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L3Harris Technologies

Global defense contractor delivering aerospace tech

Senior Manager - Mechanical Engineering

Engineering LeadershipUpdated on Nov 14
Full-timeClifton, NJ, USA$146k - $271k

About the Job

Requirements

  • Bachelor’s degree in engineering and a minimum of 12 years of prior relevant experience, or a graduate degree and a minimum of 10 years of prior related experience; in lieu of a degree, a minimum of 16 years of prior related experience.
  • Experience in 3D modeling and critical hardware design and development, including environmental requirements, power delivery, and aggressive thermal management.
  • Ability to work independently and within a multidisciplinary team environment.
  • Experience leading a team and advancing mechanical technologies.
  • Ability to obtain and maintain a U.S. Secret security clearance and any additional clearances as required.

Responsibilities

  • Lead a cross-functional team in developing, designing, implementing, qualifying, and productionizing ruggedized ground and airborne military systems.
  • Lead mechanical engineering efforts for new-business preproposals and proposal support, including generating Basis of Estimates, and serve as the responsible Mechanical Project Engineer on programs and internal development projects as needed.
  • Design, lay out, test, and evaluate mechanical and electromechanical devices or systems, emphasizing electronic packaging for Electronic Warfare programs.
  • Prepare design specifications and perform or review thermal, structural, dynamic, and fatigue analyses to meet mechanical requirements and assess feasibility within time and cost constraints.
  • Lead mechanical engineering activities for product design, analysis, documentation, fabrication, assembly, and qualification in accordance with specifications and technical, schedule, and process requirements.
  • Investigate product or process problems and participate in the Failure Review Board.
  • Serve as the Chief Mechanical Engineer for the business and as point of contact for the General Manager, Chief Engineers, Program Managers, and Mechanical Engineering leadership.
  • Serve as the subject matter expert for Electronic Warfare programs and products.
  • Perform detailed mechanical design and analysis of electronic systems, boxes, and modules.
  • Generate specifications, models, and drawings in accordance with ASME Y14.100 and ASME Y14.5.
  • Generate mechanical design concepts that meet equipment specifications and refine designs using computer-aided design, 3D-printed models, simulation tools, and functional prototypes.
  • Conduct mechanical and environmental testing and troubleshoot electronic systems mechanically.
  • Provide proposal support and development.
  • Assist in developing the site-wide Mechanical strategy.
  • Work with cross-functional teams to develop new solutions.
  • Perform computer-aided design modeling of parts and assemblies.
  • Conduct trade studies to determine optimal designs.
  • Review structural and thermal analyses of components and assemblies.
  • Apply thermal-management expertise to high-power electronics in constrained volumes.
  • Integrate electromechanical systems and package electronics.
  • Lead mechanical design efforts and peer reviews, Preliminary Design Reviews, Critical Design Reviews, and other required design reviews.
  • Own schedule, cost, and technical responsibilities at the major subsystem level.
  • Interface with customers and upper management.
  • Provide formal or informal guidance and mentorship to team members.
  • Direct and review the work of junior engineers, designers, and technicians.
  • Participate in risk assessment and develop mitigation strategies for complex projects.
  • Travel domestically and internationally as needed, estimated at 2–5% annually.
  • Take on roles such as Integrated Product Team Lead when necessary.
  • Oversee a team of Mechanical Engineers, partnering with programs to ensure appropriate staffing, adherence to engineering processes, and proposal support.
  • Track performance of the Clifton Mechanical Engineering group, including staffing, training, onboarding, employee development, engagement, and proactive retention.
  • Review metrics regularly to drive year-over-year performance improvement.
  • Serve as the Mechanical Engineering functional representative for site-specific design reviews and review or approve proposals and Basis of Estimates as needed.
  • Provide technical evaluation and oversight of program execution, and lead or participate in technical issue-resolution teams when required.
  • Ensure knowledge transfer and mentoring of less experienced engineers within the department.

Desired Qualifications

  • Experience with ASME Y14.5M-1994 and geometric dimensioning and tolerancing.
  • At least 6 years of experience in 3D computer-aided design modeling using PTC Creo.
  • At least 8 years of experience packaging electronics, including design for and testing in military environments such as temperature, vibration, and shock.
  • At least 8 years of experience managing thermal conditions for high-power electronics.
  • Experience leading technical-content generation for bids, including scope capture, requirements development, materials pricing, and labor estimates.
  • Ability to obtain a Top Secret security clearance.
  • Experience leading and collaborating in multidisciplinary, diverse, and dynamic teams.
  • Strong written, verbal, and presentation communication skills.
  • Hands-on capability integrating and diagnosing complex mechanisms and products.
  • Experience with Design for Manufacturability and Assembly.
  • Experience with vibration and shock analysis for airborne applications.
  • Experience with additive manufacturing and part optimization.
  • Basic understanding of control systems.
  • Experience with machined-part design.
  • Experience with Earned Value Management System cost and schedule practices.
  • Familiarity with Windchill, military design and environmental test standards, FloTHERM, MATLAB, and MathCAD.
  • Familiarity with the Mechanical Engineering role in the printed circuit board design process.
  • Knowledge of electrical and optical cable routing and management in high-reliability environments.

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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