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Oakland, California, United States
Onsite
About Magrathea
Based in Oakland, California, Magrathea is a global category leader in critical mineral production technology. Our mission is to rebuild the magnesium metal supply base, delivering secure access to one of the most critical materials on Earth. Magnesium is essential to the aluminum, steel, titanium, nuclear, defense, and aerospace industries but 95% of global supply comes from China where large amounts of coal are used to make metal. This isn’t just an economic risk: it’s a national security threat, and Magrathea is fixing it. We’ve developed a next-generation electrolytic process to make magnesium metal from seawater and brines, unlocking a new path to industrial independence and to a cleaner environment for future generations. We’re backed by the earliest believers in Tesla and SpaceX, major European industrial families, and the U.S. Department of Defense. If you’re ready to make a lasting real-world impact, let's talk.
Is Magrathea For Me?
You’ll be joining a small, high-trust team of builders on a mission to stand up the first major electrolytic magnesium smelter this century. We’re doing it this decade. There are no pointless positions here, no layers of middle management, no meetings about meetings: just a deep focus on moving important work forward. You’ll be hands-on from day one, shaping the core of a technology that will have major impacts on national security, clean technology, and industrial resilience. If you’re the kind of person who is energized by hard, consequential problems, stays clear, calm, and effective when the work is ambiguous or urgent, and wants to build something that will matter far beyond the company, this role is for you.
About the Role
Magrathea is seeking a highly capable, hands-on Senior Process Engineer to support the development, operation, and scale-up of our revolutionary electrolytic process technology. The role is ideal for someone who thrives in a fast-paced R&D environment and combines strong mechanical, electrical, fabrication, and process troubleshooting skills with a practical, solutions-oriented mindset. The successful candidate will play a critical role in designing, building, operating, and improving pilot-scale systems, and transferring the knowledge gained to Magrathea’s demonstration plant in Southwest Arkansas.
This position requires creativity, initiative, sound technical judgment, strong operational problem-solving skills, and clear communication across pilot plant, laboratory, and demonstration plant environments.
What You’ll Do
What You Bring
Compensation & Benefits
A Note on Qualifications
Research shows that some candidates are less likely to apply unless they meet every listed qualification. We do not want that to stop the right person from reaching out. If you are excited by Magrathea’s mission and believe you can succeed in a hands-on, high-ownership role, we encourage you to apply even if you do not meet every requirement.
Join Us
If you’re looking for the most challenging, consequential, and meaningful engineering work of your career - this is the moment. Help us build the clean industrial base future generations will inherit. Help us restore independence to a security-critical strategic metal. Make history with us.