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Senior Security Engineer

St Louis, MO Full-time On-site $135k — $145k per year 10/02/2026 Job ID: 000358
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Endpoint Security Enterprise Security Technologies Vendor Integration Linux Administration Security Tools Configuration

Summary

What you’ll impact

The Senior Endpoint Security Engineer will design, implement, and support endpoint security solutions for the organization, ensuring mission‑critical networks and data are protected. The role involves collaborating with cross‑functional teams, managing Linux‑based security tools, supporting incident response, and maintaining compliance with relevant cybersecurity frameworks.

Responsibilities

What you'll do

  • Design, implement, and support endpoint security solutions to safeguard mission-critical networks and data
  • Collaborate with cross-functional teams to deploy and maintain enterprise security technologies
  • Apply deep technical knowledge to recommend hardware/software tools that improve endpoint security posture
  • Work with vendors and internal stakeholders to integrate, test, and enhance security platforms
  • Manage Linux-based security tools and perform advanced configuration and troubleshooting
  • Support incident response by analyzing and documenting security events and leading mitigation strategies
  • Ensure compliance with system standards and DoD cybersecurity frameworks

Requirements

What you’ll bring

  • Active TS/SCI clearance (must be willing to pass a post-hire Government polygraph)
  • DoD 8570 IAT Level II certification (e.g., Security+ CE)
  • Ability to obtain a CSSP Infrastructure Support certification within 6 months
  • Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience)
  • 10+ years of experience in Cybersecurity, with a strong background in endpoint security engineering
  • Hands‑on experience with tools such as HBSS, Carbon Black, Microsoft ATA, Tanium
  • Proficiency in Linux administration
  • Familiarity with DoD Architecture Framework and enterprise‑scale cybersecurity practices

Ready to Move Forward?

Apply now and our recruiting team will reach out with next steps, interview guidance, and client insights tailored to this role.