Senior Endpoint Security Engineer New St. Louis, MO

D2 Consulting; St. Louis (MO); On-site; USD 135,000 - 145,000; Full time

Benefits offered by this job

Health/Dental/Vision

Job summary

D2 Consulting seeks a Senior Endpoint Security Engineer to support the National Geospatial-Intelligence Agency (NGA) with top-tier cyber defense and endpoint protection solutions. The role requires an active TS/SCI clearance and a strong background in Linux systems and enterprise security tools.

You will design and implement endpoint security strategies, collaborate with cross-functional teams, and drive security improvements across mission-critical networks while adhering to DoD cybersecurity

Qualifications

• TS/SCI clearance required
• CSSP Infrastructure Support certification within 6 months (nice to have)
• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)
• 10+ years of experience in Cybersecurity with a strong endpoint security background
• Hands-on experience with HBSS, Carbon Black, Microsoft ATA, Tanium
• Proficiency in Linux administration
• Familiarity with DoD Architecture Framework and enterprise cybersecurity practices

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

Skills

Security clearance

Linux administration

Security architecture

Education

Bachelor's degree in Computer Science/Engineering

Tools

HBSS

Carbon Black

Microsoft ATA

Tanium

Job description

ACTIVE TS/SCI SECURITY CLEARANCE REQUIRED

Are you passionate about cybersecurity and ready to make a mission impact? D2 is growing, and we’re looking for a Senior Endpoint Security Engineer to join our team—supporting the National Geospatial-Intelligence Agency (NGA) in delivering top-tier cyber defense and endpoint protection solutions.

This is one of several new roles created as part of the program expansion. It’s a great opportunity to work alongside talented professionals, leverage cutting-edge technologies, and elevate your cybersecurity career in a high-visibility, high-impact environment.

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

What You Bring:

Required:

• Active TS/SCI clearance (must be willing to pass a post-hire Government polygraph)
• 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

Nice to Have:

• Active CSSP Infrastructure Support certification.
• Experience with Windows AD architecture and VMware environments.

If you're ready to take your cybersecurity career to the next level, we’d love to hear from you. Let’s secure the future—together.

Additional Information

• All your information will be kept confidential according to EEO guidelines.
• Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically $135-$145k. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.
• Highlights of our benefits include Health/Dental/Vision, 401(k) match, Accrued PTO, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and more!

D2 Consulting is committed to a merit-based recruitment process and encourages applications from all qualified individuals. As a Veteran-Owned Small Business, we particularly welcome applications from veterans who have the requisite skills and experience. Job applicants that are interested in one of our openings and may require a reasonable accommodation to participate in the job application or interview process, should contact us to request an accommodation.

Our company is a government contractor subject to the Vietnam Era Veterans’ Readjustment Assistance Act of 1974 (VEVRAA), which requires government contractors to take affirmative action to employ and advance in employment protected veterans. To help us comply with VEVRAA, we invite you to voluntarily identify your veteran status. Submission of this information is voluntary and will not affect your application or employment.