Demo

Endpoint Security Engineer III

TekMasters, LLC
St. Louis, MO Full Time
POSTED ON 10/16/2026
AVAILABLE BEFORE 11/16/2026
Job Description

Position Overview:

We are seeking a highly skilled Tenable product Administrator with hands-on experience in Linux platforms to join our team. The ideal candidate will be responsible for managing and administering our Tenable Suite environment, as well as configuring and maintaining them on Linux systems. This role requires a deep understanding of vulnerability management, security protocols, and the Tenable product suite, with a strong focus on Linux-based installation.

Responsibilities:

  • Install, configure, and maintain the Tenable Security Center, Tenable Nessus Scanners, and Tenable Nessus Managers on Linux platforms.
  • Perform regular vulnerability scans and assessments across the organization's network using Tenable products
  • Analyze scan results and prioritize vulnerabilities based on severity and impact.
  • Collaborate with IT and security teams to remediate identified vulnerabilities.
  • Generate and distribute vulnerability reports to stakeholders.
  • Monitor security alerts and respond to incidents in a timely manner.
  • Stay updated on the latest security threats and vulnerabilities.
  • Provide training and support to users on the Tenable Security Center, Tenable Nessus Scanners, and Tenable Nessus Managers on Linux
  • Ensure the optimal performance and security of the Tenable environment on Linux platforms
  • Configure and install various security products utilizing Linux OS.

Required Skills

  • TS/SCI clearance (current). As a post-hire requirement, selected candidate must be able to successfully pass and maintain a Government polygraph.
  • DoD 8570 IAT Level II certified (current)
  • Must obtain a CSSP Infrastructure Support certification within 6 months of hire date
  • Bachelor's degree (Engineering, Computer Science or related field) and ten (10) years of technical experience in Cyber Security. Additional experience may be considered in lieu of a degree.
  • Working knowledge of maintaining Enterprise Cyber Security Engineering requirements utilizing all or some of the following tools: Tenable Suite that include Security Center, Nessus Scanners, Nessus Manager with hands-on administrator experience
  • Strong working knowledge of Linux operating systems, including installation, configuration, and maintenance
  • Experience with large-scale enterprise/global networks in a high-paced, diverse environment
  • Understanding of and experience with the DoD Architecture Framework and other key DoD network architecture and strategic planning instructions
  • Experience in providing status reports and products to senior management and customers
  • Experience with plans, designs, and evaluations of security systems and architectures

Desired Skills

  • CSSP Infrastructure Support certification
  • Any Linux related certifications
  • Familiarity with scripting languages (e.g., Python, PowerShell) for automation tasks

Additional Details

Compensation & Benefits: This position has an anticipated salary range of $127,399-$164,000 per year. Actual compensation will be determined based on factors including experience, qualifications, skills, education, certifications, and business needs. Crimson Phoenix offers a comprehensive benefits package, including medical, dental, and vision insurance, a 401(k) with company match, generous paid time off, company-paid life and disability insurance, tuition reimbursement, professional development opportunities, employee recognition programs, and a culture that supports continuous learning and career growth.

Salary : $127,399 - $164,000

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