Senior IT System Engineer - Infrastructure Specialist

Senior IT System Engineer Infrastructure Specialist

Zero Trust Security principles

Key Responsibilities

• Windows Server Administration:

  Deploy and maintain on-premises and Azure-based Windows Servers; Linux administration (e.g., CentOS) is a plus.

• Cloud Services:

  Operate and manage Azure-based infrastructure, including Azure Arc for hybrid management.

• Core Infrastructure Services:

  Maintain DNS, DHCP, Radius, and file servers.

• Security Hardening:

  Define, deploy, and maintain security hardening policies for Windows and Linux servers, in line with industry best practices.

• PKI Management:

  Operate and enhance the company's Public Key Infrastructure for certificate-based authentication and secure network access.

• Secure Admin Workflows:

  Implement and manage secure administrative access using PAWs, secure protocols (SSH, RDP), and Privileged Access Management (PAM) tools.

• Active Directory:

  Maintain and support both cloud and on-premises Active Directory, including Microsoft Entra ID integration.

• Automation & Configuration Management:

  Use Puppet, PowerShell, Python, and Bash scripting to automate and maintain system configurations.

Qualifications

• Master's degree in Computer Science, Information Technology, or related field.

Required Skills

• Extensive experience managing Microsoft infrastructure, including Windows Server, Microsoft Entra, and Azure.
• Strong background in migrating legacy on-premises systems to the cloud (Azure Arc, cloud identities).

Preferred Skills & Certifications

• Microsoft certifications (SC-100, AZ-104, AZ-140, AZ-900, MS-102, MS-900).
• Additional certifications in security or cloud architecture.
• Strong scripting skills in Python, Bash, and PowerShell.
• Experience with KQL and Microsoft Graph API is a plus.
• Hands-on experience with Active Directory, file servers, Radius, PKI (Public Key Infrastructure), NPS, and NDES.
• Solid knowledge of Windows Server provisioning, vulnerability management, and incident handling.