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Javier AlvarezJA

Javier Alvarez

Linux System Administrator | Docker | Enterprise Environment

€250/day
Segovia, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Javier

Linux system administrator specializing in enterprise critical environments. Primarily working with Linux servers and Docker containers in on-prem infrastructure, helping companies maintain stable, secure, and well-organized systems without needing to migrate to the cloud.

I focus on practical solutions: maintenance, basic automation, containerization of existing services, and system hardening. Ideal for companies needing reliable technical support without a full-time in-house administrator.

Specialties
Linux Server Administration (Debian/Red Hat/HP-UX/AIX/Ubuntu)
Docker and Docker Compose
Containerization of existing services
Basic hardening and security
Backups and monitoring
Incident resolution
Critical enterprise environments (on-prem)
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • KABEL - AVANADE - ISOIN
    IT SYSTEMS ADMINISTRATOR TECHNICIAN
    June 2022 - June 2025 (3 years)
    Almeria, Spain
    • - Unix Systems Administration
    ◢ • L3 Incident Resolution
    ◢ • Maintenance of Red Hat, HP-UX, Oracle Linux, and Centos servers (Various versions)
    ◢ • Maintenance of Veritas, ServiceGuard, and Exadata clusters
    • - Unix Project Management
    ◢ • Deployment of servers with VMware
    ◢ • Server upgrades and installation of packages and software
    ◢ • Volume and disk management
    • - Application of Security Bulletins (patching and DISA compliance)
    • - Client-side storage administration
    • - Monitoring with Grafana and M360
    • - Script generation with Bash, Ansible, and BSA
  • METRICA
    LINUX SYSTEM ADMINISTRATOR L3
    June 2025 - Today (1 year)
    Vallelado, CL, Spain
    • - Unix Systems Administration
    • • L3 Incident Resolution
    • • Ticketing management with ServiceNow
    • • Linux Server Maintenance
    • • Server maintenance with VMware
    • • Server upgrades and installation of packages and software
    • • Volume and disk management
    • - Script generation with Bash and Tower
    Linux System Administration Hardening VMWARE
  • DXC TECHNOLOGY
    IT SUPPORT TECHNICIAN
    September 2020 - June 2022 (1 year and 9 months)
    Avilés, AS, Spain
    • - L3 Incident Resolution
    • - Unix and Windows Systems Administration
    ◢ • Windows Server and Red Hat, Centos
    ◢ • Server maintenance
    • - Application Support
    ◢ • SGS
    ◢ • UrbanCode
    ◢ •
    • - SQL DB2
    • - Monitoring with Grafana
    • - Jira

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Education

  • Higher Technician
    RED I.E.S Ribera de Castilla
    2019
    Técnico Superior

Skill set

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