Manager Network & Systems Administration (m/f/d)

Mission Brief

We are seeking a hands-on Manager Network & Systems Administration to lead, maintain, and modernize our hybrid infrastructure. In this role, you will act as both a technical lead and an infrastructure owner, bridging our on-premise virtualization, enterprise networking, and multi-cloud environments.

This is a hands-on lead position designed for a senior engineer who excels at architecture, network engineering, and troubleshooting while serving as the primary technical authority for our infrastructure. You will be responsible for end-to-end reliability, system security, network connectivity, and overseeing automated deployment workflows—from bare-metal hypervisors to cloud routing.

Your Role in Our Space Mission:

Technical Leadership & Operations

• Hands-on Infrastructure Leadership: Serve as the primary technical subject matter expert (SME) and escalation point for all systems, virtualization, and network architecture.

• Vendor & Asset Management: Oversee infrastructure vendor relationships, license agreements, hardware lifecycles, and service level agreements (SLAs).

• Incident & Capacity Planning: Lead major incident responses, perform root-cause analysis (RCA), and proactively monitor capacity across storage, compute, and network links.

Multi-Cloud & Virtualization Management

• Hybrid & Multi-Cloud Administration: Design, secure, and maintain scalable infrastructure across Azure, AWS, and IONOS Cloud.

• On-Premise Virtualization: Oversee, optimize, and maintain our enterprise hypervisor clusters using VMware vSphere (ESXi/vCenter) and Proxmox VE (KVM/LXC).

• Disaster Recovery & Data Protection: Plan, implement, and test automated backup, recovery, and high-availability strategies across all platforms.

• Infrastructure Automation Concepts: Understand and support Infrastructure as Code (IaC) workflows (Terraform/Ansible) to streamline server provisioning, configuration management, and patching.

Enterprise Networking & Security

• Network & Connectivity Management: Design, configure, and troubleshoot complex network architecture involving Cloud VPCs, Site-to-Site IPsec VPNs, VLAN segmentation, DNS, DHCP, and firewalls.

• Traffic Management: Manage load balancing, ingress routing, and perimeter security to ensure high availability and zero-trust access principles.

Qualification Checklist

• Operating Systems: Advanced, expert-level proficiency in and/or .