{"id":2849503,"url":"https://alion.io/job/ionos-staff-software-engineer-fmd-managed-kubernetes","title":"Staff Software Engineer (f/m/d) Managed Kubernetes","company":{"id":51740,"name":"IONOS","domain":"ionos.com","url":"https://alion.io/company/ionos","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":77,"open_postings":11,"ghost_share":0,"stale_share":0.909,"repost_share":0,"time_to_fill_p50_days":34,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Berlin, Germany","Karlsruhe, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":100000,"max_usd":183000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":14},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"GitHub Actions","optional":false},{"name":"GitOps","optional":false},{"name":"Go","optional":false},{"name":"Grafana","optional":false},{"name":"Helm","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Loki","optional":false},{"name":"Prometheus","optional":false},{"name":"Rest API","optional":false}],"status":"closed","first_seen_at":"2026-10-19T11:42:59Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-22T17:13:33Z","board_verified":false,"closed_at":"2026-10-22T17:13:33Z","days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"About IONOS\nAt 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.\nWhat 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.\nReady for your next step? Become part of IONOS and grow with us.\nWe are seeking an experienced Specialist Software Developer to join our Managed Kubernetes team. You'll play a crucial role in developing and maintaining our Managed Kubernetes Product that serves both internal IONOS teams and external customers. This position requires experience with Kubernetes architecture and a strong focus on operational aspects aligned with the principles of CKA (Certified Kubernetes Administrator).\nTasks\nDesign, development, and maintenance of cloud-native applications in Golang (Kubernetes Operators, REST APIs, libraries).\nDesigning and implementing new features to improve our Managed Kubernetes offering.\nContribute to the further development of our service architecture and infrastructure-as-code processes.\nDevelopment and maintenance of the complete DevOps toolchain (Helm Charts, GitHub Actions, GitOps workflows).\nCreation and maintenance of Kubernetes operators, controllers and custom resource definitions (CRDs).\nImplement monitoring, alerting, and observation solutions for Kubernetes workloads; collaborate with cross-functional teams to improve platform reliability and performance.\nQualifications\n3+ years of hands-on experience working with Kubernetes in production environments\nProficiency in Golang development with a track record of delivering production-grade code\nUnderstanding of Kubernetes architecture, API resources, and extension patterns\nKnowledge of container orchestration, networking, and security principles\nKnowledge of CI/CD pipelines and GitOps workflows\nExperience with observability stacks (Prometheus, Grafana, Loki, etc.) for monitoring and troubleshooting\nLinux system administration skills\nWillingness to undergo extended security vetting (SÜ2)\nBenefits\nHybrid working model.\nFlexible working hours through trust-based working hours.\nAt some locations a subsidized canteen and various free drinks.\nModern office space with very good transport connections.\nVarious employee discounts for activities and products.\nEmployee events such as summer and winter parties, as well as workshops.\nNumerous training and development opportunities.\nVarious health offers, such as sports and health courses.\nApplication Note\nWe value diversity and welcome all applications - 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