Senior Systems Administrator - Cloud, VMware & Security

Visionary-Solutions-LLC; Herndon (VA); On-site; USD 120,000 - 155,000; Full time

Job summary

Visionary Solutions LLC in Herndon, VA is seeking a Senior Systems Administrator to lead enterprise Windows server environments, manage Active Directory and cloud services, and maintain security, backups, and DR.

The role reports to the IT Director and requires 8+ years of IT experience, TS/SCI eligibility, and DoD RMF familiarity. Strong PowerShell and automation skills are preferred.

Qualifications

• Bachelor's degree in computer engineering, computer science, information technology, or related field required; additional work experience and/or education can be substituted and considered in lieu of degree.
• Eight (8) or more years of experience in computer systems, networking and information technology configuration.
• Proof of continued education, such as hardware and/or software certifications (Security+. CISSP, CASP+ CE, CCNA, Azure, AWS, etc.) required.
• Minimum DoDD 8140/8570 certification of Information Assurance Technical (IAT) - level I or Information Assurance Management (IAM) - level III
• Experience with Microsoft 365, Active Directory, Virtual hypervisors (such as Vsphere), Linux/UNIX administration, LAN/WANs
• Experience with software development (Scripting, Python, Java, etc.) preferred/desired.
• Extensive knowledge of cloud, on-premises, and hybrid services, as well as infrastructure and security domains.
• Strong analytical and problem-solving skills, with the ability to identify issues, analyze root causes, and develop practical solutions.

Responsibilities

• Administer and maintain enterprise Windows Server environments.
• Install, configure, monitor, and support physical and virtual server infrastructure.
• Manage Active Directory, Group Policy, DNS, DHCP, and identity services.
• Administer VMware vSphere and Proxmox virtual infrastructure.
• Support Microsoft Azure and Microsoft 365 cloud services.
• Perform operating system upgrades, patch management, and security remediation.
• Monitor system performance, availability, and capacity using enterprise monitoring tools.
• Troubleshoot complex server, storage, virtualization, and operating system issues.
• Maintain enterprise backup, disaster recovery, and business continuity solutions.
• Implement and maintain cybersecurity best practices in accordance with DoD RMF standards.
• Develop PowerShell and other automation scripts to streamline administration and operational tasks.
• Coordinate server builds, migrations, upgrades, and infrastructure refresh projects.
• Create and maintain technical documentation, architecture diagrams, and standard operating procedures.
• Collaborate with network engineers and cybersecurity personnel.
• Participate in scheduled maintenance windows and provide after-hours support as required.
• Mentor junior administrators and provide technical leadership on infrastructure initiatives.

Skills

Windows Server

Active Directory

PowerShell

Cloud services (Azure/M365)

Scripting (Python)

Education

Bachelor's degree in Computer Science / IT

Tools

VMware vSphere

Proxmox

Azure

Microsoft 365

Job description

Visionary Solutions LLC in Herndon, VA is seeking a Senior Systems Administrator to lead enterprise Windows server environments, manage Active Directory and cloud services, and maintain security, backups, and DR.

The role reports to the IT Director and requires 8+ years of IT experience, TS/SCI eligibility, and DoD RMF familiarity. Strong PowerShell and automation skills are preferred.