
Test Engineer, R&D
Aurelius Systems • San Francisco, California, United States
Salary: $130,000 - $170,000 / year
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Role & seniority
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Test Engineer, R&D (individual contributor)
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Builds test infrastructure for prototype-to-production directed energy/counter-UAS systems
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Stack/tools
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Test automation: Python
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Bench/test instruments: oscilloscopes, logic analyzers, power supplies, DMMs
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Test hardware: electrical wiring, harness fabrication, fixtures, instrumentation
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Simulation environments: SIL/HIL/HITL (to be built)
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Safety/standards: exposure to safety-critical practices (e.g., MIL-STD/DO-178) is a plus
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Top 3 responsibilities
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Design, execute, and analyze end-to-end tests (setup → operation → data collection → teardown → failure writeups)
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Wire and instrument test setups: harnessing, fixtures, and high-power/high-voltage test instrumentation
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Build and automate test procedures in Python; develop pass/fail criteria, acceptance criteria, and readiness gates
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Must-have skills
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Strong electrical wiring and hands-on bench skills (scopes, analyzers, power supplies, DMMs)
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Python/scripting capability to build automated test tooling
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Debugging across firmware + power rails + electrical hardware; root cause from first principles
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Reliability/performance/safety testing mindset with meaningful logging and clear written failure reporting
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Experience with real electromechanical products where you built test code and wired your own setups
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Nice-to-haves
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Prior HIL/SIL environment build experience
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Famil
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Full Description
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
We're hiring a Test Engineer, R&D to build our test infrastructure from the ground up: test automation, harnessing, simulation, HITL environments, etc
You'll work closely with hardware, software, and electrical teams to define what needs testing and why, then build the tooling to test it. You're responsible for the process end to end: Test design, execution, analysis, and driving design through findings.
If you're driven to understand how and why robotic systems strain, and to catch these strains before they fail, we'd love to meet you.
What You'll Own
Testing end-to-end: setup, operation, data collection, teardown, post-test analysis, and failure writeups Wire test electronics, build harnesses, instrumentation setups, and test fixtures Develop automated test procedures in Python Debug across firmware, power rails, and electrical — root cause from first principles Work directly with embedded, electrical, and mechanical engineers to reproduce bugs, validate fixes, and prevent regressions Develop test plans, acceptance criteria, and readiness gates as we move from prototype to production Partner with the hardware team on DFM and production readiness Build HIL and SIL test environments Enforce safety procedures in high-power, high-voltage testing environments
What We're Looking For
Strong electrical wiring and bench skills — scopes, logic analyzers, power supplies, DMMs, harness fabrication Python or scripting for test automation. You build your own tools. Strong debugging instincts across firmware, power rails, and electrical Comfort with DFM concepts — you understand how production constraints shape what's testable Performance, reliability, and safety testing as a combined skill set. You know how to stress a system, log what breaks, and define pass/fail criteria that actually matter. Clear written communication around failures and root cause. Your test reports tell a story, not just a data dump. Robotics or defense companies with real electromechanical products where you wrote test code and wired test setups.
Not a fit if: Your test experience is purely environmental/mechanical (vibe table, thermal chamber operator). Your debugging stops at the firmware layer. You've only operated someone else's test infrastructure. You've never wired your own bench setup. Your test experience lives entirely in Jira.
Nice-to-Haves
HIL or SIL test environment build experience (we'll need to build these — having done it before is a plus, but not required day one) MIL-STD, DO-178, or other safety critical testing standards exposure (even if informal) Environmental, vibration, thermal, or shock testing exposure High-voltage or high-power test environment experience Familiarity with ITAR-controlled systems or working in cleared environments Active security clearance or ability to obtain one
Education
BS in Electrical Engineering, Mechatronics, Aerospace, or equivalent. Equivalent hands-on experience also considered.
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're building You debug from first principles, not Stack Overflow Clear communicator across mechanical, electrical, optical, and software teams Self-directed. You identify what needs to happen next and do it without being told
Why 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 + equity United Health Care medical, dental, and vision coverage Flexible 18 days PTO + 5 sick days Travel to field test events and range days Covered daily lunches and office snacks + drinks E-bike / scooter stipend ( Up to $500) Direct access to leadership and real ownership over your work
Export 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).
Compensation Range: $130K - $170K