Senior Endpoint Security Engineer

About the role

D2 is growing and seeking a Senior Endpoint Security Engineer to support the National Geospatial-Intelligence Agency (NGA) in delivering top-tier cyber defense and endpoint protection solutions. This role is part of a program expansion, offering the opportunity to work with talented professionals, leverage cutting‑edge technologies, and advance your cybersecurity career in a high‑visibility, high‑impact environment.

Responsibilities

• 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

• 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

Skills

• 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
• Nice to have: Active CSSP Infrastructure Support certification, Linux certifications (RHCSA, CompTIA Linux+), experience with Windows AD architecture and VMware environments

Benefits

• Health/Dental/Vision
• 401(k) match
• Accrued PTO
• STD/LTD/Life Insurance
• Referral Bonuses
• Professional development reimbursement

Pay

The salary range for this position is typically $135‑$145k. Compensation is based on factors such as education, experience, certifications, and other requirements, and may fall outside of the stated range.