About the Position

Specialist System Engineer for DNS and Observability team (hybrid)

At IONOS, the leading European provider of cloud infrastructure, cloud services, and hosting services, you will work together with a wide range of teams. We are characterized by open structures, a friendly working culture, and flat hierarchies with a strong team spirit. We firmly believe that work and fun are compatible, and offer you the right environment for this. Our constant growth means that we are always looking for new colleagues. Become part of IONOS and grow with us.

Responsibilities

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.

Requirements

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).

Nice to Have

Familiarity with databases, messaging, and metric systems (Apache Kafka, ClickHouse, Apache Cassandra, Metrictank, Mimir).
Experience with Puppet, Ansible, CFEngine, or Salt.
Experience with Copilot, Claude Code, or Cursor.

We Offer

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.
Coffee, soft drinks, and fresh fruits are on us in the office.

About the Company

IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB). The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide. With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools. In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve.

We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age, as well as sexual orientation and identity, physical characteristics, marital status, or any other irrelevant factor subject to applicable law.

Location: Bucharest

Type: Permanent, full-time

Category: Software Development

Work experience: Professionals

Reference ID: 1145

Specialist System Engineer for DNS and Observability team (hybrid)

Job description