Senior Information System Security Engineer (TS/SCI)

OMNI Consulting Solutions, LLC; Chantilly (VA); On-site; USD 130,000 - 170,000; Full time

Benefits offered by this job

Medical Coverage

Dental Benefits

Vision Benefits

Life Insurance

401(k) Retirement Plan with Employer 


Paid Time Off & Sick Leave

Company Sponsored Social Events

Job summary

OMNI Consulting Solutions, LLC is seeking an Information System Security Engineer (ISSE) in Chantilly, VA to deliver cybersecurity engineering across the system lifecycle. Work with architecture reviews, security control implementation, and RMF/DoD accreditation activities.

You will support risk assessments, create security documentation, and collaborate with engineers, developers, and ISSM/ISSO to weave security requirements into builds. Active TS/SCI is required.

Qualifications

• Bachelor's degree in a technical field (Computer Science, Computer Engineering, Cybersecurity, or related).
• Active TS/SCI clearance.
• 10+ years in cybersecurity engineering, systems security architecture, or related roles.
• DoD 8570/8140 IAT Level III or IASAE certification (e.g., CISSP, CASP+).
• Strong knowledge of network, system, and application security architecture and controls.
• Experience supporting RMF control implementation and accreditation activities.

Responsibilities

• Provide cybersecurity engineering support throughout the SDLC, from design through accreditation.
• Support system architecture reviews to ensure security controls are properly designed and implemented.
• Assist in selecting, implementing, and testing technical security controls per RMF/CNSSI 1253.
• Conduct or support risk assessments and vulnerability analyses of designs and configurations.
• Develop and review security documentation for accreditation packages (SSPs, diagrams, control statements).
• Collaborate with system engineers, developers, and ISSM/ISSO to integrate security requirements into builds.
• Support security testing activities, including control assessments and coordination of pentest/vulnerability testing.
• Recommend technical solutions to remediate weaknesses or POA&M items.

Skills

Cybersecurity engineering

Systems security architecture

RMF knowledge

IAT Level III / IASAE cert

Active TS/SCI clearance

Education

Bachelor's degree in a technical field

Tools

Vulnerability scanners

SIEM

Configuration management tools

Job description

OMNI Consulting Solutions, LLC is seeking an Information System Security Engineer (ISSE) in Chantilly, VA to deliver cybersecurity engineering across the system lifecycle. Work with architecture reviews, security control implementation, and RMF/DoD accreditation activities.

You will support risk assessments, create security documentation, and collaborate with engineers, developers, and ISSM/ISSO to weave security requirements into builds. Active TS/SCI is required.