Sr. Information Systems Security Engineer ACTIVE TS/SCI CIP REQUIRED

Select Search Associates LLC; Manassas (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

Select Search Associates LLC is seeking a Senior Information System Security Engineer to join on-site at a client location in Lorton, VA. An active Top Secret with SCI clearance and DoD-aligned expertise are required.

You will lead security assessments, design secure solutions, automate reporting, and mentor engineers, leveraging ePO, Splunk, ACAS, and Azure services to safeguard mission-critical systems.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field and 3+ years of leadership experience OR equivalent professional experience.
• Advanced skills across security domains including AD, ePO, Splunk, STIG/SCAP, and cloud technologies.
• Ability to communicate complex security concepts to stakeholders.

Responsibilities

• Perform and review technical security assessments to identify vulnerabilities and mitigations.
• Architect innovative security solutions to support cyber threat operations.
• Mentor ISSEs, ISSEs, and ISSMs to elevate team capabilities.
• Automate threat assessments, posture reporting, and monitoring activities.
• Report findings to leadership and ensure alignment with DoD policies.
• Lead by example with high-quality engineering standards.

Skills

Active Directory

Leadership

Mentoring

Security Communication

Education

Bachelor's degree in CS/Engineering

Tools

ePO

Splunk

ACAS

Azure Automation

Azure Monitor

STIG/SCAP

Job description

Sr. Information Systems Security Engineer ACTIVE TS/SCI CIP REQUIRED

One of our clients has an immediate needSENIOR INFORMATION SYSTEM SECURITY ENGINEERto workfull-time on site at their client location in LORTON, VA. This position requires an activeTOP SECRET with SCI level clearance.

As a Senior Information System Security Engineer (ISSE), you will provide expert engineering support to ensure the confidentiality, integrity, and availability of mission-critical systems. You will perform technical security assessments, design secure solutions, automate reporting, and guide leadership on cybersecurity risks, vulnerabilities, and mitigation strategies. You will work with technologies such as ePO, Splunk, ACAS, Azure Automation, STIG/SCAP, Active Directory, and Azure security services to secure enterprise environments in alignment with DoD cybersecurity policies and standards.

Responsibilities:

• Perform and review technical security assessments of computing environments to identify vulnerabilities, compliance gaps, and recommend mitigations.
• Architect and engineer innovative solutions to support ongoing Cyber Threat and Defensive Operations.
• Provide functional expertise and technical recommendations to ISSOs, ISSEs, and ISSMs.
• Automate threat assessment, posture reporting, and system monitoring activities.
• Analyze system and organizational security posture trends and report findings to the ISSM/ISSO.
• Recommend cybersecurity measures based on significant threats and vulnerabilities.
• Implement security controls in alignment with confidentiality, integrity, availability, authentication, and non-repudiation principles.
• Develop and recommend modifications based on exercise or test results.
• Mitigate or recommend acceptance of identified risks and deficiencies during certification, testing, or operational reviews.
• Act as a technical lead and mentor to engineers at all levels to elevate team capacity and performance
• Lead by example through high-quality engineering excellence

Required Qualifications:

• Certification: IAT/IAM/IASAE Level III (DoD 8570 compliant).

• Technical Expertise: Advanced Skills in ALL of the following areas:
  • Active Directory (AD DS, ADFS, AD CS, WSUS)
  • ePO, Splunk, STIG/SCAP, YUM, ACAS automation
  • Azure VPN Gateways, Azure Monitor/Log Analytics
  • SAP systems security
  • GPOs
  • SQL Server STIG hardening
• Must have proven, day-one depth of knowledge across ePO, ACAS, and Splunk
• Must be able to build systems from scratch
• Must have troubleshooting experience with the deployment and maintenance
• Must have understanding of how the tools are different when they move to hyperscale
• Must be able to lead, guide and mentor the other Information System Security Engineers
• Must have Network compliance regulations knowledge
• Must have experience with Compliance & Frameworks (NIST, JSIG/RMF, SCTM)
• Must have experience with Hyperscale, Architecture and Integration
• Must have Automation & Reporting experience
• Must be able to continuously improve processes and team velocity
• Must be able to communicate complex security concepts to non-technical stakeholders

Experience:

8-12 years of demonstrated performance in related technology areas.

Education:

Bachelor's degree in Computer Science, Engineering, or related field and 3+ years of leadership experience OR equivalent professional experience.

Travel:

Up to 10%

Security Clearance:

Active Top Secret with SCI.

Preferred Qualifications:

• 5+ years leadership experience in a related technical or cybersecurity area.
• Technical certifications in Microsoft Azure or related cloud technologies.

Requirements:

• Must be within driving distance of Lorton, VA OR willing to relocate there
• Must be willing to work onsite
• Must be willing and able to travel up to 10%
• Must possess an active TS/ SCI clearance or above
• Please note that pursuant to a government contract, this specific position requires U.S. citizenship status
• DoD 8570 Level III compliant certification is required

What is Important to Us:

• You are an excellent communicator in writing and speaking.
• You have the ability to work independently but also value teamwork.
• Your problem-solving skills are excellent.
• You are looking for a job where performance appraisals occur regularly, and you look forward to advancing your career.
• You seek a community of virtue-centered co-workers and clients.