Senior Mission Protection Systems Engineer (TS/SCI)

L3Harris Technologies; Springfield (VA); On-site; USD 92,500 - 171,500; Full time

Benefits offered by this job

Health insurance

401(k) match

Paid time off

Parental leave

Education assistance

Job summary

L3Harris Technologies is seeking a Senior Specialist, Systems Engineer – Mission Protection Specialist to support a high‑visibility national security program in Springfield, VA. You will identify, assess, and mitigate threats to space, cyber, and ground systems supporting U.S.

government missions. The ideal candidate will apply OPSEC, counterintelligence, cyber defense, and threat principles to protect sensitive capabilities and ensure survivability in contested environments.

Qualifications

• Bachelor's degree required with 4+ years of related experience; graduate degree preferred.
• Active TS/SCI with CI poly clearance required.
• Experience with threat modeling, vulnerability analysis, and risk management.

Responsibilities

• Conduct mission protection assessments across space, cyber, and ground architectures.
• Collaborate with mission planners and operators to integrate protection across lifecycle.
• Develop mitigation plans and implement countermeasures aligned with mission priorities.
• Coordinate with DoD and IC for alignment with guidance and classification policies.
• Develop threat models, CONOPS, and risk management frameworks.
• Support red/blue team assessments and security reviews.
• Prepare briefings for senior leadership on threat assessments and outcomes.
• Possess ability to obtain and maintain crew operations certification; work in classified centers.

Skills

Threat modeling

Vulnerability analysis

Risk management

DoD liaison

Briefing senior stakeholders

Orbital mechanics

Counterintelligence concepts

Education

Bachelor’s Degree

Graduate Degree

Tools

STK Level 2/3 Certification

ODTK

Job description

L3Harris Technologies is seeking a Senior Specialist, Systems Engineer – Mission Protection Specialist to support a high‑visibility national security program in Springfield, VA. You will identify, assess, and mitigate threats to space, cyber, and ground systems supporting U.S.

government missions. The ideal candidate will apply OPSEC, counterintelligence, cyber defense, and threat principles to protect sensitive capabilities and ensure survivability in contested environments.