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Antonio Jose Moya MelladoAJ

Antonio Jose Moya Mellado

Linux and Unix System Administrator

€250/day
Sevilla, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Antonio Jose

I help companies stabilize, secure, and automate Linux infrastructures quickly and reliably.

I have over 15 years of experience as a Sysadmin/DevOps, working with Linux, VMware, Ansible, and cybersecurity (vulnerability analysis and remediation with Qualys).

I can help you with: incident resolution, hardening, automation, performance review, security audits, and priority fixes. This allows you to keep your infrastructure running efficiently while only paying for the time you actually need.

I manage projects for:

Failure diagnosis and resolution on servers

Script review and optimization

Light security and configuration audits

Automation of repetitive tasks and maintenance scripts

If you are looking for specialized, reliable, and flexible technical support, I can help you keep your systems running without complications.
  • Spanish

    Native or bilingual

  • English

    Basic

Remote only
Primarily works remotely

Experience

  • DXC Technology DXC Technology
    Linux and Unix System Administrator
    December 2025 - Today (6 months)
    Coordination of advanced technical activities, ensuring automated deployments and SLA compliance.
    Automation and orchestration of systems using Ansible, AWX, Ansible Automation Platform (AAP), and Puppet, including playbooks, roles, modules, and CI/CD pipelines. Management of RHEL 7/8/9 environments with Red Hat Satellite: system provisioning, patching, configuration control, and complete lifecycles. Optimization of operational processes through technical documentation, automation templates, and infrastructure build procedure review. Advanced training and support to the team in script development, automation, and environment standardization. Integration of platforms and services with other departments, ensuring consistency in critical environments. Implementation of security and regulatory compliance policies, including audits, controls, and vulnerability remediation. Advanced configuration and optimization of Linux servers. Automation of deployments, performance management, and troubleshooting of critical environments.
    Linux Ansible Puppet AWX
  • DXC Technology DXC Technology
    Unix Team Lead
    January 2023 - December 2025 (2 years and 11 months)
    I lead the Unix/Linux team in a banking environment, managing critical infrastructures with a focus on automation, operational efficiency, and high availability. Responsible for documentation management, incident resolution, and interdepartmental collaboration.
    Direction and coordination of the Unix/Linux team in a banking environment, ensuring the continuous operation of critical platforms. Implementation of automation strategies and process optimization to improve efficiency and reduce operation times. Supervision and maintenance of technical documentation, ensuring its update and compliance with internal standards. Management of high-complexity incidents and collaboration with development, security, and operations areas to ensure service stability.
    Linux UNIX Veritas cluster
  • Ingeniería y Soluciones Informát icas S.L.
    IT and Network Systems Administrator
    January 2022 - December 2023 (1 year and 11 months)
    Administration and monitoring of Linux systems, incident resolution, and automation using tools like Ansible. Implementation of security best practices according to CIS and DISA guidelines.
    Comprehensive administration and continuous monitoring of Linux infrastructures to ensure their performance and stability. Diagnosis and resolution of technical incidents, ensuring adequate response times in critical environments. Development and execution of automation processes using Ansible to standardize and streamline operations. Application of security controls and configurations aligned with CIS and DISA guidelines, strengthening the cybersecurity posture of the systems.
    Linux Nagios

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Education

  • Specialization
    Ilerna
    2025
    Especialización Cyberseguridad
  • Higher Technician in IT Systems and Networks Administration
    FOC
    2023
    CFGS Administrador de Sistemas Informáticos y Redes

Skill set

Categories