R&D Mechanical Design Engineer

Location: Lewisville, TX
Department: Engineering
Employment Type: Full-Time

The Mechanical Design Engineer plays a key role in the development, design, testing, and continuous improvement of Moonshot’s mission-critical power distribution products for the data center market.

This position is intended for an experienced mechanical engineer who can take ownership of complex engineering problems from concept through production. The engineer will develop mechanical systems and assemblies for low‑and‑medium‑voltage power distribution equipment while working closely with Electrical Engineering, Manufacturing, Quality, Supply Chain, and external suppliers.

The ideal candidate combines strong hands‑on mechanical design skills with practical manufacturing experience and an understanding of electrical power distribution equipment. This role will also provide technical leadership, mentor other engineers, and help establish scalable design practices as Moonshot continues to grow.

• Lead mechanical design and development of low‑ and medium‑voltage power distribution equipment, including panel board, switchboard, and switch gear enclosures.
• Translate customer specifications, electrical requirements, regulatory requirements, and manufacturing constraints into practical mechanical designs.
• Develop concepts, 3D models, detailed drawings, assemblies, and complete manufacturing documentation using Solid Works.
• Own mechanical designs from concept and detailed design through prototype builds, testing, and production release.
• Develop and maintain engineering bills of material, fabrication drawings, specifications, work instructions, and revision‑controlled product documentation.
• Collaborate closely with electrical and controls engineers to integrate bus systems, circuit breakers, controls, metering, cable entry, grounding, and other electrical components into mechanical assemblies.
• Apply design‑for‑manufacturing and design‑for‑assembly principles to improve product quality, reduce cost, simplify assembly, and increase reuse of standard components.
• Plan and run design verification and certification testing. Define test objectives, sample configurations, and acceptance criteria, and feed the results back into the design.
• Support prototype and pilot builds, and work directly with manufacturing teams to resolve design, assembly, and quality issues.
• Participate in root‑cause analysis and develop corrective actions for product and manufacturing issues.
• Create and manage engineering changes, redlines, deviations, and other product configuration documentation.
• Work directly with suppliers and fabricators on sheet metal, machining, welding, forming, painting, gasketing, insulation, and related manufacturing processes.
• Coordinate engineering deliverables and help establish priorities and schedules to support customer and production commitments.
• Develop and improve engineering standards, design guidelines, calculation methods, documentation practices, and product development processes.

• Bachelor’s degree in Mechanical Engineering or a related engineering discipline.
• 5–10 years of professional mechanical design experience in product development.
• Advanced proficiency with Solid Works or comparable 3D parametric CAD software.
• Strong experience designing sheet‑metal assemblies, structural frames, fabricated components, and mechanical enclosures.
• Experience creating and releasing complete manufacturing documentation packages, including drawings, BOMs, specifications, and engineering changes.
• Demonstrated ability to independently solve complex mechanical design and manufacturing problems.
• Experience working directly with manufacturing personnel, suppliers, and cross‑functional engineering…