Staff Site Reliability Engineer (f/m/d)

IONOS; Berlin; Hybrid; EUR 80,000 - 120,000; Full time

Benefits offered by this job

Hybrid work

Flexible hours

Canteen subsidy

Good transport access

Employee discounts

Team events

Training & development

Health programs

Job summary

IONOS in Berlin is seeking a Site Reliability Engineer to plan, implement, migrate and operate distributed services. You will work with Linux/Kubernetes environments, automation, and in-house Kubernetes operators to support developers and maintain reliable infrastructure.

The role emphasizes DevOps practices, observability, on-call rotations, and collaboration within an international team. Hybrid work and ongoing training are offered.

Qualifications

• Experience administering complex Linux/Kubernetes services.
• Infrastructure as code and automation are essential.
• Familiarity with observability stacks (Loki, Prometheus, Mimir, Grafana).

Responsibilities

• Provision, operate and migrate distributed, highly available services on Linux/K8s.
• Improve and develop the full stack from hardware to application incl. configuration management and monitoring.
• Develop and maintain in-house K8s operators.
• Support developers to automate operational tasks and rollouts; provide integration interfaces for other teams.
• Administer and troubleshoot our complex infrastructure; participate in on-call rotation.
• Support company goals through lean processes in an agile DevOps environment; operate secure infrastructure.

Skills

Infrastructure topics

Linux/Kubernetes admin

IaC & automation

Open Source mindset

Go/Python development

Observability stacks

English communication

German helpful

Job description

About IONOS

At IONOS, we don't just manage servers – we shape the digital future for more than 6.2 million customers worldwide with our solutions. As Europe's leading hosting provider and a pioneer in independent cloud solutions, we are building next-generation infrastructure – from sovereign cloud architectures and high-performance GPU clusters to integrated AI automation tools.

About IONOS

What drives us is digital sovereignty for Europe and real impact for small and medium-sized businesses (SMBs) as well as large enterprises. We work in agile teams, rely on transparent structures, and believe that excellence and innovation only emerge through true team spirit.

Our team of highly motivated infrastructure service experts is looking for more teammates. As a Site Reliability Engineer, you will plan, implement, migrate and operate together with other SREs our management services.

Our responsibilities begin with the design of a service and we ensure that our operational requirements will make it to the metal together with the product requirements.

In a culture with an emphasis on creative ideas, agile working methods, initiative, and participation you can expect the following tasks:

Tasks

• Provision, operate and migrate distributed, highly available services on Linux / K8s.
• Improve and develop the full stack from hardware over OS to the application including configuration management and monitoring.
• Development and maintain in-house built K8s operators.
• Support our developers to automate operational tasks and rollouts, provide interfaces for integration for other teams.
• Administration and troubleshooting of our highly available and complex infrastructure including participation in an on-call service rotation.
• Support company goals through efficient operating architecture, active lifecycle management and lean processes in an agile DevOps environment, operate certified, security-relevant infrastructure.

Qualifications

• You have a keen interest in infrastructure topics, good network knowledge.
• Hands-on experience with the administration of complex services on Linux/K8s.
• Infrastructure as code and automation are important parts of your own way of working, like us, you are a fan of Open Source, especially Linux.
• Good knowledge with system-level development of highly available software artifacts, written in programming or scripting languages like Go and Python.
• Has worked with observability stacks (Loki, Prometheus, Mimir, Grafana).
• The ability to communicate with an international team fluently in English, German is a benefit.
• Willingness to undergo extended security vetting (SÜ2).

Benefits

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

Application Note

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.