Antonio (Martin) Quevedo martin
Freelance IT Consultant & Technical Content Creator
Experience
Freelance IT Consultant & Technical Content Creator
Virtualizando | Blog & IT Services
- Freelance provider of specialized IT services in server virtualization (VMware, Proxmox), systems administration, and remote support for small businesses, independent professionals, and corporate environments.
- Manage secure infrastructures with a focus on automation, operational continuity, and performance, working closely with both international technical teams and direct clients.
- Led vulnerability remediation projects, server optimization, and hybrid infrastructure deployments.
- Provide support in Spanish, English, and German.
- Author of the technical blog virtualizandoando.com and content creator on YouTube and Instagram, with a community of over 3,000 IT professionals.
Vulnerability Analyst
Barclays Bank PLC
During my tenure, I was responsible for the comprehensive prevention, auditing, and management of system-level vulnerabilities within the infrastructure of the German division. I oversaw operating systems such as Windows Server, Linux, and databases, planning migrations ahead of lifecycle or support expiration, and strategically coordinating upgrades to prevent obsolescence and ensure uninterrupted services.
As a key achievement, I designed and implemented strategies to analyze and enhance system vulnerabilities, creating a comprehensive workflow for remediation, patching, and future planning, which significantly reduced vulnerabilities through a structured patching process.
Additionally, I audited hardware using Cormant’s CableSolve for accurate data center inventories and software assets via ServiceNow, improving record precision and implementing preventive corrections.
Lastly, I served as the subject matter expert (SME) for the primion time-tracking system, handling its implementation, maintenance, and migration during a domain switch, while managing budgets, vendor negotiations, and collaboration with HR for seamless operations.
Systems Virtualization Specialist Administrator
SOPRA STERIA
- IT specialist 3rd level engineer for platforms on VMware (ESXi, Horizon), Hyper-V, Citrix, providing administration support to Norway, Denmark, and Spain clients.
- Hardware monitoring and troubleshooting support administration in Cisco UCS, Dell iDRAC, and HPE OneView Onboard iLO Administrator.
- Patching, security updates, and upgrades of physical servers and operating systems with IVANTI, WSUS, IBM Endpoint Manager Console, or PowerShell scripts.
- Follow and solve incidents, system changes, migrations, disaster recovery tests and plans, and request items on ServiceNow and other related CMDB, workflow, and project tracking platforms.
- Write troubleshooting documentation and other related content on internal wiki Atlassian Confluence.
IT Support and Virtualization Specialist Administrator
IBM
- 3rd level specialist for platforms based on Windows 7 under Citrix (XenDesktop, XenApp) and VMware (ESXi, Horizon, vSphere, Mirage).
- Implemented Wintel server tasks under Windows 2008/2012 server environments, including installation, maintenance, repair, and optimization of domain controllers, Active Directory, Group Policy Management, DNS, DHCP; and created PowerShell and Power Query reports.
IT Servers Support Systems Specialist
AZKEN MUGA
- Final client’s workstation, server, and virtualization graphics systems engineer using big data computing with Nvidia graphic cards (K2, Tesla, Geforce and Quadro) and Intel Phi for render farms, scientific and mathematics computation clustering.
- Managed virtual machines for architecture and 3D modeling render powered by GPU and high-performance needs based on Citrix (XenApp, XenDesktop) or VMware (ESXi, vCenter Server, Horizon, Hyper-V, Mirage).
- Maintained software environments under Windows 2008/2012 R2, Linux CentOS, and Fedora, and performed system tasks installation, maintenance, repair, and optimization of domain controllers, Active Directory, Group Policy Management, DNS, DHCP, and PowerShell.
IT Support and VMware Specialist
TEAM TRAINING SOLUTIONS
- Supported application and maintenance under VMware ESXi and vCenter Server with Windows 7 and Server 2008 and provided external client system support for TTS Knowledge Studio software.
Database Administrator
GFI INFORMÁTICA
- Implemented and maintained Siemens Selene Medical database system.
- Developed web-based solutions in Java with SQL and Oracle databases.
- Provided user support on new version upgrades with preset queries and performed daily maintenance for present and future error prevention.
IT Support
IBM
- Provided technical updating solutions, network maintenance, and user on-site and remote support.
- Supported banking projects with Alitalia, Banco Santander, Bancaribe, and Banco Mercantil on-site at offices and airport, including printers, check readers, handhelds, desktops, laptops, and blackBerry phones.
- Managed Windows XP, Windows 2000/2003 Server, Active Directory, Wi-Fi and cordless networks.
IT Support
Alfatech C.A.
- Provided HP & IBM channel services for hardware, software, servers, storage technologies, plotters, and printer installation and configuration support, as well as desktop and laptop on-site and remote support services.
Summary
I offer personalized IT services including server administration, network security, system audits, and temporary technical support to ensure operational continuity during staff transitions or project peaks.
Antonio Quevedo Over the past six years, I’ve specialized in vulnerability analysis for enterprise environments, while also sharing insights as a content creator on virtualizandoando.com, YouTube, and Instagram, reaching an engaged community of over 3,000 followers. Whether optimizing remote infrastructure, securing systems, or virtualizing platforms, I provide efficient and scalable solutions tailored to modern IT needs.
Skills
- Virtualization And Systems: Proxmox Ve, Synology Server Administration, Vmware, Hyper-v, Linux (Centos, Redhat).
- Cloud & Monitoring: Basic Aws, Zabbix.
- It Documentation And Management: Jira, Confluence, Wordpress (Blog Management).
- Media & Content Creation: Final Cut Pro, Video Tutorials, Blog Writing.
- Other Platforms: Macos For Enterprise Support And Administration.
Languages
Education
Antonio Jose de Sucre University Institute of Technology
Computer Technical Engineer · Caracas, Venezuela
Certifications & licenses
Google Cloud Computing
Google Actívate
VMware Certified Professional 6.5 – Data Center Virtualization (VCP6-DCV)
VMware
CISCO Ccna Networking (1st. Level)
CISCO
SQL Database Management And Design
SENA Online
Basic Web Design Dreamweaver Cs5
APROCOBA
Similar Freelancers
Discover other experts with similar qualifications and experience
Senior System and Cloud Engineer
Azure Architect
Ansible Automation, Windows Third Level Support
Consultant / Project Manager
Managing Director; Senior IT Infrastructure & Cybersecurity Consultant
Global IT Infra & OT Cybersecurity Engineer / Manager
Server Migration Consultant
Senior Security Architect
Technical Product Owner
System and Endpoint Hardening
Project planning and implementation of a 95 kWp PV system
IT Consulting / IT Rebuild
Lead Project Manager
DevOps Engineer in the DevOps Team
System Engineer – VMware, Veeam
IT Consulting Project Management / Engineering Subproject Management
Senior Project Manager S4HANA in the Energy Sector
IT Freelancer
Managing Director and Senior Consultant
Senior Consultant Database Administration and SQL
Network Security Architect
Information Security Consultant
Senior ICT System Engineer
IT Services - Support & Automation
Freelancer
Server Administrator
Senior System Engineer Microsoft
Acting Partner
Client Management Support / Onsite Support
