Power Electronics - Thermal Engineer Senior Staff
Shield AI
Seattle, WA · $173k–$260k a year · Posted April 8, 2026
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Where Seattle, WA ranks
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November 2026
- #1Cities with the most jobs that do not need a four-year degree in the Pacific Northwest316 jobs · of 8
- #1Best cities for software and engineering jobs in the Pacific Northwest1,776 openings · of 14
- #2Best cities for energy and utilities pay after cost of living$180k · of 18
- #2Best cities for entry-level jobs that want AI skills in the Pacific Northwest17% · of 12
- #2Best cities for AI-skill jobs in the Pacific Northwest26% · of 17
- #2Best cities for software and engineering jobs in the West Coast1,776 openings · of 60
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
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How AI is used in this kind of work
AI use among electronics engineers, except computer is little observed so far. Measured exposure for electronics engineers, except computer: 10% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
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About the job
Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BAT aircraft, and Aechelon simulation and synthetic reality technologies. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit www.shield.ai. Follow Shield AI on LinkedIn, X, Instagram, and YouTube.
Job Description: Are you a passionate and innovative thermal engineer looking to help develop state of the art aircraft? Are you eager to make a positive difference in the world? Do you want to work alongside mission driven and values focused teammates? Shield AI is just the place for you!
As a Senior Staff Thermal Engineer at Shield AI, you will lead the design, analysis, and integration of aircraft avionics thermal management systems. We are designing a high voltage, high power system using custom power electronics and energy storage. This role is best suited for an engineer who thrives on first-principles problem solving, is comfortable with ambiguous, open-ended challenges, and can bridge technical disciplines with strong communication and collaboration skills and the ability to simplify and communicate complex problems. The engineer will be a key contributor in shaping designs, mentoring peers, and ensuring robust thermal solutions that meet mission-critical aerospace requirements.
What you'll do:
Own thermal analysis and design efforts for unmanned aerial vehicle avionics including custom power electronics
Develop and validate analytical, numerical, and computational models for heat transfer and fluid flow using hand calculations and CFD tools such as FloEFD
Provide technical leadership in trade studies, system architecture decisions, and risk assessments
Lead cross-functional teams designing power electronic circuits and environmental enclosures. Provide design requirements that impact circuit part selection, board layout, material selection, and other design aspects
Drive test planning, instrumentation, and data analysis to correlate models with experimental results
Mentor junior engineers and guide cross-disciplinary teams in applying thermal/fluid fundamentals
Communicate technical findings clearly through executive-level briefings, design reviews, and written reports
Proactively identify risks, propose solutions, and influence electrical and/or PCBA design direction
Required qualifications:
B.S. in Mechanical Engineering, Aerospace Engineering, or related discipline
Minimum 7 years of professional experience in avionics or electronics thermal engineering
Strong expertise in heat transfer (conduction, convection, radiation) and fluid mechanics
Deep understanding of active and passive cooling solutions and their integration at component and system level
Deep understanding of thermal management design elements including TIMs, spreaders, heat sinks, vapor chambers, heat pipes, and fans
Proficiency with thermal analysis and CFD tools (e.g., ANSYS Icepak, FloEFD, STAR-CCM+)
Proficiency with CAD design tools such as NX, SolidWorks, or similar
Demonstrated experience applying first-principles reasoning to complex engineering problems
Strong written and verbal communication skills, with a track record of leading technical discussions and presenting to stakeholders
Proven ability to learn and adapt quickly to new tools, processes, and technical challenges in a fast paced, startup environment
Ability to obtain a S//SAR level security clearance desired.
#LI-JM2 #LE
Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity
Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment)
Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. All offers are contingent on a cleared background and possible reference check. Military fellows and part-time employees are not eligible for benefits. Please speak to your talent acquisition representative for more information.
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Shield AI is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender identity or Veteran status. If you have a disability or special need that requires accommodation, please let us know.