Senior Mission Systems Engineer - ISR/Defense

L3Harris; Nashville (TN); On-site; USD 120,000 - 160,000; Full time

Job summary

L3Harris is seeking a Sr. Specialist, Systems Engineer in Nashville, TN. This senior role focuses on product and mission-system engineering, including requirements, architecture, integration, verification, and lifecycle execution.

You will work with end users, platform teams, and Agile software teams to define configurations and support mission management systems for ISR platforms. Ideal candidates bring 6+ years of systems engineering experience, MBSE familiarity, and a track record of

Qualifications

• Bachelor’s Degree with 6+ years of relevant experience; graduate degree reduces requirement to 4+ years; without degree 10+ years experience.
• 6+ years in systems engineering across full lifecycle.
• 6+ years in requirements management, risk management, and system integration and verification.
• Preferred: BS in STEM; Engineering, Physics, Mathematics or CS acceptable.
• Demonstrated ability to work in cross-functional engineering teams.
• MBSE familiarity.
• Experience with multi-domain mission systems and secure architectures.
• Ability to obtain and maintain a US Secret Security clearance.

Responsibilities

• Execute engineering work products from requirements through verification and technical documentation.
• Collaborate with cross-functional teams to integrate hardware, software, and constraints into practical solutions.
• Conduct technical analysis, risk identification, and trade studies to support design decisions.
• Present technical status, issues, and recommendations in reviews.
• Contribute to proposal, planning, and execution activities aligned to program milestones.
• Support compliance with customer, regulatory, and security requirements.
• Travel up to 25% for integration, testing, and customer engagement.

Skills

Systems engineering

Requirements management

Risk management

Cross-functional collaboration

MBSE familiarity

Security clearance

System integration

Lifecycle verification

Education

Bachelor’s Degree in STEM

Graduate Degree in STEM

Tools

MBSE tools

Job description

L3Harris is seeking a Sr. Specialist, Systems Engineer in Nashville, TN. This senior role focuses on product and mission-system engineering, including requirements, architecture, integration, verification, and lifecycle execution.

You will work with end users, platform teams, and Agile software teams to define configurations and support mission management systems for ISR platforms. Ideal candidates bring 6+ years of systems engineering experience, MBSE familiarity, and a track record of