Valentin Castellon
Linux System Admin

Certifications

  • RHCSA RHEL7 Certificate #170-035-299
  • CompTIA Security+ Certification | COMP001022084725

Languages

  • English
  • Spanish
  • Portuguese

Profile

Experienced Linux System Administrator with expertise in server management, security, and user support. Certified in Red Hat and CompTIA Security+. Skilled in troubleshooting and solution implementation, seeking a challenging role to apply technical proficiency.

Experience

2019 - Present
NIH/NIAID

Linux System Admin/ Helpdesk Manager

Proficient in providing Tier 1 and Tier 2 support for Windows/Linux/Mac systems, including installation, configuration, troubleshooting, and network printer setup. Experienced in managing IT teams, ensuring timely issue resolution, improving efficiency, and collaborating across departments to enhance IT systems and ensure compliance with standards, resulting in meeting or exceeding SLAs through performance metric monitoring and strategic implementation.

2011 - 2019
Pro-Core Plus

Linux System Admin

Proficient in providing tier 1 and 2 support for Linux workstations, laptops, and servers, including installation, configuration, troubleshooting, and network printer setup on RHEL 6/7. Experienced in performing Network/System Administration duties, security hardening, and patch management on RHEL 6/7 workstations and servers, utilizing tools like VSphere and RedHat Satellite, and scripting with bash shell.

2011 - 2019
Ourisman Honda

PC Hardware Support

Provided tier 1 technical support and troubleshooting for Windows XP, including PC hardware, printers, and network connectivity. Managed daily activities, including user support, system administration tasks, installation, configuration, and maintenance of Windows XP workstations, laptops, and printers, ensuring user access privileges and security.

Professional Skills

Linux

PC

Mac

Python

Interests

  • Drums
  • Music
  • Exercise
  • Dining

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