Principal Mechanical Engineer **POSITION SUMMARY:** Responsible for the design, analysis, testing, and manufacturing support of mechanical components in power conversion and plasma source products. Must be multi-faceted in all aspects of mechanical engineering and willing to take ownership of designs. Most important areas of expertise are heat-transfer and materials science. **ESSENTIAL RESPONSIBILITIES:** + Independently prepares detailed and optimized mechanical designs of high power electronics packaging and vacuum chambers. + Own the design and documentation of sheet metal, injection-molded, and machined parts. + Participates in a multi-disciplined design team and is active in supporting new platform development activities. Design team interaction with Asia locations and within the US. + Makes mathematical calculations to determine dimensional and positional variation (tolerance stack-ups) for mechanical components. + Engineering simulation experience, including thermal, structure, and fluid-flow. + Experiment design and data acquisition, such as temperature measurements, stress/strain measurements. + Takes into account solid material properties, behaviors, and failure modes of: polymers, metals, and ceramics. + Design and carry-out experiments to assess component durability or performance. + Interacts with manufacturers to produce manufacturable and cost efficient parts. + Considers method of fabrication during the design process – including machining, grinding and forming – in order to produce a manufacturable, optimized design. + Provide guidance to Mechanical Designers and Drafters. + Participates in the manufacturing and re-work of prototype parts, including 3D printing. **WORK ENVIRONMENT:** + Work is split between a standard office environment, an engineering lab, and/or clean room. 10% travel to international destinations. **SKILLS & EXPERIENCE:** + Bachelor’s Degree in Mechanical Engineering or Materials Science. + Minimum of 5 years of related design experience. + Advanced knowledge of Solid Works or other 3D modeling software. + Must have a working knowledge of Geometric Dimensioning and Tolerancing per ANSI Y14.5. + Experience in thermal analysis, hand calculations, and engineering simulation software. Ansys preferred. + Experience with plasma processing and manufacturing, knowledge of materials, purity, cleanliness required for semiconductor wafer processing. + Demonstrated experience with vacuum equipment as applied to plasma processing. + Knowledge of materials science to design parts to withstand harsh plasma environments. + Working knowledge of manufacturing process in metal machining, sheet metal, injection molding. + Expertise in thermal instrumentation and experimental design validation. + Prefer ability of scripting in Python or MatLab to support data acquisition and design simulation. + Prefer experience in developing anodization for corrosive atmospheres.