Senior Windows Systems Administrator

Quick Facts

• Role: Senior Windows Systems Administrator

Description

Manage Windows Server environments (2016+) and deploy a security standard for customer environments. Perform application migrations, automate tasks and harden environments using PowerShell, and maintain documentation. You’ll work with core infrastructure and advanced security components such as AD/CA/DNS/Hyper-V/RADIUS/GPO/O365/Entra ID, backups and restores, monitoring, L2 support, plus SIEM/EDR, honeypots, and jump server concepts.

Responsibilities

• 70% Windows Server administration and security standard deployment
• 20% Application migrations, PowerShell automation, and environment hardening
• 10% Documentation
• Operate and support: AD, Certificate Services, DNS, Hyper-V, RADIUS, GPO, O365, Entra ID, backups/restores, monitoring, and L2 support
• Work with advanced security tooling/architecture: tier model, SIEM, EDR, honeypots, jump servers

Requirements

• Minimum 4 years of experience with Windows Servers
• Ability to independently deploy and run: AD, CA, NPS, DNS, DHCP, FS
• Advanced networking knowledge: VLAN, IPsec, SSL VPN, 802.1x, NAT, MFA, SAML
• Advanced Windows security knowledge
• Windows Server certification is a plus (not mandatory)

Benefits

• Salary: 70,000–100,000 CZK gross; indefinite term; HPP or IČO
• Defense-sector projects and security for critical information infrastructure
• Flexible working hours; home office after onboarding; 5 weeks of leave
• Paid overtime, internal training, and new technology opportunities
• Fast, personal decision-making and a paid AI license from day one