Open to opportunities

Mariano RG

@nanoguillen

Infrastructure operations and cybersecurity engineer with 20+ years securing mission-critical environments and modernizing data centers.

Mexico

Message

What I'm looking for

I’m looking for senior roles in IT infrastructure, cybersecurity, and technical operations where I can contribute with leadership, modernization experience, and the management of critical systems.

Senior IT & Cybersecurity leader with 20+ years of experience driving large‑scale modernization programs, building mission‑critical infrastructure, and leading high‑performance technical teams. I specialize in designing and operating secure, resilient, and high‑availability platforms that support complex institutional environments.

My background spans infrastructure architecture, cybersecurity strategy, data center leadership, secure communications, digital forensics, and operational continuity. I have led multi‑year transformation initiatives, strengthened cybersecurity capabilities, and delivered robust technical solutions aligned with organizational objectives.

I combine strategic vision with hands‑on technical leadership, ensuring reliability, security, and efficiency across critical systems. I excel at guiding multidisciplinary teams, managing vendors, and executing complex projects with precision, confidentiality, and long‑term impact.

Experience

Work history, roles, and key accomplishments

Information Technology Manager

Federal Government

Jan 2018 - Aug 2025 (7 years 7 months)

Led cross-functional teams for large-scale data center modernization across storage, compute, cybersecurity, network interconnection, and monitoring. Designed and deployed secure, resilient platforms and improved operational continuity through policy development, automation, and proactive risk management.

data modernization Cybersecurity Operations Infrastructure Monitoring Automation Risk Management Linux Windows Server

Research & Development Manager

Federal Government

Jan 2016 - Jan 2018 (2 years)

Directed an R&D team building cybersecurity solutions for data collection, classification, and analysis to improve operational visibility. Designed architectures and prototypes to address emerging threats.

Threat Analysis Data Classification Security Architecture Prototyping Security Policies Systems Design

Cybersecurity Team Leader

Federal Government

Jan 2014 - Dec 2015 (1 year 11 months)

Led a cybersecurity team focused on penetration testing, malware analysis, and reverse engineering. Improved the organization’s security posture through vulnerability identification, threat analysis, and coordinated incident response.

Penetration Testing Malware Analysis Reverse Engineering Threat Intelligence Incident Response Forensic Investigations Vulnerability Assessment

Forensic Engineer & IT Architect

Federal Government

Jan 2011 - Dec 2013 (2 years 11 months)

Designed and implemented IT infrastructure solutions including LAN/WAN architecture, IP services, and integrated cybersecurity systems. Led a digital forensics laboratory overseeing incident response, evidence preservation, and forensic analysis.

LANs & WANs Digital Forensics Incident Response Forensic Analysis IT Architecture IP Services

IT Architect

Federal Government

Sep 2006 - Dec 2010 (4 years 3 months)

Designed and deployed LAN/WAN networks, IP services, security protocols, and integrated voice systems. Supported operational continuity through structured documentation, monitoring, and technical troubleshooting.

Network Architecture IP Services Security Protocols Operational Continuity Technical Documentation Network Monitoring Troubleshooting Systems & Security

Satellite Systems Engineer

Federal Government

Sep 2003 - Aug 2006 (2 years 11 months)

Managed satellite WAN operations in NOC/SOC environments delivering VoIP and data services to distributed offices. Oversaw QoS, security policies, and daily operations to maintain reliable and secure communications.

Satellite WAN Operations NOC VoIP Services Security Policies Network Operations

Network Engineer

Federal Government

Sep 2000 - Aug 2003 (2 years 11 months)

Managed LAN environments and Windows Server infrastructure including SQL, web, mail, and Active Directory. Implemented security policies and supported daily operations to maintain system reliability.

Windows Server Active Directory SQL Network Security Security Policies System Reliability