Magrathea is a San Francisco-based company that extracts magnesium metal from seawater and waste brines using a next-generation electrolytic, carbon-neutral process.
<p></p> <p><span style="font-size: 12pt;"><strong>About Magrathea</strong></span></p> <p><span style="font-size: 12pt;">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.</span></p> <p><span style="font-size: 12pt;"><strong>Is Magrathea For Me?</strong></span></p> <p><span style="font-size: 12pt;">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.</span></p> <p><span style="font-size: 12pt;"><strong><span style="font-family: arial, helvetica, sans-serif;">About the Role</span></strong></span></p> <p><span style="font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif;">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. </span><span style="font-family: arial, helvetica, sans-serif;">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.</span></span></p> <p><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">This position requires creativity, initiative, sound technical judgment, strong operational problem-solving skills, and clear communication across pilot plant, laboratory, and demonstration plant environments.</span></p> <p><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><strong>What You’ll Do</strong></span></p> <ul> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Utilize piloting expertise to propose equipment/process innovations to execute development experiments at the demonstration plant.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Operate, troubleshoot, and optimize demo-scale electrolytic and high-temperature processing equipment.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Documenting pilot operational learnings for transfer to demonstration scale engineering and operations.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Travel to Arkansas to support commissioning, startup, and operational activities at Magrathea’s demonstration plant.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Diagnose and resolve mechanical, electrical, instrumentation, and process related issues.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Fabricate and modify custom equipment using cutting, grinding, welding, drilling, and tapping tools.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Design and modify piping, plumbing, electrical, and instrumentation systems.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Support PLC controls, sensor integration, wiring, and data logging systems.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Repair and perform preventative maintenance on pilot plant and laboratory equipment.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Maintain accurate experimental records, operational logs, and communicate learnings and observations.</span></li> <li style="font-size: 12pt; font-family: arial, helvetica, sans-serif;"><span style="font-size: 12pt; font-family: arial, helvetica, sans-serif;">Run pr