Systems Administrator

Njvc LLC; San Antonio, Northern (TX, KY); Hybrid; USD 85,000 - 105,000; Full time

Job summary

Chenega MIOS is seeking a Systems Administrator to lead administration, maintenance, and optimization of enterprise Windows and Linux server environments in a DoD-aligned security context. The role emphasizes vulnerability management, patching, and incident response across virtual and physical infrastructures.

Responsibilities include automation with Bash/Ansible, system hardening per DISA STIGs, and collaboration with cross-functional teams to ensure reliability and security of mission-critical

Qualifications

• Associates degree in IT, Computer Science, Information Systems, Engineering, or related technical discipline.
• 5+ years of relevant experience.
• Experience with Windows and Linux operating systems.
• DOD IAT Level II Certification is required.
• DOD Top Secret clearance with SCI eligibility.

Responsibilities

• Lead the administration, maintenance, and optimization of enterprise Windows and Linux server environments.
• Install, configure, harden, maintain, and troubleshoot RHEL/Ubuntu/Windows Server across physical and virtual environments.
• Perform vulnerability remediation and system-hardening per DISA STIGs and DoD cybersecurity requirements.
• Develop and maintain backup, recovery, and disaster recovery capabilities for enterprise systems.
• Automate system administration using Bash, Ansible, PowerShell, and related tools.

Skills

Windows and Linux OS experience

DOD IAT Level II Certification

DOD Top Secret clearance w/ SCI

5+ years of relevant experience

Education

Associates degree in information technology or related field

Job description

Summary

Systems Administrator

San Antonio, TX

Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employers core culture? If so, Chenega Military, Intelligence & Operations Support (MIOS) could be the place for you! Join our team of professionals who support large-scale government operations by leveraging cutting-edge technology and take your career to the next level!

We deliver essential technology services to our customers in support of their missions to sustain the national security and economic interest of our nation. SecuriGence is seeking a talented Systems Administrator to help contribute to our success. Come help us solve problems with Innovation through Intelligence.

Responsibilities

• Lead the administration, maintenance, and optimization of enterprise Windows and Linux server environments.

• Administer, maintain, configure, and optimize enterprise Linux server environments, with a primary focus on Red Hat Enterprise Linux (RHEL) and Ubuntu, while supporting Windows Server environments as required.

• Install, configure, harden, maintain, and troubleshoot RHEL, Ubuntu, and Windows Server operating systems across physical and virtual enterprise environments.

• Perform Linux system administration activities including user and group management, file systems, permissions, services, processes, storage, networking, package management, repositories, logging, and system resource management.

• Manage system services and configurations using Linux administration tools and technologies including system, SSH, RPM/YUM/DNF, APT, LVM, and related enterprise Linux utilities.

• Perform system performance analysis, capacity planning, resource management, and troubleshooting to ensure infrastructure availability, scalability, and reliability.

• Deploy, administer, and maintain virtualized server environments utilizing VMware technologies.

• Support system architecture, operating system upgrades, migrations, technology refreshes, and infrastructure modernization initiatives.

• Troubleshoot and resolve complex Linux, Windows, virtualization, infrastructure, and application-related issues across enterprise environments.

• Plan, test, and deploy operating system, application, firmware, and security patches while minimizing operational impact and maintaining system availability.

• Perform vulnerability remediation and system-hardening activities for Linux and Windows systems in accordance with DISA STIGs, DoD cybersecurity requirements, and organizational cybersecurity policies.

• Review vulnerability and compliance findings and remediate identified vulnerabilities, misconfigurations, and security deficiencies.

• Monitor enterprise servers and supporting infrastructure to identify performance, capacity, availability, and security issues and maintain operational readiness.

• Develop, implement, and maintain backup, recovery, business continuity, and disaster recovery capabilities for enterprise systems.

• Automate system administration, configuration management, patching, compliance, and operational tasks using Bash, Ansible, PowerShell, and other scripting or automation technologies.

• Develop and maintain Ansible playbooks, scripts, and standardized configurations to improve consistency, repeatability, security, and operational efficiency across server environments.

• Administer and support Windows Server systems, including Active Directory-integrated services, Group Policy, PowerShell-based administration, patching, system hardening, and troubleshooting.

• Develop and maintain system administration standards, build documentation, configuration baselines, standard operating procedures, troubleshooting procedures, and other technical documentation.

• Maintain accurate system configurations, inventories, operational documentation, and technical records in support of configuration management and cybersecurity requirements.

• Provide technical guidance and support to junior system administrators and other technical personnel as needed.

• Collaborate with network, cybersecurity, storage, backup, cloud, database, and application teams to implement, troubleshoot, and maintain integrated enterprise solutions.

• Evaluate infrastructure and automation technologies and recommend improvements that enhance system security, reliability, performance, manageability, and operational efficiency.

• Participate in incident response, system recovery, maintenance windows, and after-hours troubleshooting activities as required to support mission-critical systems.

• Perform additional duties as assigned in support of team and organizational objectives.

Qualifications

• Associates degree in information technology, Computer Science, Information Systems, Engineering, or a related technical discipline.

• 5+ years of relevant experience.

• Experience with Windows and Linux operating systems.

• DOD IAT Level II Certification is required

• DOD Top Secret clearance w/ SCI eligibility.

Knowledge, Skills and Abilities:

• Experience with Windows and Linux operating systems.

How youll grow

At Chenega MIOS, our professional development plan focuses on helping our team members at every level of their careers to identify and use their strengths to do their best work every day. From entry-level employees to senior leaders, we believe theres always room to learn.

We offer opportunities to help sharpen skills in addition to hands-on experience in the global, fast-changing business world. From on-the-job learning experiences to formal development programs, our professionals have a variety of opportunities to continue to grow throughout their careers.

Benefits

At Chenega MIOS, we know that great people make a great organization. We value our team members and offer them a broad range of benefits.

Learn more about what working at Chenega MIOS can mean for you.

Chenega MIOSs culture

Our positive and supportive culture encourages our team members to do their best work every day. We celebrate individuals by recognizing their uniqueness and offering them the flexibility to make daily choices that can help them be healthy, centered, confident, and aware. We offer well-being programs and continuously look for new ways to maintain a culture where we excel and lead healthy, happy lives.

Corporate citizenship

Chenega MIOS is led by a purpose to make an impact that matters. This purpose defines who we are and extends to relationships with our clients, our team members, and our communities. We believe that business has the power to inspire and transform. We focus on education, giving, skill-based volunteerism, and leadership to help drive positive social impact in our communities.

Learn more about Chenegas impact on the world.

Chenega MIOS News- https://chenegamios.com/news/

Tips from your Talent Acquisition Team

We want job seekers exploring opportunities at Chenega MIOS to feel prepared and confident. To help you with your research, we suggest you review the following links:

Chenega MIOS web site - www.chenegamios.com

Glassdoor - https://www.glassdoor.com/Overview/Working-at-Chenega-MIOS-EI_IE369514.11,23.htm

LinkedIn - https://www.linkedin.com/company/1472684/

Facebook - https://www.facebook.com/chenegamios/

Chenega Corporation and family of companies is an EOE.

Equal Opportunity Employer/Veterans/Disabled

Native preference under PL 93-638.

We participate in the E-Verify Employment Verification Program