HBSS Systems Administrator

This position requires an active DoD Clearance (Secret, Top Secret, Top Secret/SCI) or the ability to be obtain an (Interim Secret, Interim Top Secret)
Because an active or interim DoD clearance is required, U.S. Citizenship is required
Description
ABOUT THE MISSION:
DTRA is a combat support agency enabling the United States (U.S.) Government and its international partners to counter and deter Weapons of Mass Destruction (WMD). The DTRA mission is to safeguard the United States and its allies from global weapons of mass destruction and improvised threats by integrating, synchronizing and providing expertise, technologies and capabilities.
The ITD provides enabling and secure technologies, applications, and services anywhere, to our workforce, mission partners, and external customers to effectively deliver relevant data, information, and situational awareness to successfully perform the Countering Weapons of Mass Destruction and Emerging Threats mission.
This TO supports the ITD's Mission Information Technology (IT-MT) Department. IT-MT enables innovation through an agile approach by providing reliable, resilient, secure, and adaptable mission information technology through implementation of technology solutions that directly support the Agency's mission and enhances communications and information sharing with our partners across the Countering Weapons of Mass Destruction and emerging threats mission space. IT-MT also manages DTRA ABQ regional IT Division responsible for delivering fixed and rapidly deployable IT network environments and engineering solutions providing mission enabling capabilities across all security enclaves in support of RD test events throughout DTRA test ranges.
ABOUT THE ROLE:
TEKsystems is seeking a skilled Senior HBSS Administrator in Fort Belvoir, VA to join the I3TS team supporting DTRA. The I3TS program provides enterprise-wide IT support to enable DTRA's Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA's internal and external mission partners operating in CONUS and OCONUS locations. The candidate will be responsible for ensuring the security and integrity of IT systems by running their Endpoint Security with experience in Trellix and Microsoft Defender. Administrator will also be responsible in applying Security Technical Implementation Guides (STIGs), managing system patches, and overseeing vulnerability management processes. This role supports federal clients in maintaining compliance with the Department of Defense (DoD) and other federal cybersecurity standards.
The candidate will be responsible for identifying points of vulnerability, non-compliance with established Information Assurance (IA) guidelines and regulations and recommend mitigation strategies, along with assisting users as needed in a classified computing environment. The selected candidate must be able to work independently as well as with a team of IT analysts, administrators, and engineers. The position requires excellent communications skills, both verbal and written. The candidate must be able to work in a high-energy environment and adapt to shifting priorities .
**Must possess an active DoD TS/SCI Clearance at time of consideration**
Key Responsibilities:
Continuous upkeep, monitoring, analysis, and response to Information System, network and security events using Endpoint Security tools such as Trellix and Microsoft Defender.
STIG Application and Compliance:
Implement and maintain Security Technical Implementation Guides (STIGs) on Endpoint Security Tools.
Conduct regular STIG compliance checks using tools like SCAP Compliance Checker and STIG Viewer.
Document STIG configurations and remediation actions to ensure audit readiness.
Patching and System Updates:
Manage and deploy operating systems and application patches in accordance with federal patch management policies.
Coordinate patch schedules to minimize operational impact while meeting compliance deadlines.
Verify patch deployment success and troubleshoot any issues arising from updates.
System Hardening:
Harden systems by applying best practices and federal security guidelines to reduce attack surfaces.
Maintain configuration baselines and ensure systems adhere to DoD and NIST standards.
Incident Response Support:
Participates in internal/external security audits/inspections; performs risk assessments and Continuous Monitoring.
Assist in identifying and responding to security incidents related to vulnerabilities or misconfigurations.
Document incidents and contribute to after-action reports for continuous improvement.
Collaboration and Reporting:
Work closely with system administrators, engineering staff, and compliance teams to ensure cohesive security operations.
Prepare detailed reports and briefings for federal clients on STIG compliance, patching status, and vulnerability management efforts.
Develop, implement and enforce Information Security Policies and Procedures.
Tool Utilization:
Trellix and Microsoft Defender.
Skills
Trellix, system hardening, STIG Compliance, Windows, Linux, nist
Top Skills Details
Trellix,system hardening,STIG Compliance,Windows,Linux,nist
Additional Skills & Qualifications
Required Qualifications:
BS bachelor's degree with 8-12 years' experience or 6-10 years of IA experience without a degree. Specific experience, education and training may be considered in lieu of degree.
A Current DoD 8570 baseline certification
HBSS 301 Certification
Understanding of the Risk Management Framework (RMF), NIST, ICD, and CNSS standards.
Familiarity with network technologies (LAN & WAN) and best practices within a classified environment to include crypto and key management
STIG compliance, SCC and STIG Viewer experience, and ACAS expertise.
Expert with Microsoft Windows, Linux, and system virtualization in a secure network environment.
Must be able to work in a constantly changing regulatory environment with short-, mid-, and long-term timelines for remediating any non-compliance
Must be able to work well within a team environment and able to adapt quickly to change
Good writing and verbal presentation skills
Must possess an active DoD TS/SCI Clearance at time of consideration.
Desired Qualifications:
Security+ or CISSP or equivalent
DoD IS knowledge and experience
Security hardening scripting/automation experience
Ansible and or MECM experience
Microsoft OS Certification (MCSE Win 7 or other)
Linux certification (RHCSA, CompTIA Linux, LCFS/LCFE, etc.)
Experience Level
Intermediate Level
Job Type & Location
This is a Contract position based out of Fort Belvoir, VA.
Pay and Benefits
The pay range for this position is $50.00 - $53.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully onsite position in Fort Belvoir,VA.
Application Deadline
This position is anticipated to close on Feb 17, 2026.
>About TEKsystems:
We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.