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Shield AI

a16z — Backed by a16z
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Principal Engineer, Survivability (R4608)

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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 . Follow Shield AI on LinkedIn, X, Instagram, and YouTube.

Job Description:

At Shield AI, we're building the most intelligent autonomous aircraft ever deployed. As we push the boundaries of what’s possible in contested environments, we are looking for a Survivability Engineer to shape and optimize the low observable (LO) performance of our next-generation autonomous aircraft.

This role is ideal for an experienced engineer with expertise in radar cross-section (RCS) shaping, LO materials, and electromagnetic signature modeling who thrives in a fast-paced, mission-driven environment. You’ll work across disciplines to ensure our aircraft can survive, evade, and complete missions in highly contested airspace.

What you'll do:

  • Design and optimize low observable (LO) features across the airframe focusing on shaping, edge treatments, radar-absorbing materials, and subsystem integration.
  • Conduct modeling and simulation of electromagnetic signatures using industry-standard tools such as HFSS, CST Studio Suite, Xpatch, and SENTRi.
  • Work with multidisciplinary teams in propulsion, avionics, structures, and AI to ensure survivability is baked into the system architecture from day one.
  • Lead or support signature testing efforts, including indoor and outdoor RCS range tests, validation campaigns, and supplier-level hardware evaluations.
  • Translate mission threats and requirements into survivability features that address RCS, thermal, visual, and acoustic observability constraints.
  • Partner with materials scientists to mature radar-absorbing coatings and structural RAM for manufacturability and field durability.
  • Support internal and customer assessments, threat modeling reviews, and milestone decisions throughout the program lifecycle.

    • Required qualifications:

  • B.S. or M.S. in Aerospace Engineering, Electrical Engineering, Physics, or a related discipline.
  • 10+ years of hands-on experience in LO or survivability engineering, preferably on tactical aircraft, UAVs, or stealth systems.
  • Proficiency with EM simulation tools such as HFSS, CST, Xpatch, or SENTRi.
  • Strong understanding of RCS shaping principles, edge treatments, cavity suppression, and materials integration.
  • Practical experience with LO testing methods and RCS measurement equipment.
  • Familiarity with radar-absorbing materials (RAM), LO coatings, and structural LO trade studies.
  • Solid collaboration and communication skills with the ability to work across design, test, and manufacturing teams.
  • U.S. Citizenship and active Secret clearance required.
  • Ability to obtain a S//SAR level security clearance desired.

    • Preferred qualifications:

  • Experience with military UAV platforms or 5th-gen fighter programs.
  • Background in survivability analysis in contested environments (e.g., IADS, radar networks).
  • Familiarity with platform CONOPS, threat modeling, and mission-level survivability assessments.
  • Ability to contribute to the design, test, and fielding of a fully integrated LO platform.
  • Active Top Secret or SCI clearance.
    • #LI-AD6
    #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.
    ###
    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.
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    What this application asks

    lever

    Which location are you applying for?, Resume/CV, Full name, Email, Phone, Current location, Current company, LinkedIn URL, Twitter URL, GitHub URL, Portfolio URL, Other website

    • Are you authorized to work in the United States? choose one
    • Will you require sponsorship for employment now or in the future? choose one
    • If yes, what type of sponsorship? written answer · optional
    • This position may require access to information and technology that is subject to export controls, such as EAR. Are you any of the following? choose one
    • If you selected "A protected Individual" OR "Other" to the above question, please explain further. written answer · optional
    • Shield AI provides technology, services, and support to the United States military and allied forces with their various missions. If selected for employment with Shield AI, your contributions will directly relate to and/or support these missions. Are there any reasons why you would not be able to fully contribute in support of the U.S. military and allied forces? choose one
    • (Optional) If you selected other or would like to expand on the above, feel free to do so below: written answer · optional
    • How did you hear about us? choose one
    • If "Industry Conference" or "Other," please provide more details: written answer · optional
    • Please state your full legal name:
    • Are you a transitioning service member? choose one
    • If yes, what partnership program are you working with? choose one · optional
    • If other, please provide further details written answer · optional
    • When are you available to start your fellowship? written answer · optional
    • When are you available for full time work? written answer · optional
    • What full time job(s) are you applying for? written answer
    • Are you local to or willing to relocate? choose one · optional
    • What office(s) would you be willing to relocate to? (Select all that apply) yes / no · optional
    • If you selected international, what location(s)? written answer · optional
    • Do you have, or are you able to obtain, a S/SAR clearance? choose one · optional
    • This position requires an Active or the eligibility to obtain a U.S. DoD Secret Security Clearance (U.S. Citizenship Required). choose one · optional

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