Principal Engineer, Fluid & Thermal Systems (R4793)
- Location
- Seattle, WA
- Listed
- Today
About the role
Are you an experienced and innovative Fluid & Thermal Systems Engineer looking to help shape the future of AI and robotics technology? Are you eager to make a meaningful impact on cutting-edge products that matter? Do you thrive in a fast-paced, mission-driven environment alongside highly motivated and values-focused teammates? Shield AI is the perfect place for you!
As a Staff Fluid & Thermal Systems Engineer at Shield AI, you will lead the design, development, and optimization of fluid and thermal systems for our advanced autonomous UAVs and ground systems. Your expertise fluid & thermal system design will drive innovation, prototyping, testing, and the successful integration of solutions that operate reliably in challenging environments. This role requires technical leadership, collaboration with cross-functional teams, and an unwavering commitment to delivering excellence from concept to production.
What you'll do
- Own design and analysis of fluid and thermal systems for aircraft and ground platforms.
- Develop and implement innovative thermal solutions
- Use first-principles engineering to drive design decisions to yield optimal solutions
- Research technologies for integration into complex solutions
- Conduct advanced simulations to predict system performance and refine designs
- Execute testing and validation efforts, including data acquisition, post-processing, and verification against requirements
- Collaborate with cross-disciplinary teams to integrate fluid and thermal system designs into larger system architectures.
- Mentor and guide junior engineers, fostering technical growth and excellence within the team.
- Identify suppliers and build successful supplier management relationships for procurement of components or systems for fluid and thermal system designs
- Other duties as assigned
Required qualifications
- Minimum 10+ years of experience in Fluid or Thermal System design, with a proven track record of technical excellence.
- B.S. or advanced degree in Mechanical, Aerospace, or related Engineering discipline.
- Deep understanding of heat transfer, fluid dynamics, thermodynamics, and system-level thermal management.
- Experience implementing system models in commercial tools, such as MATLAB Simscape, Amesim, etc.
- Experience developing custom engineering models in Excel and in languages such as MATLAB, Python, etc.
- Experience in fluid and thermal system testing, including sensor integration, data acquisition, and analysis.
- Expertise in 3D CAD modeling tools such as Siemens NX or equivalent.
- Demonstrated ability to execute projects with minimal oversight, assume full ownership, and deliver exceptional outcomes.
- Excellence in supplier management, COTS component sourcing, optimization/trade studies
- Proven success in dynamic, fast-paced environments.
- Ability to obtain a S//SAR level security clearance desired.
Preferred qualifications
- Extensive experience with fluid & thermal system design, analysis, manufacture and test for aircraft
- Familiarity with fluid and thermal system effects on aircraft performance
- Familiarity with startup or R&D environments, demonstrating adaptability and agility under pressure.
- Strong knowledge of environmental standards and certification processes for aerospace or defense systems.
- A passion for innovation and the ability to push boundaries in fluid & thermal system development.
- #LI-MS1
- #LF
- 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.
About Shield Ai
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.
Equal opportunity and legal notices
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.
From Shield Ai's careers page, first listed on Rolev.ai on November 12, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
Rolev.ai is a job search and application tool for US job seekers. For this Principal Engineer, Fluid & Thermal Systems (R4793) role at Shield Ai, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.
See how you fit
Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.
Tailor without inventing
Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.
Draft the full kit
Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.
1-Click Extension Autofill
The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.
Similar roles
- Principal Engineer, Enterprise Scalability (Remote - East Coast Only)Klaviyo · Boston, MA
- Principal Engineer - QualityMicrochip · Boulder, CO
- Principal EngineerGreenpoint Technologies · Bothell, WA
- Principal Engineer TL/M - Software Development (PaaS)Aviatrix · Santa Clara, CA · $249k – $293k/yr
- Principal Engineer- CivilDepartment Of Animal Science - Iowa State University · Columbus, OH
- Principal Engineer, Systems Engineering, Sensor & Laser TechnologiesNevada State Assembly · US > Arizona > Phoenix
More at Shield Ai
All Shield AI jobsCommon questions
Where is the Principal Engineer, Fluid & Thermal Systems (R4793) job at Shield Ai located?
This Principal Engineer, Fluid & Thermal Systems (R4793) position at Shield Ai is located in Seattle, WA. Always check Shield Ai's application page for specific state eligibility or relocation policies.
How do I apply for the Principal Engineer, Fluid & Thermal Systems (R4793) position at Shield Ai?
This listing links directly to Shield Ai's Ashby application page. You can apply directly on Shield Ai's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.