Senior System Administrator (On-Site)

The following states/districts are excluded from this job ad: AK, CA, CO, CT, DC, HI, LA, MA, MN, MO, NE, NV, NH, NJ, NM, NY, ND, OR, PR, RI, VT, WA, WY

Future Need - Actively Interviewing

Are you an experienced IT professional ready to support and secure mission-critical systems? We're looking for a Senior System Administrator who thrives on solving complex technical challenges, optimizing system performance, and maintaining secure, reliable enterprise infrastructure in a dynamic environment.

Location: Joint Pathology Center, 606 Stephen Sitter Ave, Silver Spring, MD 20910

Position Description: 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.

Minimum/General Experience: 5 years of system administration experience

Minimum Education: 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)

Essential Skills/Qualifications:

• 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

General Physical Requirements needed to perform the essential functions of this job may vary based on the location of the assignment . 

• Assignment Location - Joint Pathology Center, 606 Stephen Sitter Ave, Silver Spring, MD 20910
• Sedentary Work - Exerting up to 10 pounds of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull or otherwise move objects. 
• Typing, communicating, repetitive motions. 
• Close visual acuity to prepare and analyze data, view computer monitors and read. May need to view presentation screens and other visual aids in a virtual setting. 
• Inside environmental conditions with protection from outside elements. 

Security : Active DoD Secret Clearance; Ability to obtain DoD Top Secret Clearance as needed

• U.S. Citizenship

DoD Clearance Consists of a review of up to but not limited to:

• Covers 10 year period and in some instances lifetime events
• OPM Security Investigations Index (SII)
• DOD Defense Central Investigations Index (DCII)
• National Agency Check (NAC) records
• FBI name check
• FBI fingerprint check
• Credit report check
• A check of local law enforcement agencies with jurisdiction over the areas where the applicant has lived, worked, or attended school
• Education check- Attendance and Degrees
• Employment verification -may include interviews of supervisors and/or co-workers
• Corroboration of unemployment
• May include reference interviews
• May include interviews of the individual, former spouse (s)
• Confirmation of all residences
• Verification of public record information

Acceptable Credentials

• Tasks/activities include, but are not limited to:

• Ensures full operational capability of JPC information systems, including Windows Server environments (2016, 2019, 2022), Linux-based medical devices, and networked peripherals
• Designs, configures, and maintains DNS, DHCP, Active Directory, and advanced Group Policy environments
• Oversees Microsoft Enterprise Configuration Management (MECM/SCCM) operations
• Deploys, manages, and troubleshoots VMware virtualization environments, including vSphere
• Performs administration and optimization of enterprise storage solutions, including NetApp, OneFS, or equivalent systems
• Ensures virtual and physical infrastructure supports mission performance and scalability
• Performs site-level Cisco networking administration, including VLAN configuration and troubleshooting
• Manages server and application certificates, including TLS/SSL certificate lifecycle and issue resolution
• Implements, validates, and maintains Security Technical Implementation Guide (STIG) compliance across servers and end-user devices
• Tracks, remediates, and reports Information Assurance Vulnerability Management (IAVM)/Information Assurance Vulnerability Alert (IAVA) compliance status to ensure continued Authorization to Operate (ATO)
• Supports Certification and Accreditation (C&A)/Risk Management Framework (RMF) activities as assigned
• Leads system migrations, major hardware and software upgrades, and infrastructure optimization initiatives
• Plans and executes migration of servers and technologies to DoD-approved cloud environments
• Supports integration of specialized systems, including digital medical and imaging platforms, as required
• Develops and maintains system documentation, standard operating procedures (SOPs), diagrams, and configuration baselines
• Provides regular status updates and technical reports to the Contracting Officer (COR) regarding system health, risks, and project progress

Compensation & Benefits: The annual projected pay range for this position is $93,595 - $108,160 with consideration being given to various factors including but not limited to qualifications, experience, job responsibilities, and geographic location.

Oxley Enterprises, Inc. offers a full array of benefits including:

• 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.

Oxley Enterprises®, Inc. is a certified service-disabled veteran-owned (SDVOSB), veteran-owned (VOSB), and woman-owned small business (WOSB) that has 26 years of experience building and delivering quality IT systems and programs. Oxley is ranked in the INC 5000 7 times (2016, 2017, 2018, 2021, 2023, 2024, 2025). Oxley is a 2019 - 2025 Department of Labor HIRE Vets Medallion Award Winner. Oxley is Virginia Values Veterans certified.

All qualified applicants will receive consideration for employment without regard to any status protected by applicable federal, state, or local law.

If you require a reasonable accommodation to apply for a position at Oxley Enterprises, Inc., please send an email to our Human Resources Department at: View email address on click.appcast.io with the following information:

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