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L3Harris Technologies

Global defense contractor delivering aerospace tech

Lead Systems Engineer - Modeling & Simulation

Mechanical EngineeringPosted on Nov 5
Full-timeNashville, TN, USANo salary listed

About the Job

Requirements

  • A bachelor's degree with at least 9 years of prior relevant experience, or a graduate degree with at least 7 years of prior related experience; alternatively, 13 years of prior related experience in lieu of a degree.
  • At least 9 years of experience in systems engineering methods across full lifecycle activities.
  • At least 9 years of experience with requirements management, risk management, and system integration and verification practices.
  • Ability to obtain a U.S. Secret security clearance.
  • Familiarity with model-based systems engineering.
  • Experience with multi-domain mission systems and secure architectures.
  • Experience supporting government or defense technical reviews.
  • Experience balancing technical, schedule, and cost constraints across system-level decisions.
  • Professional experience with analysis tool development and configuration management/data management.
  • Professional experience with systems engineering analysis tools such as MATLAB and Python.

Responsibilities

  • Develop digital engineering artifacts that support system understanding and decision making.
  • Build performance models to evaluate system behavior and sensitivities.
  • Perform Monte Carlo analysis to assess uncertainty, margin, and risk.
  • Conduct and document trade studies using analytical results.
  • Coordinate assumptions, inputs, and outputs with cross-functional engineering stakeholders.
  • Translate model results into actionable system-level recommendations.
  • Maintain controlled analytical artifacts and supporting technical documentation.
  • Execute engineering work products from requirements through verification and technical documentation.
  • Collaborate with cross-functional teams to integrate hardware, software, and operational constraints into practical solutions.
  • Conduct technical analysis, identify risks, and conduct trade studies to support design decisions.
  • Present technical status, issues, and recommendations in formal and informal reviews.
  • Contribute to proposal, planning, and execution activities aligned to program milestones.
  • Support compliance with customer, regulatory, and security requirements.
  • Travel up to 25% to support integration, test, customer engagement, and program execution.
  • Support work performed in a classified or controlled environment.
  • Perform technical planning, requirements decomposition, interface definition, and verification strategy for mission systems.
  • Execute system integration, validation, and technical baselines across concept, design, fabrication, test, installation, operation, maintenance, and disposal.
  • Lead or support design reviews, peer reviews, and technical interchanges.
  • Produce and maintain systems engineering artifacts including requirements traceability, risk registers, and verification evidence.
  • Ensure system designs align with security and government compliance requirements.

Desired Qualifications

  • A Bachelor of Science degree in a STEM discipline is preferred; Engineering, Physics, Mathematics, and Computer Science are acceptable fields.
  • Ability to work effectively in cross-functional engineering teams.
  • Ability to collaborate across software, hardware, mechanical, electrical, manufacturing, and program teams.
  • Ability to manage large, complex project initiatives of substantial importance with minimal oversight.
  • Ability to communicate across organizational boundaries to explain and influence changes to technical practices and approaches.

About the Company

L3Harris Technologies

Global defense contractor delivering aerospace tech

L3Harris Technologies provides advanced aerospace, defense, and space systems for governments and commercial customers. Its products include sensors, communications, and propulsion—such as tactical radios, night-vision gear, satellite payloads, missile defense, and space propulsion—delivered as integrated systems for operations across air, land, sea, space, and cyber domains. The company blends legacy technologies from two joining giants with newer capabilities, faster acquisition cycles, and a focus on missiles, space, and resilient communications to field solutions quickly. Its goal is to be a trusted, scale-ready provider of next‑generation defense and intelligence capabilities for national security and related customers.

Company size
10,001+
Company stage
IPO
Headquarters
Melbourne, FL
Founded
1895

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