Senior IT Systems Administrator

ImFusion GmbH; München; Vor Ort; EUR 90.000 - 120.000; Vollzeit

Zusammenfassung

ImFusion GmbH seeks a senior IT Infrastructure Engineer to own and operate our complete IT stack—on-premises, in our data center, and in the cloud—enabling growth. You design, implement, and maintain servers, storage, networking, and workstations, and you automate tasks with Terraform/OpenTofu and Ansible.

Strong Linux and network expertise are essential, with English and German at B2 level, based in Munich with a hybrid work setup.

Qualifikationen

• At least five years of relevant professional experience in systems administration, IT infrastructure engineering, or a comparable role.
• Strong Linux administration skills, including troubleshooting and maintaining production systems.
• Practical experience with container technologies such as Docker or Podman.
• Experience with infrastructure as code and configuration management, for example Ansible or Terraform/OpenTofu.
• Solid knowledge of network architecture and administration, including VLANs, firewalls, routing, and VPN technologies such as WireGuard.
• Experience designing, implementing, and operating on-premises infrastructure and cloud services, including appropriate security controls. Experience with SaaS infrastructure, such as Microsoft 365, is a plus.
• A sound understanding of identity and access management, backup and recovery, and infrastructure hardening.
• A hands-on, independent, and structured way of working, with the ability to take ownership of the full lifecycle of infrastructure topics.
• Proficient English and at least B2-level German.
• Based in Munich or the surrounding area, with the ability to attend the office at short notice when on-site support is required.

Aufgaben

• Design, implement, operate, and maintain infrastructure across on-premises, data center, and cloud.
• Manage lifecycle of servers, storage, networking, workstations, and notebooks.
• Monitor availability, capacity, and performance; troubleshoot and improve bottlenecks.
• Define and maintain identity, authentication, authorization, and access provisioning.
• Automate provisioning and maintenance using infrastructure-as-code and configuration management tools.
• Develop scripts and internal tools to automate tasks and integrate systems.
• Define infrastructure security controls, backups, and recovery procedures.
• Automate workstation provisioning and provide hands-on office IT support.

Kenntnisse

Linux administration

Container technologies

Infrastructure as code

Networking

Microsoft 365 knowledge

Scripting (Python)

Identity and access management

Security hardening

English & German

On-site Munich presence

Tools

Docker

Podman

Ansible

Terraform/OpenTofu

Zabbix

Prometheus

Grafana

OpenTelemetry

Jobbeschreibung

Your mission

You are the owner of our entire IT infrastructure — on-premises, in our co-located data center, and in the cloud — and shape it to enable our company to further grow and succeed.

You manage our hardware infrastructure and office IT, including servers, workstations, notebooks, and networking. This is a senior, hands-on role: you design and improve our infrastructure, and you carry out the technical work yourself.

Your responsibilities

• Design, implement, operate, and maintain infrastructure across on-premises environments, our co-located data center racks, and cloud services, including Microsoft 365.

• Manage the lifecycle of servers, storage systems, networking equipment, workstations, and notebooks, including provisioning, maintenance, upgrades, and decommissioning.

• Monitor system availability, capacity, and performance, particularly across network and storage infrastructure. Troubleshoot issues, identify bottlenecks, and implement improvements.

• Design and maintain identity, authentication, authorization, group membership, and access provisioning processes.

• Automate infrastructure provisioning, configuration, and maintenance using infrastructure-as-code and configuration-management tools such as Terraform/OpenTofu and Ansible.

• Develop scripts and small internal tools or services to automate recurring tasks, integrate systems, and improve operational workflows.

• Define and implement infrastructure security controls, backup and recovery procedures, and measures to maintain service availability and data integrity.

• Automate workstation provisioning and configuration, manage endpoint software and settings, and provide hands-on support for office IT issues. When something needs to be implemented or fixed, you take care of it directly.

Your profile

• At least five years of relevant professional experience in systems administration, IT infrastructure engineering, or a comparable role.

• Strong Linux administration skills, including troubleshooting and maintaining production systems.

• Practical experience with container technologies such as Docker or Podman.

• Experience with infrastructure as code and configuration management, for example Ansible or Terraform/OpenTofu.

• Solid knowledge of network architecture and administration, including VLANs, firewalls, routing, and VPN technologies such as WireGuard.

• Experience designing, implementing, and operating on-premises infrastructure and cloud services, including appropriate security controls. Experience with SaaS infrastructure, such as Microsoft 365, is a plus.

• A sound understanding of identity and access management, backup and recovery, and infrastructure hardening.

• A hands-on, independent, and structured way of working, with the ability to take ownership of the full lifecycle of infrastructure topics.

• Proficient English and at least B2-level German.

• Based in Munich or the surrounding area, with the ability to attend the office at short notice when on-site support is required.

Nice to have

• Experience with monitoring and observability tools such as Zabbix, Prometheus, Grafana, or OpenTelemetry, including alerting and incident diagnosis.

• Experience deploying or operating GPU servers or GPU clusters.

• Proficiency in Python or another scripting language for operational automation.

Why us?

• Technology that matters: Your work provides the reliable infrastructure behind software that enables innovation in medical imaging and helps bring cutting-edge research into clinical practice.
• Ownership instead of micromanagement: Shape our IT infrastructure and standards, take responsibility for improvements, and put your ideas into practice yourself.
• Short decision-making paths: We work pragmatically, collaboratively, and without unnecessary bureaucracy.
• Flexibility: Flexible working hours and a hybrid work model let you balance remote work with the on-site support this role requires.
• A team that supports each other: Join a collaborative, open-minded team where people enjoy working together and helping one another succeed.