Freelancer profile translated to English.
Back to original languageAbout Juan Pedro
Senior Systems Administrator with over 17 years of experience managing critical IT infrastructure in the healthcare sector. Currently responsible for environments serving thousands of users 24/7 in production.
My specialty is designing, implementing, and maintaining VMware virtualization platforms, backup and disaster recovery strategies with Veeam, and Microsoft Windows Server and Linux environments. I also work on Azure migrations and hybrid cloud architecture.
Official training: Official VMware (VCP8-DCV), Microsoft (MCSA), and Linux (LPIC-1) courses.
How can I help you?
— Design and optimization of virtual infrastructure (VMware vSphere)
— Backup, replication, and disaster recovery strategies with Veeam
— Microsoft Azure migration and architecture
— System auditing and hardening (ENS, security)
— Advanced Windows Server and Linux administration
Available for one-off projects, audits, migrations, and specialized technical support. On-site in Madrid or remote.
🌐 jpcasco.com | 📄 jpcasco.com/CV | 💼 linkedin.com/in/jpcasco
Spanish
Native or bilingual
English
Fluent
Can work on-site
Madrid (up to 50km)
Experience
- Tunstall TelevidaSenior Systems Administrator | VMware ExpertTECHJuly 2008 - Today (17 years and 11 months)San Fernando de Henares, MD, SpainSpecialist in Critical Infrastructure and VirtualizationVirtualization and High-Density ComputingDesign and management of VMware vSphere architectures (ESXi 6/7/8 and vCenter). I led critical migrations, improving performance by 20% and ensuring 99.9% availability. Expert in HP C7000 and DELL VRTX hardware, achieving a resilient and optimized infrastructure.Storage and Business ContinuityAdvanced administration of HP Nimble, MSA, and P4000 storage arrays, reducing downtime by 30%. Expert in Veeam Backup & Replication 12, with a 100% success rate in disaster recovery (DR) tests. Implementation of High Availability through VMware HA and Microsoft Failover Cluster.Cybersecurity and Regulatory ComplianceTechnical lead for compliance with ISO/IEC 27001 and ENS (High Category). Specialist in hardening Windows and Linux systems. Centralized management with ManageEngine Endpoint Central, automating critical patching and reducing vulnerabilities across the corporate network.Monitoring and Cloud ServicesZabbix: Comprehensive design of the proactive monitoring system, reducing incident response time by 40%.Microsoft 365: Administration of identities, Exchange Online, SharePoint, and Teams, ensuring collaboration and data governance.Key Milestones:99.9% improvement in critical service availability.Total success in ENS High Level security audits.Drastic reduction in MTTR through real-time intelligent alerts.
- Trantor Advanced TechnologiesSystems AdministratorFebruary 2008 - July 2008 (5 months)Madrid, SpainAdministration of IT infrastructure, application deployment, and workstation management in a corporate environment.Centralized application deployment through Systems Management Server (SMS 2003). Workstation imaging and image generation with Windows PE. Migration of applications and servers, as well as maintenance of the workstation fleet.
- AvaloraSupport TechnicianNovember 2007 - February 2008 (3 months)Madrid, SpainIT technical support and corporate systems management.Management of corporate email accounts. Administration of the Remedy system for ticketing and incident management. Support on AS-400 systems.
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Education
- High - Infrastructure HardeningAlto - Bastionado de Infraestructura
- Pexip Certified Technology Expert Level 22024Pexip Certified Technology Expert Level 2