Job Summary: We are seeking an Open Source Systems Administrator to manage critical services and participate in high-impact projects within an advanced, collaborative technical environment. Key Highlights: 1. Participation in large-scale, high-impact projects 2. Management of critical services in an advanced technical environment 3. Acting as the technical reference within the team Do you have experience working with Linux environments and cloud technologies such as Kubernetes or Docker? Are you interested in participating in large-scale projects within an advanced technical environment? This opportunity may be for you! We are looking for an Open Source Systems Administrator to join a specialized team within a multinational technology company, where you will participate in managing critical services and high-impact projects, working in a collaborative and demanding environment. **Main Responsibilities:** Resolution of incidents and management of requests for critical systems Participation in the implementation of technological projects Acting as the technical reference within the team Preparation of technical documentation and procedures Participation in the rotating on-call team **What We Offer:** * Permanent contract * Location: Central Barcelona, Rambla de Catalunya, 33\. * Remote work: 40% * Flexible working hours. * Annual gross salary up to €48,000 * On-call participation: 1 week per month, with additional financial compensation for availability and interventions * Flexible compensation: Meal card, transport card, nursery vouchers, and collective health insurance. * Employee discounts via the Corporate Benefits platform. * Free training. You will join a company committed to equal opportunities for all individuals, striving to maintain an inclusive, non-discriminatory workplace. We value diversity and will consider all applications regardless of origin, gender, age, religion, sexual orientation, or any other personal characteristic. *“If you are selected as a finalist and chosen to join NexTReT, we will request additional information to process your employment contract, solely to formally verify the information provided in your CV—particularly academic qualifications and relevant professional experience. If you have questions about how to provide partial information, please inform the person responsible for managing your hiring process.* **Mandatory Technical Skills:** * Vocational training (CFGS, MECES 1\) or university degree * Over 5 years’ experience in similar environments * Solid knowledge of open-source operating systems (Ubuntu, RHEL, Rocky Linux) * Experience with Apache, Nginx, HAProxy, and PHP * Experience operating and deploying Kubernetes / OpenShift * Experience with Docker containers * Knowledge of Azure AKS * Experience automating tasks with Ansible * Python programming * Knowledge of Big Data environments (Hive) * Experience with CI/CD (GitLab, Jenkins) * Knowledge of ELK * Teamwork ability, proactivity, and stress tolerance **Desirable Technical Skills:** * Knowledge of scalable internet publishing infrastructures is valued * Experience with caching systems such as Varnish * Experience in the audiovisual sector * Knowledge of Ceph and Proxmox