Senior Mission Protection Systems Engineer

L3HHCM20; Springfield (VA); On-site; USD 93,000 - 172,000; Full time

Benefits offered by this job

Health insurance

Disability insurance

401(k) match

Flexible spending accounts

Employee assistance program (EAP)

Education assistance

Parental leave

Paid time off

Company-paid holidays

Job summary

L3Harris Technologies in Springfield, Virginia, seeks a Senior Specialist, Systems Engineer — Mission Protection Specialist to identify, assess, and mitigate threats across space, cyber, and ground systems for national security missions.

The role requires OPSEC, counterintelligence and threat-based defense expertise, with the ability to work in classified environments and support 24/7 mission requirements. TS/SCI with CI Poly is required.

Qualifications

• Bachelor’s or graduate degree required with 4+ years of related experience; alternative is 8+ years of related experience.
• Active Top Secret/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, operators, and partners to integrate protection strategies.
• Develop mitigation plans and implement countermeasures aligned with mission assurance priorities.
• Coordinate with DoD and IC stakeholders aligning with guidance and policies.
• Develop threat models, CONOPS, and risk management frameworks.
• Contribute to red/blue team assessments, tabletop exercises, and program reviews.
• Prepare briefings for senior leadership on threats and mitigation outcomes.
• Ability to obtain and maintain a crew operations certification.
• Support classified operations centers to meet 24/7 mission requirements.

Skills

Threat modeling

Vulnerability analysis

Risk management

Security clearance TS/SCI

Education

Bachelor’s degree

Graduate degree

Experience in lieu of degree

Job description

L3Harris Technologies in Springfield, Virginia, seeks a Senior Specialist, Systems Engineer — Mission Protection Specialist to identify, assess, and mitigate threats across space, cyber, and ground systems for national security missions.

The role requires OPSEC, counterintelligence and threat-based defense expertise, with the ability to work in classified environments and support 24/7 mission requirements. TS/SCI with CI Poly is required.