Working time
Type of contract
Spoken languages
Professional experience
Educational level
Remote working
We are looking for an experienced Windows System Administrator to administer, maintain and secure Microsoft-based infrastructure environments.
You will be responsible for the availability, performance, security and evolution of Windows Server environments and associated infrastructure services.
You will work closely with infrastructure, network, security, cloud and application teams to ensure reliable and secure IT operations.
Key Responsibilities
- Install, configure, administer and maintain Windows Server environments.
- Manage Active Directory, including users, groups, Organizational Units, permissions and Group Policies.
- Design, implement and troubleshoot Group Policy Objects (GPOs).
- Administer core Microsoft infrastructure services including DNS, DHCP and certificate services.
- Manage server access, privileges and security configurations.
- Perform operating system patching, upgrades and lifecycle management.
- Monitor system availability, performance, capacity and reliability.
- Troubleshoot complex Windows infrastructure and system issues.
- Automate repetitive administrative tasks using PowerShell.
- Manage virtualised Windows environments.
- Participate in backup, restore and disaster-recovery activities.
- Implement infrastructure security hardening and remediation actions.
- Analyse system logs and support security/infrastructure incident investigations.
- Maintain technical documentation, procedures and configuration records.
- Participate in infrastructure migrations, upgrades and transformation projects.
- Provide Level 2/Level 3 technical support for complex infrastructure incidents.
- Collaborate with cloud, network, cybersecurity and application teams.
Required Technical Skills
- Strong experience with Windows Server administration.
- Strong knowledge of Active Directory Domain Services (AD DS).
- Strong experience with Group Policy/GPO administration.
- Good knowledge of DNS and DHCP.
- Strong knowledge of PowerShell scripting and automation.
- Good understanding of Windows authentication, permissions and security mechanisms.
- Experience with Windows Server patching, upgrades and lifecycle management.
- Experience with virtualisation technologies such as VMware vSphere or Microsoft Hyper-V.
- Experience with monitoring and troubleshooting Windows Server environments.
- Knowledge of backup and disaster-recovery principles.
- Good understanding of networking fundamentals including TCP/IP, DNS, routing, firewall concepts and load balancing.
- Good understanding of infrastructure security and system-hardening practices.
- Experience working with ticketing and ITSM environments.
Nice to Have
- Experience with Microsoft Azure.
- Knowledge of Microsoft Entra ID and hybrid identity environments.
- Experience with Microsoft 365 administration.
- Knowledge of Microsoft Intune.
- Experience with Microsoft Configuration Manager (MECM/SCCM).
- Experience with WSUS or enterprise patch-management solutions.
- Knowledge of Active Directory Certificate Services (AD CS) / PKI.
- Experience with Microsoft Defender technologies.
- Knowledge of Azure Automation, infrastructure automation or configuration-management solutions.
- Familiarity with Ansible or Terraform.
- Experience with monitoring solutions such as SCOM, Azure Monitor, Splunk, Elastic or similar tools.
- Experience working with high-availability and business-critical infrastructure.
Profile
- Bachelor’s degree in Information Technology, Computer Science, Engineering or equivalent professional experience.
- Typically 5+ years of experience in Windows systems administration or Microsoft infrastructure engineering.
- Proven experience supporting complex or enterprise Windows environments.
- Strong troubleshooting and analytical capabilities.
- Experience working within structured IT operations and incident-management processes.
- Professional proficiency in English.