IT Network Administrator (f/m/d)

Isar Aerospace SE; Vaterstetten; On-site; EUR 55,000 - 90,000; Full time

Benefits offered by this job

30 days vacation

Company pension plan

Subsidised lunch

Flexible mobility budget

Rental clothing & laundry

Sport clubs membership

Learning allowance

Childcare allowance

Job summary

Isar Aerospace SE is seeking an IT Network Administrator to maintain, secure, and modernize our global network infrastructure across office, testing, and cloud environments. You will ensure high availability and seamless connectivity while bridging physical networks with software and data initiatives.

You will collaborate with software engineering and data teams to optimize routing, cloud VPC connectivity, and low-latency environments for development pipelines, in a role that values ownership,

Qualifications

• 3–5+ years in Network Administration or related roles.
• Experience with multi-vendor networks and outage recovery.
• Strong analytical and communication skills.
• Networking protocols: TCP/IP, BGP, OSPF, VLAN, DNS, DHCP, NAT, IPsec VPNs.
• Hardware & firewalls: enterprise switches/routers/firewalls/wireless controllers.
• Monitoring tools: Checkmk, Grafana, Wireshark, SNMP-based platforms.
• Automation concepts: Ansible, Terraform, Bash, Python.
• OS familiarity: Linux (Debian/RHEL) and Windows network config.

Responsibilities

• Maintain reliable, high-availability and secure operation of the global IT network.
• Manage devices across vendors: switches, routers, firewalls, WLAN.
• Monitor network stability and traffic to prevent bottlenecks and ensure uptime.
• Provide 1st-3rd line escalation support.
• Analyze outages and perform root-cause analysis.
• Identify bottlenecks and automate support where possible.
• Contribute to global IT infrastructure projects.
• Support developers with reliable network routing and cloud connectivity.

Skills

Network operations

Security

Vendor management

Monitoring

Linux/Windows networking

Tools

Checkmk

Grafana

Wireshark

SNMP

Ansible

Terraform

Bash

Python

Job description

Mission Brief

As an IT Network Administrator you will play a crucial role in maintaining, securing, and modernizing our network infrastructure. In this role, you will ensure high availability and seamless connectivity across our office, testing, and cloud environments, bridging physical network infrastructure with our software and data initiatives.

Your role in our Space Mission

Network Administration & Operations

• Network Operations & Security: Ensure the reliable, high-availability, and secure operation of our global IT network environment.
• Multi-Vendor Management: Install, configure, optimize, and maintain network devices (switches, routers, firewalls, wireless access points) from various hardware vendors.
• Performance & Monitoring: Actively monitor network stability, bandwidth, and traffic metrics to proactively prevent bottlenecks and ensure uptime.

Incident Resolution & Escalation

• Multi-Tier Support: Provide comprehensive support for network and connected system environments across 1st, 2nd, and 3rd-level escalation tiers.
• Outage & Fault Recovery: Rapidly analyze, troubleshoot, and perform root-cause analysis (RCA) on network outages or faults to restore operative service promptly.
• Process Improvement: Identify workflow bottlenecks, system inefficiencies, and operational friction to implement smarter, more automated support solutions.

Infrastructure Projects & Developer Support

• Infrastructure Delivery: Actively participate in the design, planning, and execution of global IT infrastructure and connectivity projects.
• Developer Enablement: Work alongside software engineering and data teams to ensure reliable network routing, cloud VPC connectivity, and low‑latency environments for development pipelines.

What you´ll need to thrive…

• 3–5+ years of hands‑on experience in Network Administration, Systems Administration, or Network Engineering.
• Proven track record of managing multi‑vendor network environments and recovering complex infrastructure from outages.
• Strong analytical, problem‑solving, and communication skills in collaborative technical environments.
• Networking & Protocols: Strong practical understanding of TCP/IP, BGP, OSPF, VLAN segmentation, DNS, DHCP, NAT, and IPsec VPNs.
• Hardware & Firewalls: Hands‑on experience configuring and troubleshooting enterprise switches, routers, firewalls, and wireless controllers across major vendors.
• Monitoring & Diagnostics: Experience utilizing network monitoring tools (e.g., Checkmk, Grafana, Wireshark, or SNMP‑based platforms) for traffic analysis and diagnostics.
• Automation & Scripting (Conceptual): Solid conceptual understanding of Ansible, Terraform, Bash, or Python —ability to read, understand, run, and troubleshoot existing scripts and playbooks used for network automation and deployment.
• Operating Systems: Familiarity with Linux (Debian/RHEL) and Windows network configuration and troubleshooting.

Nice to have…

• Experience working in a dynamic, fast‑paced environment (e.g., startup, scale‑up, or rapidly growing enterprise).
• Relevant Certifications: Cisco Certified Network Associate/Professional (CCNA/CCNP), Juniper Networks Certified (JNCIA/JNCIS), or equivalent network engineering credentials.

Join a team where IT support is recognized as a critical service, user experience is a priority, and problem-solving is at the heart of everything we do.
We´re looking for specialists who are excited by ownership, motivated by technical excellence, and driven to deliver reliable support to users every day. Don´t worry if your experience doesn´t match every single qualification.

Benefits

• Employee Participation Program: Share in our success through our virtual company share program
• 30 days of vacation: Enjoy the days off to relax and recharge
• Company pension plan: Secure your future with our company pension plan, featuring a 20% employer contribution after the probation period
• Subsidised lunch: Stay energised with delicious, subsidised lunches every day
• Flexible mobility budget : Travel your way with a choice between a fully financed Deutschlandticket, JobRad bicycle leasing, FINN JobAuto, or a fuel allowance
• Rental clothing with laundry service: Enjoy hassle‑free workwear with our convenient rental clothing and laundry service
• Sport Clubs membership: Stay fit with our sponsored sports club memberships (EGYM Wellpass)
• Individual learning allowance: Grow your skills with an individual learning budget granted after the probation period
• Childcare allowance: Receive a childcare allowance for your non‑school‑age children
• And Much More! Discover additional perks and benefits when you join our team.

We are Isar Aerospace and we are at the forefront of New Space building a modern space business to enable faster, better and cheaper access to space.

Our mission is to help democratise space and use it for good in order to improve life on Earth now and for the future generations.

We are a fast‑growing company aiming to provide sustainable and environmentally friendly launch solutions for small and medium‑sized satellites and constellations into Low Earth Orbit. The company is privately funded by world‑leading technology investors with strong commitment and support and our team is made of driven and talented people with a real passion for space innovation.

We’re making rockets in a way that hasn’t been done before disrupting a traditional industry. If you are up for the challenge, want to work on cutting‑edge projects and be part of a team changing the world for better, come, join us and launch your career!

Want to find out more about us?

www.isaraerospace.com

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Disclaimer

Isar Aerospace SE is an equal‑opportunity employer committed to fairness and inclusivity. We do not prioritize any specific religion, gender, nationality, or background. Due to security clearance requirements, affiliations with countries listed under § 13 para. 1 no. 17 SÜG may affect the application process. All qualified applicants are encouraged to apply.