Systems Administrator (All Levels) - TS/SCI w/ FSP
Apex Systems, Linthicum Heights, MD, United States
Systems Administrator (All Levels) - TS/SCI w/ Full Scope Polygraph (FSP)
Location:
Linthicum, MD / Annapolis Junction, MD
Work Model:
100% On-Site
(classified environment; not remote)
Clearance:
Active TS/SCI with Full Scope Polygraph (FSP) required
(must be active/current)
Employment Type:
Contract
We're seeking
Systems Administrators (multiple levels)
to support
mission-critical classified environments
for a large DoD integrator. You'll help design, deploy, secure, sustain, and troubleshoot
Windows and/or Linux
systems, often in
virtualized (VMware)
on-prem environments. Work includes partnering closely with network, security, software, and program teams to maintain high availability and compliance.
Leveling note:
This posting is intended to source
multiple skill levels
(Junior through Principal/SME). Final level/title aligns to experience and technical depth.
What You'll Do (Responsibilities may vary by level)
Core Systems Administration (Windows and/or Linux):
Administer and sustain
Windows Server and/or Linux (RHEL)
systems in a classified environment.
Install, configure, harden, patch, and troubleshoot servers/workstations; monitor performance and reliability; resolve incidents and implement preventive fixes.
Manage user and computer accounts, permissions, and access controls (e.g.,
AD , groups, file permissions, security ACLs).
Support backup/recovery, storage/file systems, capacity planning, and routine maintenance (disk space, log maintenance, etc.).
Virtualization / Infrastructure (as applicable):
Administer
VMware vSphere / ESXi / vCenter
(provisioning, lifecycle, configuration, monitoring, troubleshooting).
Support physical/virtual server environments and coordinate with adjacent infrastructure teams.
Security & Compliance (classified/RMF environments):
Follow strict Information Systems security procedures; maintain audit/logging and support security documentation as required.
Implement and maintain
DISA STIG
configurations; coordinate remediation and document risk/mitigation items (e.g., POA&M support where applicable).
Support system hardening and ongoing compliance aligned to
RMF
practices.
Operations, Documentation, and Customer Support:
Coordinate with network/software/system engineers, ISSM/ISSO partners, desktop teams, project managers, and end users to keep systems operating smoothly.
Document procedures/SOPs, changes, and troubleshooting steps; communicate status to stakeholders.
Evaluate and work with vendors on solutions, components, and issue resolution.
Optional Specialized Responsibilities (based on need):
Splunk administration
(indexers/search heads/deployment servers, dashboards, SPL queries, onboarding data sources).
Endpoint security tooling / monitoring (e.g., HBSS/Trellix), vulnerability scanning workflows, or automation/scripting.
Required Qualifications (Baseline)
Active Top Secret Clearance /SCI with Full Scope Polygraph (FSP) .
Hands-on Systems Administration experience
in
Windows and/or Linux
environments supporting production users/systems.
Experience with at least one of the following, depending on alignment:
Windows Server ,
Active Directory ,
Group Policy
RHEL/Linux administration
VMware (vSphere/ESXi/vCenter)
Comfort working
on-site
in a classified environment (no remote).
DoD 8570 / 8140-aligned baseline certification
(commonly
Security+ CE
or equivalent), if required by the program.
Preferred Qualifications (Add-ons that help you source wider skill mixes)
Experience operating in environments requiring STIG compliance and security documentation support.
Knowledge of basic networking concepts (subnets, routing, VLANs) and troubleshooting cross-team issues.
Storage/SAN familiarity, system imaging/provisioning, and hardware install/refresh experience.
Scripting/automation (PowerShell, Bash, Python) to reduce toil and standardize builds.
Monitoring/logging tools exposure (Splunk, SolarWinds, etc.).
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details.
Everforth Apex Benefits Overview:
Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.
Location:
Linthicum, MD / Annapolis Junction, MD
Work Model:
100% On-Site
(classified environment; not remote)
Clearance:
Active TS/SCI with Full Scope Polygraph (FSP) required
(must be active/current)
Employment Type:
Contract
We're seeking
Systems Administrators (multiple levels)
to support
mission-critical classified environments
for a large DoD integrator. You'll help design, deploy, secure, sustain, and troubleshoot
Windows and/or Linux
systems, often in
virtualized (VMware)
on-prem environments. Work includes partnering closely with network, security, software, and program teams to maintain high availability and compliance.
Leveling note:
This posting is intended to source
multiple skill levels
(Junior through Principal/SME). Final level/title aligns to experience and technical depth.
What You'll Do (Responsibilities may vary by level)
Core Systems Administration (Windows and/or Linux):
Administer and sustain
Windows Server and/or Linux (RHEL)
systems in a classified environment.
Install, configure, harden, patch, and troubleshoot servers/workstations; monitor performance and reliability; resolve incidents and implement preventive fixes.
Manage user and computer accounts, permissions, and access controls (e.g.,
AD , groups, file permissions, security ACLs).
Support backup/recovery, storage/file systems, capacity planning, and routine maintenance (disk space, log maintenance, etc.).
Virtualization / Infrastructure (as applicable):
Administer
VMware vSphere / ESXi / vCenter
(provisioning, lifecycle, configuration, monitoring, troubleshooting).
Support physical/virtual server environments and coordinate with adjacent infrastructure teams.
Security & Compliance (classified/RMF environments):
Follow strict Information Systems security procedures; maintain audit/logging and support security documentation as required.
Implement and maintain
DISA STIG
configurations; coordinate remediation and document risk/mitigation items (e.g., POA&M support where applicable).
Support system hardening and ongoing compliance aligned to
RMF
practices.
Operations, Documentation, and Customer Support:
Coordinate with network/software/system engineers, ISSM/ISSO partners, desktop teams, project managers, and end users to keep systems operating smoothly.
Document procedures/SOPs, changes, and troubleshooting steps; communicate status to stakeholders.
Evaluate and work with vendors on solutions, components, and issue resolution.
Optional Specialized Responsibilities (based on need):
Splunk administration
(indexers/search heads/deployment servers, dashboards, SPL queries, onboarding data sources).
Endpoint security tooling / monitoring (e.g., HBSS/Trellix), vulnerability scanning workflows, or automation/scripting.
Required Qualifications (Baseline)
Active Top Secret Clearance /SCI with Full Scope Polygraph (FSP) .
Hands-on Systems Administration experience
in
Windows and/or Linux
environments supporting production users/systems.
Experience with at least one of the following, depending on alignment:
Windows Server ,
Active Directory ,
Group Policy
RHEL/Linux administration
VMware (vSphere/ESXi/vCenter)
Comfort working
on-site
in a classified environment (no remote).
DoD 8570 / 8140-aligned baseline certification
(commonly
Security+ CE
or equivalent), if required by the program.
Preferred Qualifications (Add-ons that help you source wider skill mixes)
Experience operating in environments requiring STIG compliance and security documentation support.
Knowledge of basic networking concepts (subnets, routing, VLANs) and troubleshooting cross-team issues.
Storage/SAN familiarity, system imaging/provisioning, and hardware install/refresh experience.
Scripting/automation (PowerShell, Bash, Python) to reduce toil and standardize builds.
Monitoring/logging tools exposure (Splunk, SolarWinds, etc.).
Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details.
Everforth Apex Benefits Overview:
Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.