Demo

Senior System Administrator

Seneca Holdings
Patuxent River, MD Full Time
POSTED ON 4/9/2026
AVAILABLE BEFORE 10/4/2026

Great Hill Solutions is part of the Seneca Nation Group (SNG) portfolio of companies. SNG is the federal government contracting business wholly owned by the Seneca Nation. SNG meets mission-critical needs of federal civilian, defense, and intelligence community customers across a variety of domains. The SNG portfolio receives shared services support from its parent company Seneca Holdings and is comprised of multiple companies that participate in the Small Business Administration 8(a) program. To learn more visit www.senecanationgroup.com and follow us on LinkedIn.

The Seneca Nation Group companies offer competitive compensation and a strong benefits package including comprehensive medical and dental care, matching 401K, paid time off, flexible spending accounts, disability coverage, and other benefits that help provide financial protection for you and your family. We pride ourselves on our collaborative work environment and culture which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation.

Great Hill is seeking a Senior Systems Administrator. This position will entail supporting the Naval Air Systems Command (NavAir), in particular, the Digital Analytics, Infrastructure and Technology Advancement (DAiTA) Group and the Naval Leveraging Innovation, Frameworks and Technology (LIFT) and Integrated Modeling Environment (IME) projects. Specifically, this position will provide support to the Navy Lift and IME service desk and user group, documenting the acknowledgement to resolution process system maintenance, outages and upgrades. Additionally, the Senior System Administrator may provide support by installation, configuration, and maintenance of an organization's local area network (LAN), data communications network, operating systems, and physical and virtual servers. Perform System monitoring and verify the integrity and availability of hardware, network, and server resources and systems. Review System and application logs and verify completion of scheduled jobs, including system backups. Analyze network and server resource consumption and control user access. Install and upgrade software and maintain software licenses. May assist in network emulation/virtualization, analysis, planning, and coordination between network and data communications hardware and software. 

This position will be a pivotal member in providing support to the Analytic Master Plan (AMP) Digital Platform (DP) and the Naval LIFT project manager. This position will support implementing and integrating capabilities within the Atlassian Suite (including, but not limited to Jira, Confluence, and Big Picture Enterprise), thus enabling end users to have ability to ‘look left’ (review past analysis to develop new insights and refine hypothesis) and ‘look right’ to understand how project plans are integrated in support of Navy’s budget and force design schedules.

 

System Administrator Roles and Responsibilities

  • A bachelor's degree in computer science, information technology or a related field or 15 years’ experience working in computer science, information technology.
  • Managing and maintaining the file servers
  • OpenShift Cluster Management:
    • Deploy, manage, and maintain highly available OpenShift clusters.
    • Monitor the health and performance of the OpenShift cluster and troubleshoot issues.
  • Utilize the OpenShift CLI (oc) for managing and interacting with the platform.
  • Understanding of Kubernetes concepts, architecture, and components.
  • Scripting and Automation: Ability to automate tasks and scripts using tools like Ansible or Terraform.
  • Operating the firewall for the organization
  • Monitoring the internet connection for security risks
  • Employing the latest security protocols
  • Monitoring the local area network (LAN) for threats or errors
  • Classify various software anomalies.
  • Develop software quality assurance plans.
  • Establish software quality metrics and methodologies.
  • Demonstrated experience with Atlassian software.
  • Skilled in servant leadership, facilitation, situational awareness, conflict resolution, continual improvement, empowerment, and increasing transparency
  • Demonstrated ability to build, develop, and coach high-performing software development teams
  • Ability to thrive in a fast-moving environment and work on multiple priorities and/or projects simultaneously without impact to quality of work
  • Demonstrated experience in issue identification and resolution
  • Moderate to expert-level knowledge of JIRA or other agile tools to measure team productivity and report metrics
  • Must possess and utilize exceptional communication skills to keep teams operating at maximum efficiency while also ensuring that senior leaders and executive management are always informed of progress
  • Excellent communication and mentoring skills
  • Adaptable and flexible in a cross-functional environment
  • Excellent written and verbal communication skills
  • Ability to lead retrospectives, document outcomes, and guide team members in best practices

Desirable qualifications and certifications

  • Red Hat OpenShift Skill Paths
  • Red Hat Certified OpenShift Administrator (EX280):
  • OpenShift CLI (oc)
  • Kubernetes API

Equal Opportunity Statement:
Seneca Holdings provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex/gender, sexual orientation, national origin, age, disability, marital status, genetic information and/or predisposing genetic characteristics, victim of domestic violence status, veteran status, or other protected class status. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation and training. The Company also prohibits retaliation against any employee who exercises his or her rights under applicable anti-discrimination laws. Notwithstanding the foregoing, the Company does give hiring preference to Seneca or Native individuals. Veterans with expertise in these areas are highly encouraged to apply.
 

 

Salary.com Estimation for Senior System Administrator in Patuxent River, MD
$118,606 to $146,743
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