Senior System Administrator
harriscomputer
Senior System Administrator
onhires· IT Support / SysAdmin
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.
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.
Frequently Asked Questions
Is the salary disclosed for the Senior System Administrator position at onhires?
The salary for this Senior System Administrator role at onhires is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Is the Senior System Administrator job at onhires remote?
Yes, this Senior System Administrator position at onhires is remote, with team members based in Europe (remote). You can work from home or anywhere in the supported regions.
Is the Senior System Administrator role at onhires full-time or part-time?
This is listed as a FullTime position. It is posted as a Senior System Administrator role in the IT Support / SysAdmin department at onhires.
Which team or department does the Senior System Administrator at onhires belong to?
This Senior System Administrator position is part of the IT Support / SysAdmin department at onhires. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior System Administrator position at onhires?
Click the "Apply Now" button on this page. You will be redirected to onhires's official application portal hosted on ashby where you can submit your application directly.
When was the Senior System Administrator job at onhires posted?
This Senior System Administrator position at onhires was posted on Aug 5, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior System Administrator
onhires
You'll be redirected to onhires's official application page on Ashby ATS.