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Alejandro Rivera

@alejandrorivera

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I manage Linux, Windows, AWS, and Azure infrastructure for secure, reliable production environments.

Mexico

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What I'm looking for

I'm looking to continue managing secure, reliable Linux, Windows, cloud, network, and production infrastructure, with hands-on troubleshooting and day-to-day systems administration responsibilities.

I've managed Linux and Windows server environments at Concentrix Catalyst across on-premise and cloud infrastructure since 2013.

I administer AWS and Azure servers, maintain Apache, Nginx, and IIS web services, and support VMware-based production environments. My day-to-day work includes monitoring, patching, backups, troubleshooting, and infrastructure maintenance.

I've implemented VPN connectivity, managed firewall configurations and access-control policies, and installed and renewed SSL certificates for applications and web services. I also administer Jira, Confluence, and Bitbucket.

Earlier, I supported office networks, Active Directory, Google Workspace, Office 365, and end-user systems at Orinoco Systems LLC and the Supremo Tribunal de Justicia de Chihuahua.

Experience

Work history, roles, and key accomplishments

Systems Administrator

Concentrix Catalyst

Dec 2013 - May 2026 (12 years 5 months)

• Managed Linux and Windows server environments across on-premise and cloud infrastructure.
• Administered AWS and Azure cloud servers and related infrastructure services.
• Implemented and maintained VPN solutions for secure remote connectivity.
• Installed, configured, and renewed SSL certificates for web services and applications.
• Managed Apache, Nginx, and IIS web server environments.
• Admi

Linux Windows Server AWS Azure VPN Apache Nginx IIS VMWare Docker Jira Confluence Bitbucket DNS

System Administrator

Orinoco Systems LLC

Sep 2011 - Dec 2013 (2 years 3 months)

• Provided help desk and technical support for office users and IT equipment.
• Managed office network infrastructure, including firewall and switch configuration.
• Administered Windows Active Directory environments and ACL configurations.
• Maintained FTP server configuration and general system maintenance tasks.
• Managed Google Workspace (G Suite) and Office 365 environments.
• Supported emplo

System Analyst

Supremo Tribunal de Justicia de Chihuahua

Jun 2007 - Jun 2011 (4 years)

• Provided technical support and help desk assistance to end users.
• Troubleshot hardware, software, and basic network connectivity issues.
• Installed and configured computer equipment and peripherals.
• Supported basic network infrastructure, including structured cabling and connectivity.
• Provided technical support for multimedia and conference room equipment.