Senior System Administrator (On-Site)

Oxley Enterprises • Silver Spring, MD

3d • Onsite

About The Position

The Senior System Administrator provides advanced system administration, technical oversight, troubleshooting, configuration management, and security support services to ensure the operational availability, integrity, security, and compliance of Joint Pathology Center (JPC) information systems. This role requires an experienced IT professional ready to support and secure mission-critical systems, solve complex technical challenges, optimize system performance, and maintain secure, reliable enterprise infrastructure in a dynamic environment.

Requirements

• 5 years of system administration experience
• Bachelors Degree in information technology, computer science, cybersecurity, engineering, or related field
• Active certification meeting Cyber IT/Cybersecurity Workforce (CSWF)/Information Assurance Technician (IAT) Level II requirements (e.g., Security+ CE, CySA +, CND, GSEC, GICSP, SSCP)
• Excellent experience performing system monitoring, troubleshooting, and configuration tasks
• Excellent experience performing routine system administration and maintenance tasks
• Excellent experience with Windows Server environments (2016, 2019, 2022)
• Excellent experience with Linux-based medical devices and network-connected peripherals
• Experience with both physical and virtualized servers (e.g., VMWare)
• Excellent experience with Microsoft Enterprise Configuration Management (MECM/SCCM)
• Experience leading system migrations, modernization efforts, and hardware/software upgrades
• Experience with virtualization environments (e.g., vSphere)
• Experience with enterprise storage solutions (e.g., NetApp, OneFS)
• Experience supporting a federal agency
• Excellent written and verbal communication skills
• Strong problem solving and analytical thinking skills
• Ability to work independently on complex issues
• Active DoD Secret Clearance
• Ability to obtain DoD Top Secret Clearance as needed
• U.S. Citizenship

Responsibilities

• Ensure full operational capability of JPC information systems, including Windows Server environments (2016, 2019, 2022), Linux-based medical devices, and networked peripherals.
• Design, configure, and maintain DNS, DHCP, Active Directory, and advanced Group Policy environments.
• Oversee Microsoft Enterprise Configuration Management (MECM/SCCM) operations.
• Deploy, manage, and troubleshoot VMware virtualization environments, including vSphere.
• Perform administration and optimization of enterprise storage solutions, including NetApp, OneFS, or equivalent systems.
• Ensure virtual and physical infrastructure supports mission performance and scalability.
• Perform site-level Cisco networking administration, including VLAN configuration and troubleshooting.
• Manage server and application certificates, including TLS/SSL certificate lifecycle and issue resolution.
• Implement, validate, and maintain Security Technical Implementation Guide (STIG) compliance across servers and end-user devices.
• Track, remediate, and report Information Assurance Vulnerability Management (IAVM) / Information Assurance Vulnerability Alert (IAVA) compliance status to ensure continued Authorization to Operate (ATO).
• Support Certification and Accreditation (C&A) / Risk Management Framework (RMF) activities as assigned.
• Lead system migrations, major hardware and software upgrades, and infrastructure optimization initiatives.
• Plan and execute migration of servers and technologies to DoD-approved cloud environments.
• Support integration of specialized systems, including digital medical and imaging platforms.
• Develop and maintain system documentation, standard operating procedures (SOPs), diagrams, and configuration baselines.
• Provide regular status updates and technical reports to the Contracting Officer (COR) regarding system health, risks, and project progress.

Benefits

• Medical, dental, vision and prescription drug coverage for you and your family.
• Life Insurance, short-term disability and long-term disability paid for by the Company.
• Supplemental coverages including Accident, Critical Illness, and Hospital.
• Additional Life insurance coverage for you and your dependents.
• 401k plan with various options to select based on your retirement goals.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior