Senior DevOps Engineer

Senior DevOps Engineer (m/f/d) – Enterprise Infrastructure & GitLab Platform

Location: Aachen (Hybrid – 2-3 days onsite per week)

Salary: Up to €80,000 + Benefits

I am currently partnering with a leading German cybersecurity company – a true hidden champion with more than 500 employees globally and annual revenues exceeding €100 million.

The organisation develops highly secure, mission-critical solutions used by enterprises, financial institutions, and operators of critical infrastructure worldwide. Due to increasing global demand for cybersecurity, encryption, and quantum-safe technologies, the company is continuing to invest heavily in both its engineering teams and its global infrastructure landscape.

What makes this opportunity particularly unique is the technical environment. Because of the security-critical nature of the products, the business is strategically investing in modern on-premise infrastructure, creating highly complex and technically challenging environments that very few organisations operate today.

As part of a newly established Infrastructure & DevOps organisation, you will play a key role in shaping and evolving the company's global infrastructure and DevOps landscape.

Your Responsibilities

• Plan, design, implement, and automate global IT infrastructure services within an enterprise environment.
• Ensure reliable end-to-end delivery of infrastructure services across servers, virtual machines, storage, networking, and interfaces.
• Take ownership of the enterprise GitLab platform, acting as the internal service provider for development and engineering teams worldwide.
• Administer, configure, and continuously improve GitLab platform services, including GitLab Runners and CI/CD environments.
• Provision, scale, and maintain shared and dedicated GitLab Runner infrastructure to support internal customers and automation initiatives.
• Design, implement, and operate modern container platforms using technologies such as Kubernetes, k3s, Docker, and Podman.
• Standardise, secure, and manage Ubuntu Pro as the organisation's strategic client operating system.
• Provide high-quality 2nd and 3rd level support across global infrastructure and DevOps environments.
• Contribute to the ongoing optimisation and evolution of the global IT and infrastructure architecture.
• Work closely with colleagues across multiple teams and departments, promoting knowledge sharing and delivering excellent internal customer service.

Your Profile

• Minimum of 5 years' experience within a global Infrastructure, Systems Engineering, or DevOps environment.
• Strong hands-on expertise administering Linux server environments alongside Microsoft Windows Server.
• Proven experience administering and supporting GitLab, ideally within complex on-premise enterprise environments.
• Strong understanding of CI/CD pipelines and automation principles.
• Practical experience with GitLab Runners, including deployment, operation, and lifecycle management.
• Hands-on experience with containerisation technologies including Kubernetes, k3s, Docker, or Podman.
• Experience with virtualisation technologies such as Proxmox VE, Ceph, and Proxmox Backup Server is highly desirable.
• Experience managing and hardening Ubuntu-based client environments.
• Structured, analytical approach to solving complex technical challenges.
• Strong communication skills with a collaborative and service-oriented mindset.
• Fluent German and English language skills.

What's on Offer?

• Salary of up to €80,000 depending on experience.
• Hybrid working model with 2-3 days onsite per week in Aachen.
• Ownership of critical GitLab platform and CI/CD infrastructure.
• Opportunity to shape a newly established Infrastructure & DevOps organisation.
• Work with modern technologies including GitLab, Kubernetes, Docker, Proxmox, Ceph, and enterprise Linux platforms.
• Significant influence over infrastructure strategy, architecture, and automation initiatives.
• Exposure to highly secure, business-critical environments supporting customers worldwide.
• Long-term career prospects within a rapidly growing international technology business.

If you enjoy solving complex infrastructure challenges, driving automation initiatives, and working in technically demanding environments where security and reliability are paramount, this could be an excellent next step.