Hardware Engineer

Who We Are:Aurelius Systems is a VC backed defense tech startup building autonomous, edge deployed directed energy systems for counter-UAS. We build laser weapons to shoot down drones.We're a small team of ~10 engineers, former US military operators, and subject matter experts scaling America's directed energy dominance. The first cost effective, reliable and robust laser weapon system.Our namesake isn't an accident. Marcus Aurelius wrote about doing the work in front of you, every day, without excuses. Henry Ford didn't wait for permission to reinvent manufacturing. That's how we operate — small team, unreasonable output, no hiding behind the unachievable.In addition to our San Francisco lab, we opened our Detroit manufacturing hub and field test weekly on our own 400-acre private range.If you are the kind of engineer who'd rather see your work on a range than in a lab, read on.The Role and Your Impact:We need a Hardware Engineer who can own structural and thermal design for a laser weapon system being built from scratch. You'll run FEA, develop thermal solutions, and drive prototype validation. This isn't a simulation role. You'll be in the lab building things, in the field breaking them, and back at the bench fixing them.Concept through production. Hands on the whole way.What You'll Own:Develop and validate thermal solutions — passive and active — for high power laser modules including conjugate heat transfer and transient thermal simulationsPerform stress, vibration, and modal analyses using ANSYS, SolidWorks Simulation, or equivalent and use results to optimize designs for durability, weight, and dynamic loadsCreate and refine CAD models for thermal management and structural prototypesDrive hands on prototyping via CNC, additive, or rapid fabrication with an extreme bias toward testing. This includes plan and execute vibration, shock, environmental, and robustness tests under real field conditionsConduct DFM reviews to optimize geometry, tolerances, and material selection and work directly with suppliers and fabricators to get designs into productionEvaluate metals, polymers, and composites for mechanical strength, thermal conductivity, and EMI compatibilityGenerate BOMs, GD&T drawings, and assembly instructions and oversee prototype-to-production transition in compliance with MIL-STD and ITAR requirementsPartner with optics, electronics, firmware, and controls teams during system assembly, integration, and field testing on our rangeWhat We're Looking For:2 to 8 years in mechanical or hardware engineering in defense, aerospace, or a related fieldExpert in CAD — SolidWorks, Creo, or similarStrong FEA background — ANSYS, SolidWorks SimulationThermal analysis experience with CFD and heat transfer softwareHands on mechanical prototyping and test fixture developmentExperience planning and executing vibration, shock, and environmental testingSolid foundation in materials science, stress analysis, and manufacturing methodsWhere you probably come from: aerospace structures, defense hardware, robotics, EV thermal systems, or any program where you owned hardware from design through field validation.We want to talk if: You've taken a mechanical system from CAD to field test, you've broken your own hardware and fixed it faster the second time, and you think in failure modes before the first prototype is built.Not a fit if: Your experience is primarily simulation and analysis with limited hands-on build and test time, or you've never supported field testing of real hardware.Nice to Haves:Vacuum or environmental chamber testing experienceFamiliarity with laser safety standards and optical alignment fixturesBackground in EMI/EMC design and shieldingSecurity clearance or ITAR compliance experienceEducation:BS or MS in Mechanical Engineering, Aerospace Engineering, or related field. What you've built matters more than where you went to school.How You Operate:Extreme bias for action. You'd rather build a prototype tomorrow than model it for a monthYou characterize your own systems before the field doesComfortable with ambiguity and fast iteration in a startup environmentYou debug from first principles, not intuition aloneClear communicator across mechanical, electrical, optical, and software teamsSelf directed. You identify what needs to happen next and do it without being toldWhy Join Aurelius Systems:Build more in 1 month than most engineers build in 1 year. We field test weekly. Your work goes downrange, not into a filing cabinet. Career velocity is real. At ~10 engineers, there are no layers between you and impact. Work on a problem that actually matters. Small cheap drones are changing warfare. Our laser systems are the asymmetric answer — infinite magazine, near zero cost per shot, scalable to every base, border, facility, and truck. Join the densest defense startup ecosystem in the country. California is where the next generation of defense companies are being built. How We Work:Core hours are Monday through Friday, 9 to 6. When we're sprinting toward a demo or field test, the team ramps up — nights, weekends, whatever it takes to ship. When the sprint lands, we ramp down. We don't manufacture intensity for show.Benefits:Competitive salary and equityUnited Health Care medical, dental, and vision coverageFlexible 18 days PTO plus 5 sick daysTravel to field test events and range daysCovered daily lunches and office snacks and drinksE-bike and scooter stipend up to $500Direct access to leadership and real ownership over your workExport Control Notice:This role requires access to export-controlled information or items that require U.S. Person status. As defined by U.S. law, individuals who are any one of the following are considered to be a U.S. Person: (1) U.S. citizens, (2) legal permanent residents (a.k.a. green card holders), and (3) certain protected classes of asylees and refugees, as defined in 8 U.S.C. 1324b(a)(3).Don't Check Every Box:We care more about what you've built and broken than how your resume reads. If you thrive in environments where the answer isn't in the textbook, we want to hear from you.Compensation Range: $110K - $150K