High Voltage Electrical Engineer / Technician

High Voltage Electrical Engineer / Technician

Location : Bay Area, in-person preferred

About the Role

Thunderstone is looking for a hands-on High Voltage Electrical Engineer or Technician to become the cornerstone of our lab. You will be directly and solely responsible for the safe, reliable, and high-performance operation of our 100kV+ pulse power systems, including Marx generators.

Your work isn't just about maintenance; you will be the expert who designs, builds, and optimizes our core high-voltage technology, enabling rapid-fire experimentation and pushing the boundaries of what's possible in electrical breakdown and plasma generation.

This role can be full-time or part-time but requires on-call availability to keep our critical systems operational.

Responsibilities

• Take ownership of our high-voltage pulse power systems, including Marx generators and / or Cockcroft–Walton multipliers, ensuring they are always ready for experiments.
• Diagnose and fix issues quickly and efficiently, using diagnostic tools like oscilloscopes and multimeters. You'll work on everything from minor wiring adjustments to complex system optimizations.
• Enforce and improve our safety protocols and electrical standards. Your commitment to safety will be paramount.
• Collaborate directly with the engineering team to support fast-paced experimental setups and prototyping.
• Provide timely support for urgent troubleshooting or setup needs to prevent downtime and keep our experiments on track.
• Meticulously document system performance, safety checks, and improvements to help us build a scalable and robust operation.

Who We Are

Thunderstone is a deep-tech startup reinventing how the world accesses critical metals. Traditional mining is excavation-heavy, expensive, and environmentally destructive. We’re using underground lightning (high-voltage pulses) to open microscopic pathways in ore bodies, letting fluids flow and extract metals without digging.

Our work makes mining cleaner, cheaper, and scalable, unlocking the nickel, copper, and other metals the clean energy transition demands. We’re proud to be part of the Breakthrough Energy Fellows program, backed by world-class investors and strategic partners (including Rio Tinto).

If you want to be part of a company where your work doesn't just move experiments forward, but helps move the planet toward a sustainable future, Thunderstone is the place.

Requirements

10 kV) systems.

Benefits