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Mateo Castro Castro

@mateocastro2

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Junior IT infrastructure specialist skilled in Windows/Linux systems and network troubleshooting.

Colombia

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What I'm looking for

I seek an entry-level to junior infrastructure role where I can apply systems/network troubleshooting, grow with mentorship, contribute to stable operations, and work in an organized, documentation-driven team.

I am a junior IT infrastructure professional with hands-on experience administering Windows and Linux environments, troubleshooting TCP/IP, DNS/DHCP, and supporting user access and authentication workflows. I bring practical lab experience building virtualized networks and implementing Active Directory domains.

In frontline support roles I performed L1 technical troubleshooting under SLA constraints, analyzed incidents with structured diagnostic methodologies, and maintained accurate technical documentation in Confluence and Zendesk. I have experience with Microsoft 365, workstation provisioning, and basic server administration.

I am bilingual (English/Spanish), methodical in root-cause analysis, and committed to continuous learning, demonstrated by home lab projects published on GitHub and recent completion of Cisco Networking Basics and a Mechatronics Engineering degree.

Experience

Work history, roles, and key accomplishments

Technical Support Representative

TaskUs

Sep 2025 - Jan 2026 (4 months)

Performed first-level troubleshooting for system access and authentication, analyzed incidents using structured diagnostics, and maintained Confluence documentation while meeting SLA targets.

Windows Linux Active Directory DNS DHCP TCP IP Confluence

IT Support Provider

Potencia y Tecnología S.A.S.

Feb 2025 - Sep 2025 (7 months)

Provided L1 infrastructure support for Windows workstations, Microsoft 365, printers and network connectivity, resolving DNS/DHCP/TCP-IP issues and documenting configurations and incidents.

Windows DNS DHCP TCP IP LAN WAN Workstation Provisioning Technical Documentation Zendesk

Junior IT Infrastructure

Self Employed

Designed and operated a virtualized lab with Windows and Linux VMs implementing Active Directory, DNS/DHCP, and simulated infrastructure incidents with documented troubleshooting workflows published on GitHub.

VirtualBox Active Directory DNS DHCP Windows Server Ubuntu Troubleshooting GitHub

Education

Degrees, certifications, and relevant coursework

Universidad Autónoma de Occidente

Bachelor of Science, Mechatronics Engineering

2020 - 2025

Activities and societies: Built virtualized labs and conducted infrastructure/home-lab projects; documented configurations and troubleshooting workflows published on GitHub.

Completed a Bachelor of Science in Mechatronics Engineering with coursework covering systems engineering, controls, and applied electronics, concluding in May 2025.