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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 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’ve opened a Detroit manufacturing hub and we field test weekly on our own 400-acre private range. The Role & Your Impact: You'll own the beam train end-to-end, from simulation to field demo. You take Zemax models and turn them into hardware that works downrange. You run aberration analysis on long path, large aperture, broad frequency systems. You spec the optics, design the opto-mechanical assemblies, build ruggedized hardware, and align and characterize integrated systems on the bench and in the field. You'll work directly alongside our laser engineer on source-side trades, our mechanical team on integration, and our electrical team on system-level packaging. The laser engineer owns the source. You own everything between the source and the target. This is a senior role. We want someone who can walk into a design review and tell us about optical strategies we haven't already considered. What You'll Own: - Lead beam train optical design end-to-end - Own aberration mitigation on long path, large aperture, broad frequency systems - Spec and qualify optical components (lenses, mirrors, coatings, windows) for high power laser operation - Design ruggedized opto-mechanical mounts, housings, and assemblies for field-deployed environments - Run opto-mechanical tolerance analysis and validate designs through structural and thermal modeling - Lead optical alignment, characterization, and beam quality measurement on integrated systems - Support field testing end-to-end: setup, alignment, data collection, post-test analysis, failure writeups - Work directly with fabricators and vendors on DFM, tolerancing, and production readiness - Generate optical system documentation, drawings, and BOMs meeting MIL-STD and ITAR requirements What We're Looking For: - 5+ years (or PhD + 3 years) in opto mechanical design with shipped hardware - Optical system design in Zemax OpticStudio - Aberration mitigation experience on long path, large aperture, broad frequency systems - Industrial laser tooling background - Hands-on optical alignment and characterization experience - Mechanical design experience in CAD (SolidWorks preferred) for opto-mechanical mounts, housings, and assemblies - Understanding of thermal and structural effects on optical performance - Familiarity with high-power laser optics and their damage thresholds, coating selection, thermal lensing - Comfortable working across mechanical, electrical, and laser teams to integrate optical subsystems Not a fit if: Your experience is entirely theoretical or software-based with no hands-on optical bench or hardware integration work. We want to talk if you've designed a beam train, taken it from simulation to a working system, and put your hands on the alignment yourself. Education: BS or MS in Optical Engineering, Physics, Mechanical 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 month - Rigorous testing mindset. You characterize your own systems before the field does - Comfortable with ambiguity and fast, constantly iterating in a startup environment - Your brain only releases dopamine when you