Senior System Administrator

OnHires · Europe (remote)

Spotted 6d agoFullTime
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Job description

About this role

Employer-provided description, formatted for easier reading.

About the role

The company provides VPS and dedicated server hosting for FX brokers and traders.

We are looking for a reliable, hands-on Senior Systems Administrator who can support customer-facing infrastructure and contribute to technical improvement projects.

This is a long-term part-time role for someone comfortable working independently with production systems, customer issues, and business-critical infrastructure.

Responsibilities

  • Administer and troubleshoot Windows and Linux servers.
  • Support Microsoft Hyper-V and VMware environments.
  • Diagnose issues with Dell and Supermicro servers.
  • Resolve customer incidents involving VPS, dedicated servers, virtualisation, and connectivity.
  • Maintain Active Directory, DNS, Group Policy, backups, and monitoring.
  • Support data centre infrastructure, storage, and networking.
  • Participate in upgrades, migrations, and infrastructure improvement projects.
  • Maintain clear technical documentation and follow change-management procedures.

Requirements

7+ years of systems, infrastructure, or data-centre experience.

Strong hands-on experience with

  • Windows Server and Linux; Hyper-V and VMware; Dell and/or Supermicro servers; Server and virtualisation troubleshooting.
  • Strong customer-facing experience in technical support or infrastructure operations, with the ability to troubleshoot issues and communicate clearly with both technical and non-technical users.
  • Experience in data centres, hosting, managed services, or another 24/7 infrastructure environment.
  • Good understanding of networking, storage, backup, and disaster recovery.
  • Strong spoken and written English.
  • Reliable, organised, and comfortable taking ownership of issues through resolution.
  • Working hours & availability The role requires approximately 10–15 hours per week , with availability during 10:00–18:00 CET as needed .
  • The schedule is flexible, but the ability to respond and support the team within these hours is important.
  • Nice to have VPS, dedicated hosting, or IaaS experience.
  • iDRAC, IPMI, SAN/NAS or Veeam.
  • PowerShell, Bash, Python, or Ansible.
  • Experience in fintech, trading, telecom, broadcast, or other mission-critical environments.
  • Engagement Independent contractor.
  • Approximately 10–15 hours per week.
  • Remote, primarily during European business hours.
  • Rotating on-call coverage by agreement.
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