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Role Overview

We are looking for a mid-level System Administrator to join our team. This role will be responsible for managing, supporting, and improving client IT environments that include Windows, Linux, and virtualized platforms (Hyper-V and Proxmox). The ideal candidate is a proactive and analytical professional with a solid background in system administration and a passion for problem-solving.

Key Responsibilities

System Administration & Maintenance

  • Install, configure, and maintain Windows and Linux servers (on physical and virtual environments).
  • Administer Hyper-V and Proxmox virtualized environments.
  • Ensure systems are patched, secure, and performant.

Application Management

  • Manage the deployment, configuration, and ongoing support of client-hosted applications (e.g., web platforms, ERPs, CRMs).
  • Ensure availability, performance, and security of hosted applications.
  • Coordinate with vendors or development teams for updates, integrations, and troubleshooting.

Monitoring & Automation

  • Design and implement monitoring solutions (e.g., thresholds, alerts, dashboards).
  • Automate repetitive tasks using Bash or Python.

Client Infrastructure Support

  • Provide day-to-day operational support for client systems.
  • Manage networking equipment (routers, switches, firewalls) as needed.
  • Ensure compliance with SLAs for incident response and resolution.

Documentation & Reporting

  • Maintain detailed documentation of configurations, processes, and troubleshooting steps.
  • Prepare system health and availability reports.

Incident Management & Support

  • Respond to and resolve infrastructure-related incidents.
  • Provide on-call and remote support for high-priority or after-hours incidents when required.

Key Skills & Competencies

Solid knowledge of:

  • Windows Server and Linux systems
  • Virtualization (Hyper-V and Proxmox)
  • Networking fundamentals (IP addressing, routing, firewalls)

Experience writing scripts in Python and Bash

Familiarity with system monitoring and log analysis tools (e.g., Zabbix, Nagios, Prometheus — or willingness to implement)

Strong troubleshooting and problem-solving skills

Excellent documentation and communication skills

Ability to work independently and manage multiple priorities

Preferred Qualifications

  • Certifications: CompTIA (A+, Network+, or Linux+), Cisco (CCNA), o
  • ages: Portuguese (required), English (intermediate or better)

HOW TO APPLY

Ready to apply? Send your CV to careers@sarifostech.com with the subject “System Administrator Application”