SLFreelancer profile translated to English.
Back to original languageAbout Sergio
Infrastructure & System Administrator Consultant with 15 years of experience optimizing business environments. Specialist in VMware, Windows/Linux, Ansible, and backup solutions (Veritas/Symantec, NAS). I design robust architectures, automate critical tasks, and ensure your business continuity with proven recovery plans. Remote or on-site work, I deliver clear documentation and measurable results from day one. Need a stable, secure, and efficient environment? Let's talk.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Exxis Group S.A.Infrastructure ConsultantSeptember 2024 - Today (1 year and 9 months)The main tasks I perform are:• Monitoring of the entire cloud through monitoring tools (Nagios, Zabbix, Prometheus, SolarWinds, New Relic).• Performing preventive maintenance of operating systems, both Windows and SUSE.• Performing corrective maintenance of Windows and SUSE operating systems.• Performing maintenance of firewall and router network equipment.• Bringing the SLD SAP B1 service online.• Bringing the HANA engine online for our clients.
- Dachser Spain S.A.System AdministratorMay 2022 - September 2024 (2 years and 4 months)In 2022, I had the opportunity to change professional projects and join Dachser Spain S.A., performing functions as both a Systems Engineer and Architect:• Windows System Administrator. Operating systems mostly Windows Server 2016. Also Windows Server 2012 R1. I manage both Active Directory and GPOs.• Linux System Administrator with Red Hat Enterprise Linux 7 and 8 (64-bit) OS. Primarily managing permissions and user management at FTP and SFTP level.• Virtual Infrastructure Administrator set up on two HP chassis with HP BladeSystem c7000 Blade Servers.• VMware Virtualization Systems Administrator. Administration of all virtual machines is done via vSphere.• Citrix (Xen) Virtualization Systems Administrator. XenApp and XenDesktop 7.15 LTSR Cumulative Update 9 (CU9).• Hitachi G400 and G700 Storage Array Administrator.• Oracle, SQL Server, and MySql Database Backup Administrator.• Google Cloud Platform Administrator.• Script management and automation via Ansible AWX.• Software update administrator through Symantec's Altiris program.• Symantec Endpoint Antivirus Administrator.• Management and project development. Also working with scope documents, vendor proposals, and order approvals via SAP.
- COLEGIO DE REGISTRADORES DE ESPAÑABackup, Data Backup AdministratorJanuary 2009 - January 2022 (13 years)In 2009, I joined the data security and storage department of the College of Property Registrars of Spain, performing the following functions:• Online storage administration on production servers, as well as implementation and maintenance of software.• Level II incident resolution.• System virtualization (VMWARE) and Pre-Sales functions for clients in the IT sector. We configure ESXI servers with several virtual machines for the production of the Property Registries.• Information from over 2,000 national servers is stored, mostly Windows Server 2008, 2012, and 2016 versions. We also store backups from Commercial Registries, which are mostly configured under UNIX servers.• We collect backups from the Property and Commercial Registries of Spain. Data restoration tasks are also performed. The software used has always been Symantec Backup Exec, in all its versions (12.5, 2014, 2016, and BE20), later renamed Veritas Backup starting from version 2016. In the Commercial Registries, we also collect data from NetApp and use the Syncback application for correct backup verification.• Technical documentation creation, administration of remote Veritas Backup Reporter, Check MK, and NAGIOS alert systems.• NAS devices for backups are managed and administered, from brands like NetGear, Lenovo, D-Link, QNAP, and Synology. We also configure and administer storage clusters for the Commercial Registries.
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Education
- Administrator Time Navigator v4.2Atempo2012Administrator Time Navigator v4.2
- Windows Server 2008 Administrator - MCITPCeticsa S.A.2011Windows Server 2008 Administrator - MCITP