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Isar Aerospace, a fast-growing space launch company, is seeking a hands-on Manager of Network & Systems Administration to lead, maintain, and modernize their hybrid infrastructure. This is a technical leadership role designed for a senior engineer who excels at architecture, network engineering, and troubleshooting while serving as the primary technical authority for infrastructure.
You will act as both a technical lead and infrastructure owner, bridging on-premise virtualization, enterprise networking, and multi-cloud environments. Responsibilities include:
**Technical Leadership & Operations:**
- Serve as the primary technical subject matter expert (SME) and escalation point for all systems, virtualization, and network architecture
- Oversee infrastructure vendor relationships, license agreements, hardware lifecycles, and service level agreements (SLAs)
- Lead major incident responses, perform root-cause analysis (RCA), and proactively monitor capacity across storage, compute, and network links
**Multi-Cloud & Virtualization Management:**
- Design, secure, and maintain scalable infrastructure across Azure, AWS, and IONOS Cloud
- Oversee, optimize, and maintain enterprise hypervisor clusters using VMware vSphere (ESXi/vCenter) and Proxmox VE (KVM/LXC)
- Plan, implement, and test automated backup, recovery, and high-availability strategies across all platforms
- Understand and support Infrastructure as Code (IaC) workflows (Terraform/Ansible) to streamline server provisioning, configuration management, and patching
**Enterprise Networking & Security:**
- Design, configure, and troubleshoot complex network architecture involving Cloud VPCs, Site-to-Site IPsec VPNs, VLAN segmentation, DNS, DHCP, and firewalls
- Manage load balancing, ingress routing, and perimeter security to ensure high availability and zero-trust access principles
**Requirements:**
- 5+ years of hands-on experience in Systems Administration, Network Engineering, or Cloud Architecture, with demonstrated experience acting in a lead or senior capacity
- Advanced, expert-level proficiency in Debian and/or Red Hat Enterprise Linux (RHEL)
- Deep hands-on expertise with VMware (ESXi/vCenter) and Proxmox VE (KVM/LXC)
- Proven experience managing production environments in Azure and AWS (familiarity with IONOS Cloud is a major plus)
- Strong understanding of TCP/IP, BGP/OSPF routing, DNS, Load Balancing (HAProxy/Nginx), enterprise Firewalls, and IPsec VPNs
- Solid conceptual understanding of Ansible, Terraform, Bash, or Python—ability to read, understand, run, and troubleshoot existing playbooks and scripts
- Experience managing enterprise storage protocols (iSCSI, NFS, SAN) and backup tools (e.g., Veeam or built-in virtualization snapshot engines)
- Proven track record of architecting, deploying, and maintaining hybrid cloud and multi-site network environments
- Strong communication skills with the ability to bridge technical requirements and business objectives
**Bonus Skills:**
- Red Hat Certified Engineer (RHCE) or Linux Foundation Certified Engineer (LFCE)
- Microsoft Azure Administrator (AZ-104), AWS Certified SysOps Administrator, or Solutions Architect
- VMware Certified Professional (VCP) or Cisco Certified Network Associate/Professional (CCNA/CCNP)
