Specialist System Administrator Linux (f/m/d)

We offer you the opportunity to join the leading Spanish company in the IT sector, with more than 25 years of experience and one of the most solid track records as a provider of technological solutions for companies. We are a growing company with more than 400 employees and offices in Logroño, Madrid, Barcelona, Seville, Bilbao and Valencia. Since August 2013, we have been part of the IONOS Group, Europe's leading digitalisation partner for small and medium-sized companies. In short, we are a multicultural team that’s passionate about technology, bringing our professional experience from over a dozen countries: Germany, Argentina, Spain, the United States, France, the Philippines, Italy, Poland, Portugal, the United Kingdom, Romania... We are looking for an Specialist System Administrator Linux for the Hosting Technology team: Key responsibilities • Platform Management: Build, maintain, and optimize large-scale Linux platforms and Ceph storage clusters. • Continuity Support: Provide Level 3 support, working closely with Level 2 teams and participating in on-call rotations (approx. 1 week every 6) after an initial adaptation period. • Knowledge Transfer: Collaborate with colleagues in Cologne (Germany) to absorb institutional knowledge of legacy systems and document critical processes. • Continuous Improvement: Identify performance bottlenecks and propose/implement proactive improvements to the existing architecture. What we'd like to see • Experience: Minimum of 3 years in Linux systems administration, with at least 1-2 years in team leadership or technical management roles. • Storage: Proven experience operating Ceph clusters. • Automation Configuration: Strong command of configuration management tools (Puppet, Saltstack) and orchestration tools (Ansible, Terraform). • Scripting: Advanced proficiency in BASH and Python. • Cloud Virtualization: Hands-on experience with OpenStack. • Observability: Proficiency with monitoring tools such as Prometheus and Grafana. Expectations • Being part of a multidisciplinary team passionate about technology, with an open and dynamic culture, where experimentation and discussion are encouraged to progress at work, always with respect and inclusion. • We offer personalised career plans, annual performance evaluations and programmes to develop skills. • We operate in Spanish and English and therefore provide unlimited language training. We work on international projects and define best practices with United Internet partners. • We have flexible start and finish times, respecting a schedule of meetings in the central part of the morning and a range of work from 7 a.m. to 9 p.m. with a hybrid model in one of our offices (Alcobendas, Valencia, Barcelona, Seville or Logroño). At Arsys 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.