CyberSecurity/SysAdmin

Systems Administrator III
Job Category: Information Technology
Requisition Number: SYSTE002274
Posted: March 18, 2026
Full-Time
On-site
Location: San Antonio, TX 78226, USA
Job Description
Job Title: Systems Administrator III
Clearance Required: Secret
Work Location: Onsite, San Antonio, TX
Key Responsibilities:

Analyze, validate, implement, maintain, and configure current services and tools (examples include Active Directory (AD), System Center Operations Manager, Quest, Dell Quest maintenance tools) to minimize negative impacts to performance and scalability; work with other organizations and MTFs to coordinate operations and support of directory services across the enterprise; sustain and provide advanced enterprise-level support for AD services and functions; document technical solutions as required. Utilize available tools, such as Quest Suite of Tools, to manage schema extensions, sites and services, domains and trusts, Group Policy Objects (GPO) administration and Organizational Unit (OU) administration. In addition, will be responsible for advanced management, support, and optimization of the DHA's MED365 Azure cloud environment.
Support and maintain Active Directory and Entra ID architecture to provide authentication, synchronization, user provisioning, and authorization services for AD and cloud user accounts. Validate data encryption services on desktops and laptops for adherence with DHA and DoD regulations and policies; support deployment and maintenance of new government approved data encryption solutions as they become available.
Manage and monitor Data Encryption services to ensure systems and all supported devices are updated; create, deploy, upgrade, and install data encryption client packages, files, and policies in accordance with maintenance window policies; and provide data encryption services status reports.
Collaborate and support future data encryption projects initiated by DHA and DoD
Using MS SCOM, monitor system uptime availability and maintain the framework for new and existing applications, servers, and services that require monitoring at the enterprise level.
Analyze DHA current enterprise system monitoring implementation and provide a status report before and after remediation actions engineered and executed.
Customize enterprise monitoring rules, alerting, and reporting functions for applicable DHA applications and servers, and produce reports depicting the performance indicators for these applications and servers, such as "uptime" and "downtime."
Maintain disaster recovery capability and procedures and ensure all enterprise monitoring servers are compliant to the latest appropriate DISA STIGs.
Implement digital signature and encryption requirements specified in DoDI 8520.02, "Public Key Infrastructure (PKI) and Public Key (PK) Enabling." Manage, and maintain Public Key Encryption (PKE) and Public Key Infrastructure (PKI) in a Windows environment for compliance.
Support installation and maintenance of physical and virtual servers, enhance efficiency of critical systems, and ensure compliancy with applicable Army, DoD, and industry guidelines and policies (see paragraph 6).
Develop, validate, and document Disaster Recovery (DR) procedures for all supported device types within the on-premise enterprise.
Produce/update checklists, guides and/or standard operating procedures for enterprise monitoring and preventative maintenance.
Prepare After Action Reports for submitted SITREPs, EXSUMs and UDRs.
Manage, maintain, and support the DHA's MED365 Exchange Online environment. This includes tasks such as administering and configuring mailboxes, distribution lists, mail flow, and shared mailboxes. Monitor and troubleshoot email service performance and availability to ensure high reliability and uptime. Support and troubleshoot by providing Tier 3 support for Exchange Online-related issues and coordinating with DHA Engineers and Microsoft support for unresolved problems. They will also collaborate with other IT teams to integrate Exchange Online with other enterprise systems and services and support migration projects. The administrator will generate regular reports on email service performance and maintain detailed documentation of all configurations, changes, and troubleshooting activities.
Manage the eDiscovery processes within the DHA's MED365 Tenant to ensure compliance with legal and regulatory requirements. This involves handling data collection, preservation, processing, review, and production for litigation, investigations, and audits. Coordinates the eDiscovery process, develops and implements policies and procedures, and ensures data integrity and security throughout the lifecycle of electronically stored information (ESI). Reviews, manages review platforms, and tools, assists legal teams with data analysis, and produces ESI in response to legal requests. Ensures that eDiscovery practices adhere to legal and regulatory standards, provide training, and support to internal teams, and continuously seek to improve the efficiency and effectiveness of the eDiscovery program. Responsible for managing and mitigating risks associated with data spillage and leakage, the eDiscovery Administrator will monitor, identify, and respond to incidents involving unauthorized data exposure, ensuring containment and remediation measures are implemented. The administrator will also address phishing attacks and other cybersecurity threats by coordinating with the security team to investigate, resolve, and prevent such incidents.
All other duties as assigned.
Required Qualifications:
Education:

~ BS degree in Information Technology, Cybersecurity, Data Science, Information Systems, or Computer Science, from an ABET accredited or CAE designated institution

Experience/Skills:

• 3+ years of relevant experience
• Active Secret (or above) Clearance

Certification(s):

CompTIA Security+ or similar (Cloud+ or GICSP or SSCP or GSEC)
Microsoft Certified: Azure Administrator Associate or Microsoft Certified: Windows Server Hybrid Administrator Associate
Salary and Benefit Information:
The likely salary range for this position is $75,000 - $113,785 This is not, however, a guarantee of compensation or salary. There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, education and certifications as well as contract provisions regarding labor categories that are specific to the position and could fall outside of this range.
Application Deadline: August 3, 2026
Joining the Alpha Omega team entitles you to participate in all retirement benefits, plans of deferred compensation, health and insurance benefits, and other such benefits as set forth in the company's policy and benefits manuals. See below, to name a few:

• PTO including paid parental, military, and bereavement leave
• Eleven (11) paid Federal holidays, five of which are floating holidays (as designated by the company's holiday schedule each year)
• Health and Dental Insurance (including 100% employer paid premiums for employee coverage under the HDHP health plan)
• Life Insurance, STD/LTD term disability coverage, with employer paid premiums
• 401 (k) plan with a match that is 100% vested after you complete two years of service
• FSA/DFSA/HSA flexible benefit plans
• Annual Tuition & Professional Development Reimbursement benefit

We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.
Our Company:
Alpha Omega is an award-winning solutions provider dedicated to delivering mission-enabling technology and strategic solutions for our customers. Since our founding in 2016, we have grown to over 700 employees nationwide consisting of former operators, technologists, and strategists who bring decades of government and industry experience. They are united by one purpose: ensuring our nation's continued global leadership.
We have a unified operating model providing technical capabilities and solutions for customers across two main business units:

National Security – supporting agencies such as the Department of Homeland Security (DHS), Navy, Air Force, Army, and the Department of State (DOS).
National Resilience – supporting agencies such as Federal Deposit Insurance Corporation (FDIC), Treasury, Health & Human Services (HHS), National Institutes of Health (NIH), National Oceanic and Atmospheric Administration (NOAA) and the United States Department of Agriculture (USDA)
Through strategic partnerships, intellectual property, and relentless drive for innovation, Alpha Omega is shaping the future of government technology. We are proud to be a Virginia Best Places to Work 8 times, an Inc. 5000 honoree 7 times, and a Washington Post Top Workplaces 4 times