Ejemplos de CV y plantillas para Systems Administrator — 2025

Los administradores de sistemas son la columna vertebral operativa de toda organización que depende de infraestructura tecnológica. El Bureau of Labor Statistics proyecta demanda continua para este rol, con un salario medio competitivo y crecimiento constante impulsado por la migración a la nube, la ciberseguridad y la infraestructura híbrida. Tu CV debe demostrar uptime, escala de infraestructura gestionada y competencia específica en plataformas.


Ejemplo de CV — nivel inicial

> **Professional Summary** > Systems administrator with 2 years of experience managing Windows Server and Linux environments supporting 500+ users. Maintained 99.95% uptime across 45 physical and virtual servers. CompTIA Server+ and Microsoft Azure Administrator (AZ-104) certified. Proficient in Active Directory, VMware vSphere, and PowerShell scripting.

Ejemplo de CV — nivel intermedio

> **Professional Summary** > Senior systems administrator with 6 years of experience managing hybrid cloud infrastructure (AWS/Azure) supporting 2,400 users across 8 locations. Led migration of 120 on-premises servers to AWS EC2 and RDS, reducing infrastructure costs by 34% ($180K annually). RHCE and AWS Solutions Architect Associate certified.

Ejemplo de CV — nivel senior

> **Professional Summary** > Infrastructure architect and senior systems administrator with 12 years of experience designing and managing enterprise environments supporting 15,000+ users. Directed a team of 8 sysadmins across 3 data centers with 99.99% uptime SLA. Expert in Kubernetes, Terraform, Ansible, and multi-cloud architecture (AWS, Azure, GCP).

Palabras clave ATS

Sistemas operativos: Windows Server (2016/2019/2022) | Red Hat Enterprise Linux (RHEL) | Ubuntu Server | CentOS | macOS Server

Nube e infraestructura: AWS (EC2, S3, RDS, Lambda, CloudFormation) | Microsoft Azure (AZ-104, AZ-900) | Google Cloud Platform (GCP) | VMware vSphere / ESXi | Hyper-V | Kubernetes | Docker | Terraform | Ansible | Puppet | Chef

Redes y seguridad: Active Directory | DNS | DHCP | Group Policy | VPN | Firewall (Palo Alto, Fortinet, Cisco ASA) | SIEM (Splunk, QRadar) | Zero Trust | MFA | SSL/TLS

Certificaciones: CompTIA Server+ | CompTIA Security+ | CompTIA Network+ | Microsoft Azure Administrator (AZ-104) | AWS Solutions Architect | RHCSA / RHCE | VMware VCP | ITIL 4 Foundation | Kubernetes Administrator (CKA)


Errores comunes

  • Listar tecnologías sin contexto de escala. "Gestionó servidores Windows" no dice nada. "Gestionó 120 servidores Windows Server 2019 soportando 2,400 usuarios con 99.95 % de uptime" sí.
  • Omitir métricas de uptime. El uptime es la métrica más importante para un sysadmin. Inclúyelo siempre.
  • No mencionar automatización. Los scripts de PowerShell, Bash, Python o herramientas de configuración como Ansible y Terraform son diferenciadores clave.
  • Ignorar la experiencia en nube. La migración a nube es la tendencia dominante. Si tienes experiencia con AWS, Azure o GCP, debe ser prominente.

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Blake Crosley — Former VP of Design at ZipRecruiter, Founder of ResumeGeni

About Blake Crosley

Blake Crosley spent 12 years at ZipRecruiter, rising from Design Engineer to VP of Design. He designed interfaces used by 110M+ job seekers and built systems processing 7M+ resumes monthly. He founded ResumeGeni to help candidates communicate their value clearly.

12 Years at ZipRecruiter VP of Design 110M+ Job Seekers Served

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