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L3Harris Technologies

Global defense contractor delivering aerospace tech

Sr Specialist - Thermal Analyst Mechanical Engineer, Space Systems, : Sign-on bonus, $20K max

Thermal & Fluids EngineeringUpdated on Nov 14
Full-timeWilmington, MA, USA$102k - $189k

About the Job

Requirements

  • Bachelor’s degree in Mechanical Engineering or another related engineering or science degree and at least 6 years of relevant experience; alternatively, a graduate degree and at least 4 years of relevant experience. In lieu of a degree, at least 10 years of relevant experience is required.
  • At least 3 years of experience with thermal analysis tools such as Thermal Desktop, Sinda, Thermal Fluent, or Icepak; Thermal Desktop is preferred.
  • At least 1 year of experience with thermal vacuum testing.
  • Professional experience working on aerospace or space programs.
  • Ability to obtain a TS/SCI clearance upon hire.

Responsibilities

  • Perform thermal design, analysis, and testing of optical systems operating in harsh space and ground environments.
  • Perform thermal design and analysis tasks on complex mechanical hardware, including precision mechanisms, electromechanical devices, aerospace mechanism design, complex electronics packaging, space-based deployable mechanisms, avionics, and innovative thermal and ground-based systems.
  • Create and analyze design concepts using finite element analysis and thermal analysis software.
  • Support requirements derivation and verification, system architecture development, loads derivation, trade studies, design sensitivity and optimization studies, preliminary and final design analysis, and generation of analysis documentation, presentation materials, and deliverable data packages.
  • Lead system test activities.
  • Organize thermal design and analysis as an IPT lead and interface frequently with customer technical leads and management.
  • Document and present design and analysis results to customers at formal gate and design reviews.
  • Develop thermal test plans to manufacture and test payload sensor systems.
  • Support new business opportunities and mentor junior-level staff.
  • Work on multiple tasks in a fast-paced environment and adapt to changing situations.

Desired Qualifications

  • An active TS/SCI clearance is preferred.
  • Experience with thermal analysis of mechanical and electronic systems in space, air, or ground environments.
  • Strong analytical skills with an emphasis on using or directing finite element analysis.
  • Experience with finite element analysis software.
  • Ability to support design decisions with well-documented engineering analyses and calculations.
  • Ability to analyze problems and quickly focus on and identify root causes.
  • Experience as a lead engineer, project engineer, or IPT lead is a plus.
  • Experience with Microsoft Office tools, including Word, Excel, and PowerPoint.

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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