Brandon Miguel Martinez Castillo
Brandon Miguel Martinez Castillo

IT Infrastructure Engineer and Level 1/2 Technical Support Engineer

Open to offers · Member since 24 Sep 2026
Location
Aguascalientes, Mexico
Desired salary
Confidential
Work preference
Remote Only / Full Time, Freelance
Experience level
Mid

About

Professional summary

I am an Information Technology Engineer with hands-on experience in Level 1/2 technical support, IT infrastructure, networking, and onsite field services.

I troubleshoot hardware, software, Windows, printing, peripheral, connectivity, and end-user issues. I manage tickets, document technical activities, collect evidence, and escalate incidents when required.

I work with Active Directory, Microsoft 365, Windows 10/11, Outlook, Teams, OneDrive, VPN connectivity, endpoint protection, and corporate laptop deployments.

My networking experience includes TCP/IP, IPv4, DNS, DHCP, NAT, LAN/WAN, Wi-Fi, VLAN concepts, switches, routers, access points, ONT devices, structured cabling, and basic firewall administration.

I have supported infrastructure migrations, rack-to-rack relocations, network equipment installations, backup and restoration of router configurations, and onsite technical interventions.

I also have experience with laboratory-system integrations, including Navify, HL7 messages, LIS/HIS interfaces, analyte mapping, functional testing, and end-to-end data-flow validation.

Skills

34 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Data Stores

Design

Experience

Career history

Field Engineer (IDC) Freelance

I provide onsite field services for multiple companies through assigned tickets, including follow-up, technical documentation, evidence collection, and ticket closure. I deliver Level 1/2 support by diagnosing hardware, software, Windows, peripheral, printing, and connectivity incidents, resolving or escalating them according to scope.

I install and commission access points, switches, routers, ONT devices, and structured cabling. I perform rack-to-rack migrations, support Teldat equipment, back up router configurations, validate communication links, collect technical inventory data, and provide remote assistance through RDP, AnyDesk, TeamViewer, and UltraViewer.

LIS/HIS Implementation & Integration Analyst ELABS Services - Carpemor Project

I implemented and integrated laboratory equipment with the Navify platform and configured bidirectional LIS/HIS interfaces. I interpreted HL7 messages, mapped and standardized analytes, and configured interface parameters.

I validated end-to-end data flows during deployment, conducted functional testing, resolved interface-related incidents, performed troubleshooting, and produced technical documentation for the project.

IT Infrastructure & Support Intern Foresight

I administered Active Directory tasks including user and group management, permissions, password resets, domain joins, and basic OU/GPO administration. I configured Windows 10/11 corporate laptops with domain integration, NAS access, BitLocker, BIOS passwords, drivers, Microsoft 365, and corporate software.

I supported Outlook, Microsoft 365, Teams, OneDrive, FortiClient VPN, ESET Endpoint Security, Fortinet Firewall administration, UniFi and Huawei access points, Zebra handheld devices, industrial printers, OLS, SAP, and Compaq/CONTPAQi applications.

Computer & Network Support Technician Freelance

I provided preventive and corrective maintenance for computers and peripherals, including hardware and software troubleshooting, operating system installations, driver installations, and application setup.

I delivered network support, configured IP addressing and basic equipment settings, supported Microsoft 365, and provided end-user technical assistance for desktop and connectivity issues.

Education

Learning history

Universidad tecnológica metropolitana de Aguascalientes

Higher University Technician (TSU), Information Technology - Software Development

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