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Senior Linux System Engineer with Security Clearance

Information Systems Solutions, Inc.
Sierra Vista, AZ Full Time
POSTED ON 11/2/2026
AVAILABLE BEFORE 11/21/2026
Information Systems Solutions (ISS) is seeking a Senior Linux System Engineer. As a Senior Linux System Engineer, you will help ensure today is safe and tomorrow is smarter. Our work depends on a Senior Linux System Engineer joining our team to review, analyze and provide Tier III support for patches and updates, to include testing the baseline in the Engineering Operations Facility (EOF) prior to release to the RCCs. This position is 100% onsite. Specific duties include but are not limited to the following:

  • Designs and defines system architecture for new or existing computer systems.
  • You will also develop Enterprise Technical Procedures (ETPs) with the directions to apply patches, upgrades and security configurations and/or updates to the baseline system in the EOF for testing IAW with the STIGs.
  • Ensure that already-provisioned Linux systems are kept in compliance with baseline requirements & ever-changing enterprise policy (e.g., equivalent to Group Policy in the Windows realm for ongoing compliance updates).
  • Monitor all solutions integrated via a centralized alerting system.
  • Develop an operating system lifecycle plan with integration of DoW STIGs and other recommended security standards. Why Work For ISS? At ISS we pride ourselves on providing an employee-focused and family first environment. Being a small business, we take the time to get to know our employees and have a vested interest in helping them achieve their career goals. We work to schedule regular social gatherings within the company to foster camaraderie. ISS values their employees by providing a comprehensive benefits package that includes a fully vested 401(k) matching program, coverage of family medical deductibles, spot bonuses, and educational assistance to further your career. Requirements Clearance Level

Secret Certifications (IAT Level III)

One of the following: CASP CCNP Security CISA CISSP (or Associate) GCED GCIH Required Skills Education & Experience: Bachelor’s Degree and a minimum of 5 years’ experience required An additional 4 years of experience may be substituted in lieu of degree. Technical Skills:

  • VMWare management/administration experience.
  • Thorough experience with Red Hat Enterprise Linux (RHEL), Ubuntu or a derivative.
  • Knowledge of Windows and Linux Security Technical Implementation Guide (STIG) and current DISA’s hardening protocol.
  • Experienced in systems analysis, design, integration, documentation, and engineering.

Salary.com Estimation for Senior Linux System Engineer with Security Clearance in Sierra Vista, AZ
$97,545 to $116,445
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