments and analyze and resolve Layer 2 and Layer 3 issues* You plan and implement redundancy, high-availability, and failover concepts* You carry out changes, migrations, and expansions during live operations* You create and maintain network documentation and technical concepts* You work closely with system administration, cloud, security, and DevOps teams* You assist with the automation and standardization of network processes## Your technical focus* Layer 2: VLAN, 802.1Q, LACP, STP, MLAG and Ethernet* Layer 3: IPv4/IPv6, Routing, OSPF, BGP, ECMP and High Availability* Data Center: Spine-Leaf, VXLAN, EVPN, BGP-EVPN, Underlay/Overlay, Anycast Gateway, OVS/OVN* Automation: Ansible, Python, REST APIs and Infrastructure as Code## What You Bring to the Table* Several years of professional experience as a Network Engineer or Network Administrator (m/f/d)* Very good knowledge of IPv4/IPv6, TCP/IP, and Ethernet* In-depth knowledge of Layer 2 and Layer 3 technologies* Extensive experience with BGP and EVPN* Proficiency with VLAN, LACP, EVPN multihoming, MLAG, or comparable redundancy technologies* Experience in network troubleshooting and packet analysis, e.g., using tcpdump or ovn-trace* Experience with SDN based on OVS and OVN* Understanding of high availability, redundancy, and scalable network architectures* Proficiency in network automation, e.g., using Ansible, Python, and APIs* Experience with one or more vendors such as Arista, FortiGate, SONiC, Edgecore, or comparable platforms* A structured, solution-oriented approach to work with a hands-on mindset* Strong communication skills and a passion for teamwork* Good command of German and English## Did you recognize yourself?Then we look forward to receiving your application via email at
[email protected], or you can apply directly online using the application form.**Do you have any questions?** Johannes Nöth is happy to assist you by phone: +49 172 7916 344 #J-18808-Ljbffr