IT Infrastructure & DevOps Engineer (m/w/d)

ZeroPhase GmbH; Dortmund; Hybrid; EUR 60.000 - 90.000; Vollzeit

Zusammenfassung

ZeroPhase GmbH is looking for a hands-on Infrastructure Engineer to own the technical backbone in Dortmund. You will manage the self-hosted development environment, CI/CD pipelines, and the local AI compute cluster with GPU servers and access control.

The role covers security, network infrastructure, and remote endpoint management for the team. You’ll configure cloud services, implement security hardening, and ensure smooth onboarding and offboarding of accounts and devices.

Qualifikationen

• 3–5 years in infrastructure, DevOps, or systems engineering.
• Experience with self-hosted Git infrastructure (Gitea, GitLab self-hosted, or similar).
• Experience building and maintaining CI/CD pipelines (GitLab CI, Jenkins, Gitea Actions, or similar).
• Comfortable with Linux server administration and network security fundamentals.

Aufgaben

• Own and operate the self-hosted development environment and CI/CD pipelines.
• Manage on-site AI compute cluster, including GPU servers and access control.
• Administer local network and server infrastructure (firewalls, VPN, switches).
• Configure and maintain cloud software stack and remote endpoint management.
• Lead onboarding/offboarding IT workflows and security hardening.

Kenntnisse

Git infrastructure

CI/CD pipelines

Linux admin

Network security

GPU compute environments

Cloud AI services

Remote endpoint management

Security mindset

German language

Tools

Gitea

GitLab self-hosted

Jenkins

GitHub Actions

Jobbeschreibung

You will own the technical infrastructure at ZeroPhase Dortmund. That means the self-hosted development environment, CI/CD pipelines, AI compute cluster, network and server security, cloud service administration, and remote endpoint management for the team. You are not a helpdesk. You are the person who builds and runs the foundation everything else sits on.

What you'll do

Infrastructure

• Deploy, maintain and secure ZeroPhase's self-hosted source code repository and version control infrastructure.
• Build and operate CI/CD pipelines that automate build, test, and deployment workflows for the engineering team.
• Set up, configure and maintain the on-site AI compute cluster: GPU servers, driver stack, job scheduling, and access management.
• Decide which AI workloads run on our local compute versus cloud AI services, and integrate the two where that is the better fit.
• Manage local network and server infrastructure: switches, firewalls, VPN, and physical server hardware.

Security

• Implement and maintain network and server security: intrusion detection, access control policies, patch management, and hardening.
• Ensure infrastructure meets the security standards expected of a defense technology company.
• Monitor systems for vulnerabilities and respond to incidents.

Cloud and endpoints

• Configure and maintain ZeroPhase's cloud software stack: user accounts, permissions, integrations, and service health.
• Manage and protect employee workstations remotely: endpoint management, patching, antivirus, and remote support when things break.
• Own onboarding and offboarding IT workflows: provisioning and decommissioning accounts and devices cleanly and securely.

What we’re looking for

• 3 to 5 years of experience in an infrastructure, DevOps, or systems engineering role.
• Hands‑on experience with self-hosted Git infrastructure: Gitea, GitLab self‑hosted, or similar.
• Experience building and maintaining CI/CD pipelines: GitLab CI, Jenkins, Gitea Actions, or similar.
• Comfortable with Linux server administration. This is a Linux environment.
• Working knowledge of network security fundamentals: firewalls, VPNs, VLANs, intrusion detection.
• Experience with GPU server setup and administration is a strong plus given the AI compute cluster responsibility.
• Some exposure to cloud AI services (e.g. hosted inference or model APIs) is a plus, given the local/cloud AI routing responsibility.
• Remote endpoint management experience: patching, MDM, antivirus deployment.
• Security‑minded by default. You do not need to be prompted to think about least privilege, hardening, or patch cadence.
• Fluent German; solid working English for coordination with Munich.

Bonus: not required

• Experience in a defense, hardware, or regulated tech environment.
• Familiarity with container orchestration: Docker, Kubernetes, or similar.
• Experience administering GPU compute environments for AI or ML workloads.

How the hiring process works

• Intro call. 30 minutes with our recruiting team. We’ll learn about your background, and you’ll learn about the mission.
• Deep dive. A working session with one of our engineers, exploring the application semantics.
• Case study, in Dortmund. A visit to the lab, in person if you can make it or over Teams if you can’t.
• The offer. By now you’ve likely already met our CEO. This round is where we make it official: fast, transparent, and built around the mission.