Sr. Process Development Engineer - Pyrolysis Test

About Charm   Our mission is to return the atmosphere to 280 ppm CO₂. We convert excess inedible biomass into carbon-rich bio-oil and inject it into underground storage for permanent carbon removal. At scale, we can use bio-oil to make fossil-free iron.   Our carbon removal efforts began in 2020 with initial purchases from customers like Stripe, Shopify, and Microsoft. Since then, we’ve scaled to thousands of tons of carbon removal, grown to over a hundred employees, and established three locations in San Francisco, Colorado, and Louisiana.   We're expanding our team of ambitious, creative, and hands-on problem solvers. We value psychological safety, collaboration, and continuous learning. We take calculated risks and treat mistakes as opportunities to improve. If you're excited about tackling big challenges, we encourage you to explore our company values.   Come help us reverse climate change. Gigatons or bust! About the Role  We're looking for a Senior Process Development Engineer to join our Pyrolysis Test Engineering team. Reporting to the Director of Pyrolysis, you will lead the development and scale-up of next-generation biomass conversion processes from pilot testing through commercial deployment. You will define experimental strategy, drive resolution of complex scale-up challenges, and provide technical leadership across R&D, Engineering, and Operations teams. This role requires deep process engineering expertise, strong technical judgment, and the ability to translate ambiguous experimental findings into robust, scalable industrial processes.