Senior Systems Administrator

About the role

VT-ARC, a technical services and applied research company, fosters a culture marked by four primary values: Teamwork, Integrity, Excellence, and Service. Our staff is enthusiastic about solving tough problems through teamwork and a fun work environment. We strive for excellence in all projects and recognize achievements through service/merit awards. We also promote a sense of community, applying staff and institutional resources to serve our country.

About You

You are a Senior-Level Systems Administrator with extensive experience in commercial, government, and regulated environments. Your expertise includes Microsoft 365, Active Directory, Azure/Entra ID, Windows Server, virtualization, networking, endpoint management, and cybersecurity technologies. You lead infrastructure modernization, cloud, and security initiatives while being hands-on with deployment, troubleshooting, automation, documentation, and operational support. You translate business requirements into secure, scalable, and supportable technology solutions that enhance reliability, compliance, and user experience.

Duties/Responsibilities

• Administer, maintain, and secure Windows and Linux Server environments across physical, virtual, and cloud infrastructure.
• Administer and manage enterprise security, networking, monitoring, systems, and network management platforms.
• Administer Active Directory, Entra ID, Exchange, SharePoint, Intune, and Teams.
• Configure and maintain Group Policy, DNS, DHCP, file services, identity management systems, and enterprise authentication services.
• Perform system monitoring, patch management, backup validation, performance tuning, and capacity planning.
• Deploy operating systems, applications, security baselines, and patches across enterprise devices.
• Support hardware lifecycle processes, including provisioning, onboarding, offboarding, and hardware refreshes.
• Support organizational cybersecurity and compliance initiatives by assisting with implementation, monitoring, documentation, and maintenance of security controls aligned with regulatory and contractual requirements.
• Support vulnerability management, endpoint protection, SIEM monitoring, phishing mitigation, and incident response activities.
• Maintain secure system configurations and implement cybersecurity best practices.
• Develop automation solutions using scripting and workflow automation tools.
• Integrate enterprise platforms to improve operational processes and business enablement.
• Develop and maintain technical documentation, SOPs, diagrams, and knowledge base articles.
• Provide tier-3 escalation support and mentor junior IT staff.
• Affiliate with infrastructure modernization, cloud migration, and security improvement initiatives.
• Participate in disaster recovery, contingency planning, and after-hours maintenance activities as needed.
• Ensure security and compliance of the IT infrastructure.
• Provide user education and training.
• Participate in technical research and development to enable continuing innovation within the enterprise infrastructure.
• Monitor and troubleshoot system performance and issues.

Desired Education, Certification, Skills, Capabilities

• Bachelor's degree in Information Technology, Cybersecurity, Computer Science, or related field and eight (8) years of relevant experience, or twelve (12) years of relevant professional experience in place of a degree.
• Expert knowledge and experience managing, configuring, and supporting Microsoft cloud technologies: Azure (IaaS), Azure AD, and Microsoft 365.
• Experience with secure cloud environments, including Microsoft GCC High and AWS GovCloud.
• Experience managing and configuring Cisco firewalls, routers, and switches.
• Familiarity with cybersecurity and compliance frameworks.