Senior Linux Systems Lead — TS/SCI, On-Site Tucson

Rincon Research Corp; Tucson (AZ); On-site; USD 85,000 - 110,000; Full time

Benefits offered by this job

ESOP participation

401(k) plan

Health insurance

Paid time off

Job summary

Rincon Research Corporation (RRC) is seeking an IT Systems Administrator to own the technical management of a customer program's computing environment in Tucson, AZ. This Linux-focused role requires 8–10 years of relevant experience, leading a team supporting the program, and working across a broad technology stack.

You will design, build, and operate servers, networks, and platform services, while addressing security, patching, and compliance, with direct impact on mission-critical systems for

Qualifications

• Bachelor's degree in Computer Science, Information Systems, Engineering, or related discipline or 8 years of hands-on experience.
• Proven experience administering Linux systems (RHEL, Rocky, CentOS) with patching, remediation, and security tooling (Nessus or Rapid7).
• Experience with OpenShift or similar container platforms, identity management, and centralized logging.
• Experience with developer tooling such as GitLab and Harbor.
• Familiarity with Windows systems administration.
• Strong scripting abilities in Bash, Python, or PowerShell.

Responsibilities

• Translate program requirements into a working technical design and implement it.
• Lead design and build of the program's systems, including servers, network, and platform services.
• Monitor and respond to operational and cybersecurity alerts; address availability, DR, and performance.
• Manage platform services and developer tooling (OpenShift, identity management, logging, GitLab, Harbor).
• Lead patch cycles and hardware lifecycle management; plan refresh and expansion.
• Coordinate patching cycles and maintain documentation to meet program requirements.
• Develop and maintain program documentation and system diagrams.

Skills

Linux systems

OpenShift

GitLab

Harbor

Scripting (Bash/Python/PowerShell)

Configuration management

Networking basics

Team coordination

Education

Bachelor's degree in CS/IS/Engineering or 8 years hands-on

Tools

Puppet

Ansible

Terraform

Nessus/Rapid7

Job description

Rincon Research Corporation (RRC) is seeking an IT Systems Administrator to own the technical management of a customer program's computing environment in Tucson, AZ. This Linux-focused role requires 8–10 years of relevant experience, leading a team supporting the program, and working across a broad technology stack.

You will design, build, and operate servers, networks, and platform services, while addressing security, patching, and compliance, with direct impact on mission-critical systems for