Senior System Administrator
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Role in brief
Social Discovery Group is seeking a Senior System Administrator to oversee a complex infrastructure supporting over 500 million users. Candidates with strong experience in Microsoft and VDI environments, particularly in AD migrations, should consider applying.
About the role
As a Senior System Administrator at Social Discovery Group, you will manage a large-scale infrastructure, ensuring smooth operation for a vast user base across multiple brands. Your responsibilities will include daily administration of Active Directory, DNS, and DHCP, as well as handling AD domain migrations and load-balancing solutions.
You will work within a collaborative team, focusing on upgrading legacy systems and supporting VDI and terminal server farms. Success in this role will be measured by your ability to maintain system reliability and efficiency while adhering to service level agreements in incident and request handling.
Skills that matter here
- Active Directory: You will manage day-to-day administration and oversee domain migrations.
- VDI: Experience with VDI solutions is crucial as you will support and replace existing systems.
- Linux: Hands-on experience with Linux distributions like Ubuntu and CentOS is required for system management.
- Load balancing: You will rebuild and manage load-balancing stacks using nginx and HAProxy.
- Hyper-V: Knowledge of Hyper-V and VMware ESXi is essential for managing virtual infrastructures.
- Incident handling: You will be responsible for incident and request handling within service level agreements.
Who this role suits
- A candidate with over five years of experience in Microsoft and VDI infrastructure.
- Someone who is comfortable with hands-on technical work and enjoys solving complex problems.
- An individual who can effectively communicate in English at a B1 level or higher.
- A proactive team player who can manage multiple tasks and priorities in a dynamic environment.
From the employer
Key Responsibilities:
- Active Directory, DNS, DHCP, PKI, Group Policy — day-to-day administration
- AD domain migration to a new forest, replacing Citrix VDI with an alternative solution, rebuilding the load-balancing stack (nginx, HAProxy, keepalived/VRRP)
- Supporting VDI and terminal server farms, managing certificates
- Upgrading legacy Windows servers, decommissioning outdated systems
- Incident and request handling within SLA, on-call rotation
Requirements:
- 5+ years working with Microsoft and VDI infrastructure
- Hands-on experience with AD domain/forest migration (ADMT, SID History, phased migration with minimal downtime)
- Production experience with VDI or terminal server platforms
- Linux (Ubuntu, AlmaLinux, CentOS/RHEL), load balancing, Hyper-V/VMware ESXi
- English B1 or above
Questions about this role
Is this position remote?
Yes, this role is fully remote.
What level of experience is required?
Candidates should have over five years of experience in Microsoft and VDI infrastructure.
How do I apply for this role?
Interested candidates can apply through the Social Discovery Group website.
✓ Apply here in a minute. Your application and answers go straight to the hiring person, so you never land in a spam pile.