{"id":2195777,"url":"https://alion.io/job/datasmart-linux-system-administrator","title":"Linux System Administrator","company":{"id":3807100,"name":"Datasmart","domain":"datasmart.pt","url":"https://alion.io/company/datasmart-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Lisbon, Portugal"],"countries":["PT"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":31000,"max_usd":75000,"period":"year","method":"role_country_seniority_unknown","sample_n":40},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"Bash","optional":false},{"name":"CentOS Stream","optional":false},{"name":"Chef","optional":false},{"name":"CI/CD","optional":false},{"name":"Configuration Management","optional":false},{"name":"Debian","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Grafana","optional":false},{"name":"Hyper-V","optional":false},{"name":"Kubernetes","optional":false},{"name":"KVM","optional":false},{"name":"Linux","optional":false},{"name":"Nagios","optional":false},{"name":"Prometheus","optional":false},{"name":"Puppet","optional":false},{"name":"Python","optional":false},{"name":"Red Hat","optional":false},{"name":"Splunk","optional":false},{"name":"TCP/IP","optional":false},{"name":"Terraform","optional":false},{"name":"Ubuntu","optional":false},{"name":"VMWare","optional":false},{"name":"Zabbix","optional":false}],"status":"live","first_seen_at":"2026-09-17T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-09-17T00:00:00Z","board_verified":false,"closed_at":null,"days_open":23,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":23},"description":"Sobre a vaga\nJoin our team as a Linux System Administrator (Hybrid – Porto, Lisbon). You will install, configure, maintain, and troubleshoot Linux servers (physical and virtual) and administer Linux operating systems such as Ubuntu, Red Hat Enterprise Linux, CentOS, Rocky Linux, and Debian.\n\nO que vais fazer\n\nInstall, configure, maintain, and troubleshoot Linux servers (physical and virtual)\nAdminister Linux operating systems (e.g., Ubuntu, Red Hat Enterprise Linux, CentOS, Rocky Linux, Debian)\nMonitor system performance, availability, and capacity to ensure optimal operation\nManage user accounts, permissions, groups, and security policies\nPerform system upgrades, patch management, and operating system maintenance\nConfigure and maintain networking services, including DNS, DHCP, SSH, NFS, and VPNs\nAutomate system administration tasks using scripting languages such as Bash or Python\nManage storage solutions, file systems, backups, and disaster recovery processes\nConfigure and maintain web servers, application servers, and database servers where required\nTroubleshoot hardware, software, networking, and operating system issues\nImplement and maintain monitoring and logging solutions (e.g., Nagios, Zabbix, Prometheus, Grafana, ELK)\nSupport virtualization and cloud environments (VMware, KVM, Hyper-V, AWS, Azure, or Google Cloud)\nManage configuration management and infrastructure automation tools (e.g., Ansible, Puppet, Chef, Terraform)\nEnsure system security by implementing hardening, vulnerability remediation, and access controls\nCollaborate with DevOps, development, networking, and security teams to support infrastructure projects\nCreate and maintain technical documentation, procedures, and system architecture diagrams\nParticipate in incident response, root cause analysis, and on-call support when required\n\nO que é pedido\n\n3+ years (Mid) or 5+ years (Senior) of Linux system administration experience\nStrong experience administering Linux distributions such as Red Hat Enterprise Linux (RHEL), Ubuntu, CentOS, Rocky Linux, or Debian\nSolid understanding of Linux system architecture, kernel, processes, services, and package management\nExperience with Bash scripting\nStrong knowledge of networking concepts, including TCP/IP, DNS, DHCP, routing, firewalls, and VPNs\nExperience with virtualization technologies such as VMware, KVM, or Hyper-V\nFamiliarity with cloud platforms such as AWS, Microsoft Azure, or Google Cloud Platform\nExperience with configuration management and automation tools (Ansible, Puppet, Chef, Terraform)\nExperience with monitoring, logging, and alerting tools (Prometheus, Grafana, Zabbix, Nagios, ELK, Splunk)\nFamiliarity with CI/CD pipelines and DevOps practices\nUnderstanding of security best practices, system hardening, identity management, and vulnerability management\nExperience with backup, recovery, and high-availability solutions\nStrong troubleshooting and problem-solving skills\nExcellent communication and documentation skills\nAbility to work independently and collaboratively within cross-functional teams\nProfessional English proficiency (minimum B2)\nBased in Portugal and available to work in a hybrid model\n\nValorizado\n\nPython is an advantage\nKnowledge of Docker and Kubernetes is a plus\nBachelor’s degree in Computer Science, Information Technology, or a related field (preferred)\nLinux certifications such as RHCSA, RHCE, LPIC, or CompTIA Linux+ are considered an advantage\n\nO que é oferecido\n\nopportunity to integrate into a solid company\nparticipate in projects of high recognition, nationally and internationally\nappealing technological environment\ncareer progression\n\nResumo organizado por IA a partir do anúncio original. 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