Principal Propulsion Engineer

At Zone 5 Technologies, we're redefining what's possible in unmanned aircraft systems. Our team of engineers and innovators is developing cutting-edge autonomous solutions that push the boundaries of UAS technology - solving complex challenges that matter.

We're building the future of UAS capabilities, and we're looking for exceptional talent to join us. If you're driven by hard problems, energized by rapid innovation, and ready to make an impact on next-generation flight systems, you belong here.

The Principal Propulsion Engineer owns the design, analysis, and qualification of propulsion systems across Zone 5’s product line—spanning air-launched effects, tactical interceptors, and next-generation munitions. This role is responsible for ensuring propulsion systems perform reliably under demanding flight, launch, and mission conditions.

You will work across the full lifecycle—from concept and trade studies through design, test, qualification, and production—partnering closely with GNC, Systems Engineering, Manufacturing, and Integration & Test to deliver robust, scalable propulsion solutions.

Key Responsibilities

• Own the technical design and performance of solid rocket motor systems and supporting propulsion subsystems across multiple concurrent programs, from concept through qualification and production

• Lead internal ballistics, structural, and thermal analysis of motor cases, nozzles, propellant grains, igniters, and ignition safety components

• Drive static fire test campaigns and ground test infrastructure by defining test plans, instrumentation, and acceptance criteria, and own root-cause investigation when anomalies occur

• Translate system-level requirements (range, thrust profile, packaging constraints, rail/tube launch loads) into propulsion subsystem specs in close coordination with airframe and GNC

• Partner with manufacturing and supply chain to design for producibility and scale — Zone 5 builds in quantity, not just for demonstration

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