Open to opportunities

Genaro Sinastra

@genarosinastra

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Linux system administrator and IT support specialist focused on security and automation.

Spain

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What I'm looking for

I seek a hands-on role in systems or security where I can apply Linux administration, automation, and ethical-hacking skills to improve infrastructure resilience and user support.

I am a Linux system administrator and IT support technician with practical training in cybersecurity and ethical hacking. I bring hands-on experience administering Debian-based systems, managing storage (RAID, LVM), and configuring core network services.

Over five years I have provided customer support and technical assistance, resolving platform incidents, offering remote configuration help, and documenting cases via ticketing systems. I emphasize strong troubleshooting skills and maintaining system availability.

My security practice includes network hardening with IPTables, system monitoring and log analysis, vulnerability assessment, and deploying honeypots for attack analysis. I have worked with tools such as Nmap, Metasploit, w3af, John the Ripper, Portsentry, and Scanlogd.

I am passionate about continuous improvement, infrastructure optimization, automation with shell scripting, and contributing to secure, resilient IT environments that support users effectively.

Experience

Work history, roles, and key accomplishments

Current

Linux System Administrator

Current

UTN-FRD / CarreraLinux

Jan 2025 - Present (1 year)

Installed and administered Debian-based systems, managed storage (RAID, LVM) and core services (DHCP, DNS, SSH, NFS, SAMBA, Apache), and implemented monitoring and firewall hardening to improve system availability and security.

Debian RAID DHCP DNS SSH IPtables

Technical Advisor / User Support

Uber Platform

Jan 2023 - Jan 2025 (2 years)

Provided user support and remote troubleshooting for platform incidents, documented cases in ticketing systems, and escalated technical issues to engineering teams to restore service availability.

User Support Ticketing (Jira)Incident Management Escalations Technical Documentation Customer Service Ticketing (JIRA)

Education

Degrees, certifications, and relevant coursework

UTN-FRD / CarreraLinux

Academic Practice, Linux System Administration

2025 -

Activities and societies: Installed and administered Debian systems, managed RAID/LVM, configured DHCP/DNS/SSH/FTP/NFS/SAMBA/Apache/Squid, implemented IPTables, automated tasks with shell scripts, monitored syslog, and performed vulnerability assessment and honeypot deployment.

Academic practice as a Linux System Administrator involving Debian installation and administration, storage management, core service configuration, automation, monitoring, and ethical hacking exercises.