OnHires
Senior System Administrator (part-time)
- Location
- Remote (Europe), Europe
- Arrangement
- Remote
- Employment type
- Full-time
- Level
- Senior
- Posted
- 5 August 2026 (about a month ago)
Checked 6 days agoApplications go to the employer, never to RoleSprint
About this role
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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About this listing
Published on Ashby under the board identifier Onhires, which is the name the employer’s own job board carries. RoleSprint has not verified the company’s registered or trading name, so it is shown exactly as published rather than tidied up.
RoleSprint is not the employer and not a recruiter. Applications are made on the employer’s own site and never reach us; what RoleSprint does is help you decide whether a role is worth your time and prepare for it if it is.
Published 5 August 2026, last checked 6 days ago. A posting stops being advertised here 90 days after the employer published it, and one the employer takes down is marked closed rather than quietly removed.