> Markdown version of [/jobs/ext/1427506-principal-fuel-systems-engineer-x-bat](https://www.wearedevelopers.com/jobs/ext/1427506-principal-fuel-systems-engineer-x-bat). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Fuel Systems Engineer (X-BAT) - **Company:** Shield AI - **Location:** Boston, MA, United States (Remote available) - **Contract:** Temporary contract - **Skills:** Computer-Aided Design, Artificial Intelligence, Computer Aided Three-Dimensional Interactive Application (CATIA), Computational Fluid Dynamics, SolidWorks (CAD), MATLAB, Software Tools, Systems Integration, Ansys - **Published:** July 24, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9054864/principal-fuel-systems-engineer-x-bat ## About the Role * B.S. or M.S. in Aerospace, Mechanical, or related engineering discipline. * 12-15+ years of experience in aircraft fuel systems, aerospace fluids, or propulsion integration. * Demonstrated expertise with fuel system design, analysis, and certification for manned or unmanned aircraft. * Deep understanding of fluid mechanics, thermodynamics, and CFD principles. * Proficiency with analysis and modeling tools (ANSYS Fluent, OpenFOAM, MATLAB/Simulink) and CAD software (NX, CATIA, or SolidWorks). * Strong technical leadership and mentoring experience within multidisciplinary teams. * Familiarity with FAA and MIL-STD certification requirements and validation testing. * U.S. Citizenship required. * For remote candidates - ability to travel up to 25%. * Ability to obtain a S//SAR level security clearance desired. * Experience with UAV, fighter, or ISR platform development. * Proven success leading complex fuel system programs from concept through flight test. * Knowledge of advanced or low-observable fuel system technologies, vapor suppression, and hybrid-electric integration. * Active or previous security clearance. ## Description Shield AI is seeking a Principal Fuel Systems Engineer to lead architecture, development, and validation of fuel systems for advanced AI-powered aircraft. In this role, you'll own the full lifecycle of fuel system design-from concept through flight testing-while mentoring others and driving technical excellence across our growing air vehicle portfolio. You'll tackle high-impact challenges: enabling efficient long-endurance flight, optimizing aircraft center of gravity, and developing robust, certifiable systems that perform flawlessly in extreme conditions. On-site or hybrid work is preferred; however, for highly qualified candidates, a remote arrangement may be considered with up to 25% travel. * Architect end-to-end fuel systems including storage, transfer, venting, and pressurization for next-gen autonomous aircraft. * Lead cross-functional integration between propulsion, structures, avionics, and thermal teams to ensure optimal system performance. * Conduct system-level modeling and analysis to predict flow behavior, vapor suppression, slosh dynamics, and thermal effects. * Define performance requirements and verification strategies for high-reliability components and assemblies. * Lead design reviews, technical trade studies, and risk assessments for critical systems. * Oversee supplier selection, qualification, and acceptance testing for pumps, valves, tanks, and sensors. * Support and guide ground and flight test campaigns; perform root-cause analysis for system anomalies. * Mentor engineers, establish best practices, and develop processes for system integration and testing. * Contribute to long-term technology roadmaps, including hybrid-electric and alternative fuel system architectures. ## Related Videos - [Cloud Vendor Lock-In - Is it just a new version of the Database Abstraction Layers?](https://www.wearedevelopers.com/videos/1185-cloud-vendor-lock-in-is-it-just-a-new-version-of-the-database-abstraction-layers) - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [ Secure Code Superstars: Empowering Developers and Surpassing Security Challenges Together](https://www.wearedevelopers.com/videos/422-secure-code-superstars-empowering-developers-and-surpassing-security-challenges-together) - [Crew Management System for Airlines: Plan duties for pilots & flight attendants worldwide](https://www.wearedevelopers.com/videos/1444-crew-management-system-for-airlines-plan-duties-for-pilots-flight-attendants-worldwide) - [Software stack under and over the hood of the fastest accelerating car in the world](https://www.wearedevelopers.com/videos/221-software-stack-under-and-over-the-hood-of-the-fastest-accelerating-car-in-the-world) - [Building a hypercar from scratch](https://www.wearedevelopers.com/videos/607-building-a-hypercar-from-scratch) ## Related Articles - [Latest Technology Trends 2023: 8 New Inventions That Will Change The World](https://www.wearedevelopers.com/magazine/164-latest-technology-trends-2023-8-new-inventions-that-will-change-the-world) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing)