Senior System Administrator
- Role
- Operations
- Experience
- Senior
- Employment
- Part-time10–15h/week
Open to Anywhere in Europe · UTC+0…UTC+3. Set where you work from to check your eligibility.
No BS summary
Senior Systems Administrator needed for long-term part-time remote role. Must have 7+ years of experience with Windows/Linux servers, Hyper-V/VMware, and server troubleshooting. Requires strong customer-facing skills and data center experience. Availability during 10:00-18:00 CET is important.
Core skills
Required skills
Optional skills
Required languages
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.
What you'll do
- 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.
What they require
- 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.
- 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.
- Rotating on-call coverage by agreement.
OnHires' client is an international digital services company that provides marketing, technology, analytics, and operational support to fast-growing global brands, supporting a rapidly growing iGaming project focused on Latin American markets.