Senior Windows System Administrator

Job Description

Job Description

Job Title: Senior Windows System Administrator
Location: Johns Creek, Georgia
Employment Type: Contract to Hire

Overview:
Our client is seeking a seasoned Senior Windows System Administrator to take ownership of maintaining, optimizing, and securing their Microsoft-based infrastructure. This individual will play a critical role in ensuring high system availability, supporting enterprise applications, and leading initiatives to enhance performance, scalability, and automation across the IT environment.

Key Responsibilities:

• Manage, monitor, and maintain Windows Server environments (2016/2019/2022) and Active Directory infrastructure.
• Administer and support Group Policy, DNS, DHCP, and other core Windows services.
• Oversee patch management, system upgrades, and performance tuning to ensure optimal uptime and security.
• Manage virtualization environments (VMware or Hyper-V) and perform regular capacity planning and optimization.
• Implement and support backup, disaster recovery, and business continuity solutions.
• Partner with Security teams to maintain compliance and implement security best practices across all systems.
• Develop automation scripts and tools using PowerShell or similar scripting languages to streamline administrative tasks.
• Provide advanced troubleshooting and escalation support for complex system and application issues.
• Document infrastructure configurations, procedures, and operational standards.
• Mentor junior system administrators and contribute to process improvements and technology roadmaps.

Qualifications:

• Bachelor’s degree in Information Technology, Computer Science, or related field (or equivalent experience).
• 7+ years of experience in Windows system administration in an enterprise environment.
• Strong expertise with Windows Server, Active Directory, and Microsoft 365 administration.
• Experience managing virtualization platforms (VMware vSphere or Microsoft Hyper-V).
• Proficiency in PowerShell scripting and task automation.
• Knowledge of cloud environments (Azure or AWS) and hybrid integrations is preferred.
• Familiarity with security frameworks, patching tools, and monitoring systems (e.g., SCCM, SolarWinds, or equivalent).
• Excellent problem-solving, communication, and documentation skills.