Top 2 Systems Administrator Linux Jobs in San Antonio, TX

Windows Domain Controller Active Directory and Trellix McAfee ePolicy Orchestrator Administrator
FEDITC LLC —San Antonio, TX
- Full-time
- Background check
- Computer Science
- Bachelor of Science
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IT SPECIALIST - SR. IT SPECIALIST - IT Software Licensing Specialist
Southwest Research Institute —San Antonio, TX
- Windows
- High school diploma or GED
- Driver's License
4d

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Windows Domain Controller Active Directory and Trellix McAfee ePolicy Orchestrator Administrator

FEDITC LLC -
San Antonio, TX

Quick Apply

Job Details

Full-time

Qualifications

Data replication
Server optimization
Vulnerability scanning implementation
IT user and group management
GPO
Software deployment
IT system monitoring
System performance optimization
Configuration management
Operating system updates
Automating deployment processes
System maintenance
Patch management
Regulatory Frameworks (Architecture security)
Vulnerability management
System deployment
Windows support
Network monitoring tools
System tuning
Security technology solutions implementations
Security system management
IT security monitoring

Full Job Description

FEDITC, LLC is a fast-growing business supporting DoD and other intelligence agencies worldwide. FEDITC develops mission critical national security systems throughout the world directly supporting the Warfighter, DoD Leadership, & the country. We are proud & honored to provide these services.

Overview of position:

FEDITC is seeking a Windows Domain Controller/Active Directory and Trellix/McAfee ePolicy Orchestrator Administrator to work at San Antonio Tx

Senior Network Engineer/System Administrator with extensive Active Directory, Windows Domain Controller, and Trellix/McAfee ePolicy Orchestrator (ePO) experience. Deep expertise in implementing, managing, and optimizing ePO, Policy Auditor, and other components of the DISA Endpoint Security Solutions suite of tools in DoD environments.

A United States Citizenship and an active Secret DoD Security Clearance is required to be considered for this position.

This is an upcoming opportunity contingent on contract award.

Responsibilities

Key Tasks:

Design, engineer, update, and maintain ePolicy Orchestrator implementations across the enterprise.
Ensure compliance with DISA STIGs, DoD ICAM Reference Design, and DoDI 8520.03.
Design, build, and test configuration items such as task sequences, group policy objects, and system upgrades
Research, analyze, and implement operational solutions across various technologies and operating systems using on-premises Group Policy, cloud-enabled policies, and Kiosk configurations for Windows, Linux, iOS, MacOS, ChromeOS, and Android endpoints.
Design, research, engineer, and deploy strategies for policy distribution in high-security cloud environments.
Provide Site Administrator support and Enterprise monitoring for Group Policy Objects, including initial troubleshooting and the addition of Security Groups to Group Policy Objects.
Expertise in DoD security directives, DISA STIGs, and DHA cybersecurity requirements

Experience/Skills:

Technical Skills and Experience

Active Directory (AD) & Domain Controller (DC) Administration
- 5+ years managing Windows Server environments with Active Directory in large/complex networks.
- Deep understanding of AD replication, Kerberos, LDAP, Group Policy, and FSMO roles.
- Familiarity with performance tuning and troubleshooting on DCs.
Windows Server Administration
- Expertise in Windows Server 2016/2019/2022 internals, registry, event logs, and system services.
- Knowledge of Windows security baselines (CIS, DISA STIG).
- Prior experience deploying enterprise tools on DCs (AV, endpoint protection, vulnerability scanning).
McAfee ePolicy Orchestrator (ePO) & Policy Auditor
- Experience configuring, deploying, and managing agents/policies through ePO.
- Understanding of Policy Auditor content packs, custom checks, and compliance reporting.
Security Compliance & Vulnerability Management
- Ability to map technical checks to compliance frameworks (e.g., NIST 800-53, PCI-DSS, SOX).
- Familiarity with vulnerability and patch management processes.
Performance & Monitoring Tools
- Skilled with Windows PerfMon, Resource Monitor, and event tracing to baseline DC performance.
- Ability to correlate PA scan impact with AD health (replication monitoring, dcdiag, repadmin).
Scripting & Automation
- Proficiency in PowerShell to automate pre-deployment health checks, reporting, and rollbacks.
- Experience integrating scan results into SIEM dashboards or compliance workflows.

Education:

A BS degree in Information Technology, Cybersecurity, Data Science, Information Systems, or Computer Science
Relevant continuing education in enterprise security or systems administration

Certifications:

Microsoft Certified: Cyber Security Architect Expert or
Microsoft Certified: Azure Solutions Architect Expert or
Microsoft Certified: Azure Administrator Associate or
Microsoft Certified: Windows Server Hybrid Administrator Associate

Highly Desired – Any of the following:

CompTIA Security+ CE
CISSP
CISA
GIAC Certified Windows Security Administrator (GCWN) or GIAC Security Essentials (GSEC)
Trellix Certified Product Specialist (ePO)

Clearance:

Active Secret clearance is required.
Must be a United States Citizen and pass a background check.
Maintain applicable security clearance(s) at the level required by the client and/or applicable certification(s) as requested by FEDITC and/or required by FEDITC’S Client(s)/Customer(s)/Prime contractor(s).

FEDITC, LLC. is committed to fostering an inclusive workplace and provides equal employment opportunities (EEO) to all employees and applicants for employment. We do not employ AI tools in our decision-making processes. Regardless of race, color, religion, sex (including pregnancy), sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran, FEDITC, LLC. ensures that all employment decisions are made in accordance with applicable federal, state, and local laws. Our commitment to non-discrimination in employment extends to every location in which our company operates.

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Systems Administrator Linux jobs in San Antonio, TX

Windows Domain Controller Active Directory and Trellix McAfee ePolicy Orchestrator Administrator

IT SPECIALIST - SR. IT SPECIALIST - IT Software Licensing Specialist

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