Prototype CNC Programmer​/Machinist IV-Day Shift

About Firefly Aerospace

Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space – anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24‑hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond.

Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.

Our Innovation Lab is a fast‑paced, technology‑focused environment dedicated to developing new technologies and rapidly advancing their Technology Readiness Levels (TRLs). Operating on accelerated timelines, the Lab brings together engineers, scientists, and skilled tradespeople into fully integrated teams to move from concept to working prototype ry team member plays a critical role in compressing development cycles and enabling breakthrough results.

The Prototype Machinist is a key technical contributor within the Innovation Lab, serving as the primary manufacturing resource for R&D and new product development programs. This individual partners directly with engineers to translate designs into machined hardware, advise on design‑for‑manufacturability, and execute precision parts on both CNC and manual equipment. The ideal candidate thrives in a collaborative, high‑tempo environment, is passionate about enabling innovation, and takes pride in delivering accurate, high‑quality hardware under demanding schedules.

• Operate and program Mazak Integrex multi‑tasking machining centers and Mazak Nexus turning centers for prototype and low‑volume R&D hardware.
• Perform on‑machine programming of less complex parts using Mazatrol conversational control at an advanced level.
• Develop and optimize CNC programs using Mastercam CAM software for complex geometries, multi‑axis toolpaths, and prototype features.
• Select tooling, speeds, feeds, and cutting strategies appropriate for prototype quantities and a variety of engineering materials.

• Set up and operate manual mills and lathes for one‑off prototype features, secondary operations, and rapid design iterations.
• Apply sound machining practice and craftsmanship to maintain tight tolerances on manual equipment.

• Design and build all own work holding setups, fixtures, and soft jaws to support prototype requirements with minimal lead time.
• Partner with engineering to develop setup strategies that balance speed of iteration with accuracy and repeatability.

• Engage with engineers early in the design process to provide DFM guidance that reduces lead time and cost without compromising design intent.
• Identify manufacturability risks and propose alternative geometries or processes to accelerate the prototype cycle.
• Participate in design reviews and engineering meetings as the manufacturing subject matter expert.

• Perform first‑article and in‑process hand inspection using calipers, micrometers, gauges, and other standard metrology tools.
• Verify parts to engineering drawings and models, document non‑conformances and support engineering dispositioning of deviations.

• Collaborate with engineers on the assembly of prototype hardware, providing machining expertise during fit‑up and integration.
• Perform minor modifications and rework during assembly as required to meet design intent.

• Train engineers and Innovation Lab staff on the safe and effective use of CNC and manual machining equipment.
• Support a parallel‑pathing culture where engineers can contribute to machining tasks under supervision, increasing prototype throughput.
• Develop best‑practice documentation for Lab machining projects.

• Minimum 7 years of hands‑on machining experience, with…