UNIX Engineer III

IPSecure, Inc; San Antonio (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

IPSecure is seeking a senior UNIX Engineer III to design, implement, and sustain enterprise UNIX and Linux environments in support of DoD cyber operations at JBSA Lackland, San Antonio, TX. The role requires TS/SCI clearance and provides opportunities to modernize infrastructure with automation.

You will lead 24x7 mission-critical systems, implement DISA STIGs, RMF, and vulnerability remediation while collaborating across security enclaves and engineering teams to ensure secure, resilient

Qualifications

• Active TS/SCI security clearance.
• Bachelor's degree in Computer Science, Information Technology, Computer Engineering, Cybersecurity, or related field.
• Minimum of 8 years of enterprise UNIX/Linux engineering experience.
• Experience in DoD, Federal, or large enterprise environments; RHEL/Oracle Linux, Bash, Python, Ansible, LVM, NFS, LDAP, SSH, VMware integration, backup/recovery, performance tuning.

Responsibilities

• Design, implement, configure, and maintain enterprise UNIX/Linux server environments.
• Engineer highly available Linux platforms supporting mission-critical applications.
• Perform OS deployments, upgrades, migrations, and technology refresh initiatives.
• Integrate UNIX/Linux systems with virtualization, storage, backup, and cloud environments.
• Administer UNIX/Linux systems across multiple security enclaves.
• Manage authentication, file systems, storage, and system resources.
• Monitor system health, capacity, and performance.
• Support enterprise backup and disaster recovery.
• Implement DISA STIG-compliant configurations; RMF/A&A compliance support.
• Provide Tier III engineering support.
• Develop automation using Bash, Python, and Ansible.

Skills

Team leadership

Problem solving

Education

Bachelor's degree in CS/IT/CE/Cybersecurity

Tools

Bash

Python

Ansible

RHEL

Oracle Linux

VMware

LDAP

NFS

SSH

LVM

Automation

Job description

UNIX Engineer III – TS/SCI Clearance Required – JBSA Lackland - San Antonio, TX

The UNIX Engineer III serves as the senior UNIX/Linux infrastructure engineer responsible for the design, implementation, administration, sustainment, and modernization of enterprise UNIX and Linux environments supporting the Department of the Air Force's Defensive Cyberspace Operations Weapon Systems. The position ensures secure, resilient, and highly available enterprise infrastructure supporting 24x7 cyber operations while maintaining compliance with DoD cybersecurity requirements, RMF, and DISA STIGs.

Job Responsibilities

• Design, implement, configure, and maintain enterprise UNIX and Linux server environments.
• Engineer highly available Linux platforms supporting mission-critical applications.
• Perform operating system deployments, upgrades, migrations, and technology refresh initiatives.
• Integrate UNIX/Linux systems with virtualization, storage, backup, and cloud environments.
• Administer enterprise Linux and UNIX operating systems across multiple security enclaves.
• Manage authentication, file systems, storage, and system resources.
• Monitor system health, capacity, and performance.
• Support enterprise backup and disaster recovery.
• Implement DISA STIG-compliant UNIX/Linux configurations.
• Support RMF, A&A, vulnerability remediation, POA&M activities, and audit readiness
• Provide Tier III engineering support.
• Develop automation using Bash, Python, and Ansible.
• Support Infrastructure-as-Code, Checklist-as-Code, and modernization initiatives.

Basic Qualifications

Security Clearance: Active TS/SCI

Education: Bachelor's degree in Computer Science, Information Technology, Computer Engineering, Cybersecurity, or related field. Additional experience may substitute for education.

Certification: CASP+, CCNP Security, CCSP, GCIA, GCED, GCIH, or Red Hat Certified Engineer (RHCE) (or equivalent enterprise UNIX/Linux certification).

Experience

• Minimum of 8 years of enterprise UNIX/Linux engineering experience.
• Experience supporting DoD, Federal, or large enterprise environments.
• Experience with RHEL, Oracle Linux, Bash, Python, Ansible, LVM, NFS, LDAP, SSH, VMware integration, backup/recovery, and performance tuning.

Preferred Qualifications

• Experience engineering and sustaining UNIX/Linux infrastructure supporting Department of the Air Force DCO weapon systems, DAFIN-SOC environments, or comparable 24x7 mission operations.
• Advanced expertise with RHEL and Oracle Linux, including high-availability architectures, VMware integration, LVM, NFS, LDAP, SSH, enterprise backup and recovery, and performance optimization.
• Demonstrated experience automating infrastructure provisioning, configuration management, and security compliance using Ansible, Bash, Python, Infrastructure-as-Code, and Checklist-as-Code methodologies.

Benefits

Medical, Dental, Vision, Unlimited Vacation, Sick Leave, Paid Federal Holidays, Education and Certification Reimbursement Program, 401(k) retirement plan with safe harbor employer match after 3 months, Prepaid Legal Plan and Identity Protection Plan available, Accident Insurance, Critical Illness Insurance, and Hospital Indemnity Insurance available.

EEOC Statement

IPSecure does not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.