Principal Engineer, Aircraft Thermal (r4353)

Shield AI Shield AI · Defense · Dallas, TX +1 · Remote · X-BAT Engineering - Mechanical

Principal Engineer, Aircraft Thermal at Shield AI, a deep-tech company focused on intelligent systems for defense. The role involves leading thermal analysis and characterization for unmanned aerial vehicles, architecting and validating models, defining test plans, and mentoring teams. Requires B.S. in Mechanical/Aerospace Engineering, 12+ years of experience in avionics/electronics thermal engineering, and expertise in heat transfer, fluid mechanics, and thermal management techniques for aircraft. Proficiency with thermal analysis/CFD tools and CAD is necessary. The role emphasizes first-principles problem solving and leadership in a mission-critical aerospace context.

What you'd actually do

  1. Lead thermal analysis and characterization efforts for unmanned aerial vehicle aircraft-level thermal systems.
  2. Architect and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations, finite difference methods, and CFD tools such as FloEFD.
  3. Provide leadership in trade studies, system architecture decisions, requirements generation, and technical risk assessments.
  4. Define and oversee test planning, instrumentation, and data analysis to correlate models with experimental results.
  5. Mentor and guide cross-disciplinary teams in applying thermal/fluid fundamentals.

Skills

Required

  • B.S. in Mechanical Engineering, Aerospace Engineering, or related discipline.
  • Minimum 12 years of professional experience in avionics or electronics thermal engineering.
  • Deep expertise in heat transfer (conduction, convection, radiation) and fluid mechanics.
  • Advanced understanding of active and passive cooling solutions and their integration at the component and system level.
  • Advanced knowledge of thermal management techniques for aircraft bays, engine bays, and hot surfaces.
  • Proficiency with thermal analysis and CFD tools (e.g., FloEFD, STAR-CCM+).
  • Proficiency with CAD design tools such as NX, SolidWorks, or similar.
  • Demonstrated ability to apply first-principles reasoning to complex engineering problems.
  • Ability to learn new and cutting edge materials knowledge and thermal management techniques from a variety of sources (technical papers, text books, etc.) and apply it to the development of advanced thermal management design.
  • Strong communication and leadership skills, with experience presenting to executives and customers.

Nice to have

  • M.S. or Ph.D. in a relevant engineering discipline.
  • Extensive experience with high-altitude aircraft thermal management, analysis, and design.
  • Familiarity with aircraft integration constraints (power, weight, volume, maintainability, safety).
  • Hands-on experience with thermal and fluid system testing, instrumentation, and validation.
  • Knowledge of materials and manufacturing methods relevant to aerospace thermal management.
  • Experience guiding trade studies, proposals, and customer interactions in aerospace or defense programs.
  • Background in multi-disciplinary system integration, spanning avionics, fluid systems, and systems engineering.

What the JD emphasized

  • mission-critical aerospace requirements