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System Administrator, Level III

3 Reasons Consulting, LLC

Jul 3
Secret
Early Career (2+ yrs experience)
IT - Security
San Antonio, TX (On-Site/Office)

System Administrator

Location: San Antonio, TX
Clearance Level: National Agency Check (NAC)/Tier 1 or Position of Trust

Summary:

3 Reasons Consulting is seeking a skilled and motivated System Administrator to support the sustainment, security, and performance of enterprise systems and applications. This role will provide essential support for infrastructure management, system security, virtualization, and backup operations in alignment with ITIL and industry best practices. Candidates must meet IAT II requirements and either hold or be eligible for a Tier 1 background check.

Services to be performed include, but are not limited to:

Manage and troubleshoot server operating systems, infrastructure software, and hardware

Administer the day-to-day integrity, availability, and security of systems and applications

Execute capacity analysis, monitor performance, and maintain the security posture of infrastructure systems

Create and maintain SOPs, maintenance guides, and knowledge base articles

Perform maintenance upgrades to maintain operational and security posture

Assist engineering teams in the evaluation and testing of hardware/software products

Provide support for Virtual Machines (e.g., power cycles, snapshot management)

Ensure STIG compliance and reporting

Create, deploy, and manage Group Policy Objects (GPOs)

Manage patching for servers and workstations, including OS and application updates (e.g., Microsoft 365, Adobe, Java)

Test and troubleshoot system images

Support problem management, including root cause analysis for patching and vulnerabilities

Provide support for Microsoft Endpoint Configuration Manager

Support End User Devices and servers for backup and restoration in collaboration with DHA Enterprise Support staff

Implement and support system and infrastructure backup procedures

Periodically test backup and restoration operations per enterprise directives

Document backup/restore operations for auditability

Recommend process/tool improvements for backup reliability

Coordinate with Government entities to resolve backup/restore issues

Ensure encryption and secure storage of backup media per FIPS and DoD standards

Required Education and Experience:

Bachelor’s degree in Computer Science, Information Technology, or equivalent experience

3+ years of experience with systems administration, patch management, and backup operations

Strong knowledge of virtualization, Microsoft environments, and compliance standards

Required Certification(s):

DoD 8570 IAT Level II (e.g., Security+ CE and relevant Computing Environment certification)

Clearance Level:

Must be able to pass a National Agency Check (NAC)/Tier 1 background check

Benefits at 3 Reasons Consulting:

Company-Paid Benefits:

Short/Long Term Disability

Basic Life Insurance

Direct Payroll Deposit

Leave Accrual

Holidays

401(k) Match

Employee / Company Shared Benefits:

Additional (Voluntary) Life Insurance

401(k)

Medical Coverage

Dental Coverage

Vision Care Plan

Flexible Spending Account Plan

An Equal Opportunity Employer
3 Reasons Consulting is an Equal Opportunity Employer. We are committed to providing a workplace free from discrimination or harassment. We do not discriminate based on race, color, gender, religion, national origin, sexual orientation, age, marital status, veteran status, military status, disability status, or any other characteristic protected by law.
group id: 91091531
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Name HiddenProject Management

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Job Category
IT - Security
Clearance Level
Secret