Job Location: Aspen, USA. The Product Design Engineer at Sun King's Clean Cooking Division will be a creative and curious contributor to three interconnected areas of development: the next generation of our Flow Monitoring and Control Device (FMCD) for LPG cylinders, next-generation manufacturing systems designed to scale clean cooking access globally, and groundbreaking new product applications built on our proprietary sensing technology. Working as part of an experienced engineering team, you will bring design thinking, hands-on prototyping ability, and a strong curiosity to explore ideas and build things — from early concepts and bench experiments through to refined designs ready for manufacture.

This role offers the rare opportunity to work on proprietary sensing technology with real expansion potential, travel to the field in Africa to engage directly with customers, and work alongside world-class manufacturers in India and China. If you are energized by complex problems that matter, this is the role for you.

Requirements

, user needs, and manufacturing constraints Contribute to the synthesis of field research, customer insights, and technical inputs into design directions and early-stage concepts Produce clear CAD models and design documentation (Onshape preferred) to communicate and develop ideas across the team Use AI-assisted tools selectively as a specialized accelerator for concept development, simulation interpretation, and design documentation Participate in design reviews, contributing thoughtful perspectives and creative alternatives Research and explore flow sensing and MEMS sensor technologies Conduct exploratory research into flow sensing approaches for LPG metering — including thermal mass flow, ultrasonic, and MEMS-based sensors Build working knowledge through hands-on experimentation: bench testing, teardowns, and fundamental investigation Synthesize findings clearly to help the team evaluate technology options and make informed design choices Investigate new applications of Sun King's developed proprietary flow sensing technology in adjacent industries and markets beyond LPG cooking Work closely with electronics and firmware teammates to gain insight into system-level integration

Build rapid, hands-on hardware prototypes Build physical prototypes quickly and resourcefully using whatever fabrication methods best fit the problem: FDM/SLA 3D printing, laser cutting, manual and CNC machining, casting, hand fabrication, and more Test prototypes rigorously, think critically about results, and iterate quickly Use simulation tools where appropriate to inform or validate design choices (FEA, CFD, or equivalent) — curiosity and willingness to learn are valued as much as prior experience Keep clear, useful records of experiments and iterations to build collective team knowledge Help grow and maintain the team's prototyping lab tools and capabilities Travel to field markets in Africa to inform product development Visit customers and stakeholders in Kenya, Tanzania, Zambia, and other African markets to conduct interviews, observe usage patterns, and gather direct product feedback Translate field insights into new product concepts and application-specific designs — including burners optimized for low flow rates and high thermal efficiency Develop first-hand knowledge of end-user needs, cooking behaviors, and market constraints that feed directly back into the design process Travel to manufacturer sites in India and China to contribute to production development Work alongside manufacturing partners to contribute to the development of next-generation production systems designed for modularity and scalability Contribute to the team's goal of reaching production volumes in excess of 40,000 units per month, contributing design and process ideas