Carlos Greiz
@carlosgreiz
Resuelvo incidencias IT L1–L3 y gestiono sistemas, redes e infraestructura para grandes entornos remotos.
SpainWhat I'm looking for
He dado soporte IT, administrado sistemas y resuelto incidencias L1–L3 durante más de 15 años en entornos presenciales y remotos. Actualmente busco oportunidades remotas internacionales donde pueda aplicar mi experiencia en infraestructura, redes y automatización.
En Theravada Informática lideré instalaciones de control horario para cadenas de restauración, implanté flujos de soporte en Jira y gestioné dispositivos remotamente con NinjaOne. También coordiné y formé equipos técnicos.
He trabajado con Sacyr, NCR, Acrelec, Grupo Solitum y otros clientes de retail y restauración, administrando Windows Server, Active Directory, Azure AD, Office 365, VPN, Hyper-V y redes Cisco. Me motiva usar la tecnología para resolver problemas reales y mejorar continuamente los procesos de soporte.
Experience
Work history, roles, and key accomplishments
Técnico de Sistemas (Nivel 3)
Sacyr S.A.
Mar 2021 - Mar 2023 (2 years)
Provided IT support to engineers and technicians. Administered Azure AD and group policies, managed Office 365 environments and access control, and developed technical procedures.
Field Service Engineer
Tim Servicios Informáticos en la Red S.L.
Mar 2019 - Sep 2020 (1 year 6 months)
Led installations for KFC, Burger King, Papa John's, and Carl's Jr. Configured networks, servers, POS systems, and backups, and trained new technicians.
Field Service Engineer
Acrelec
Aug 2018 - Mar 2019 (7 months)
Installed kiosks and Table Service Systems at McDonald's, KFC, and Burger King. Performed staging and support of POS equipment and provided on-site technical training.
Led installations and staging of servers and POS equipment. Provided level 3 technical support in Microsoft, Cisco, and Office 365 environments, and trained technicians and clients.
Técnico de Sistemas/Redes
Grupo Solitum
Aug 2015 - Dec 2016 (1 year 4 months)
Provided CAU support for McDonald's Spain. Managed Active Directory, VPN, Hyper-V, and Cisco systems, and resolved incidents in offices and restaurants across Spain.
Técnico de Sistemas/Redes
Grupo Konecta
Nov 2011 - Aug 2015 (3 years 9 months)
Provided CAU support and managed incidents using Altitude and NTR Control. Delivered remote technical support to corporate users.
Teleoperador de Perfil Técnico
Optenet
Mar 2009 - Nov 2011 (2 years 8 months)
Provided remote support for managed security services for SMEs and schools. Attended to VIP clients.
Teleoperador de Perfil Técnico
Sitel S.A.
Nov 2008 - Feb 2009 (3 months)
Provided phone support for laptops, desktops, and printers on Windows, Linux, and Mac OS. Handled over 200 calls weekly during Christmas campaign.
Education
Degrees, certifications, and relevant coursework
Microsoft
Microsoft Azure (AZ-900, AZ-204), Cloud Computing
Currently pursuing Microsoft Azure certifications AZ-900 and AZ-204.
Centro de Formación Madrid Sur
Administrador de Redes CCNA Discovery, Network Administration
Completed a 280-hour CCNA Discovery course in network administration.
CEAC
Técnico en Instalación y Mantenimiento de PC y Redes, PC and Network Installation and Maintenance
Completed a technical program in PC and network installation and maintenance.
Universidad de las Américas
Ingeniería en Informática (incompleta), Computer Engineering
2003 - 2004
Pursued a degree in Computer Engineering but did not complete the program.
Tech stack
Software and tools used professionally
Availability
Location
SpainAuthorized to work in
Salary expectations
Social media
Job categories
Skills
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