Senior System & Information Security Administrator
Risco Group Bulgaria
Security and Investigations · 501-1,000 employees
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About the role
The role involves taking full ownership of global IT infrastructure, including server management, network maintenance, and security enforcement. Additionally, the administrator will provide high-level technical support and coordinate with external IT vendors.
What they look for
Requirements
Candidates must have at least 7 years of hands-on system administration experience with expertise in Active Directory, Windows/Linux environments, and virtualization. Proficiency in English is required, along with strong practical knowledge of information security and disaster recovery protocols.
Full description
We are looking for a highly autonomous and hands-on Senior System & Information Security Administrator to take full ownership of the company’s global IT infrastructure and security environment.
This is a standalone IT role, responsible for all aspects of the organization’s IT operations, infrastructure, security, and end-user support, while coordinating external IT providers and vendors.
- ystem Administration – Manage and maintain servers (On-prem/ Azure), Active Directory, Entra ID , user accounts, and monitoring systems
- IT Infrastructure & Storage – Maintain networks, hardware, and storage systems to ensure stable and efficient operations
- Technical Support – Provide high-level technical support to end users and resolve infrastructure related issues
- Information Security – Maintain firewalls, endpoint protection, and access control; enforce security policies to ensure system integrity
- Backup & DB Maintenance – Manage backup processes, disaster recovery (DR), and routine MS-SQL Server maintenance
- Vendor Coordination – Professional management of external IT and security vendors when required.
- 7+ years of recent hands-on System Administration experience, with the ability to independently manage a broad IT environment end-to-end.
- Strong and current hands-on experience with Active Directory, including DCs, GPO, DNS, Replication, troubleshooting, and AD security/hardening.
- Strong hands-on experience with Windows and Linux servers in production environments, networking, virtualization (mainly Proxmox), backup and DR.
- Experience with Microsoft 365, Entra ID, hybrid environments, and endpoint/MDM management.
- Strong practical experience in information security, including firewalls, endpoint security, and access control.
- Hebrew – high proficiency; English – very high proficiency.
