Staff Site Reliability Engineer (f/m/d)

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. 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. Ready for your next step? Become part of IONOS and grow with us. 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 devs 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 knowledg.
• 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.