Collaborate with the squad to design, develop, and operate highly-available services on Linux, ensuring seamless integration with operational and product requirements.
Take ownership of the full stack — from hardware to application, including configuration management and monitoring — and drive continuous improvement.
Contribute to our open-source projects, such as DIM (github.com/ionos-cloud/dim) and monzero (github.com/ionos-cloud/monzero), and help shape the future of our infrastructure.
Apply rigorous blast-radius and risk assessment to every change you propose, especially when AI tooling is in the loop. This is part of the job, not an afterthought.
Participate in an on-call service rotation, ensuring the smooth operation of our complex infrastructure.

A completed computer science degree or equivalent qualification.
3+ years of practical experience administering 100+ Linux systems (Debian/CentOS/EL) across 3+ data centers.
Experience with monitoring, configuration, VCS, and visualization tools (Icinga2, Puppet, Ansible, git, Grafana).
Understanding of modern software architectures and their deployment (REST, microservices, Docker, CI/CD).
Knowledge of network and infrastructure services (DNS, BGP, VLANs, firewalling, IPv6).
Scripting/programming knowledge (bash, Python, Go, Java, etc.).
Experience with AI-assisted infrastructure development (Copilot, Claude Code, Cursor or similar) — including the lessons learned. We explicitly welcome candidates who have seen AI tooling cause data loss, accidental destruction or production incidents in operational systems. Those experiences are valuable. We are not looking for people who treat AI as a magic wand, and we are not looking for people who refuse to engage with it. We are looking for people who have skin in the game and have learned to reason about blast radius before they hit enter.
Excellent communication skills in English (German is a plus).

Access to local/international trainings, development and growth opportunities, including access to e-learning platforms, covering both technical and soft skills areas;
Modern technologies, product responsibility;
Flexible work schedule;
Hybrid work option;
Medical services package from one of two private providers;
25 vacation days per year;
Substitute days off for public holidays that occur on the weekend;
Meal tickets;
Internal referral program;
Employee anniversary program;
Team events, networking events organized to promote a passionate, creative and diverse culture;
Summerfest and Winterfest parties;
Of course, coffee, soft drinks and fresh fruits are on us in the office.

Specialist System Engineer – DNS, Observability

Key skills