Electrolyzer Design Engineer for Spacecraft Mobility

General Galactic; El Segundo (CA); On-site; USD 110,000 - 170,000; Full time

Benefits offered by this job

Medical benefits

PTO

401k

Stock options

Job summary

General Galactic is seeking an Electrolyzer Mechanical Design Engineer to lead development, scale-up, and integration of high‑pressure water electrolyzer tech for Triton, our core system enabling mobility in space. You will own Triton designs from requirements definition through prototyping, qualification, and flight while applying fluids, thermal analysis, and electrochemistry to real hardware.

This hands-on role requires breaking problems to first principles, performing design and test

Qualifications

• BS in mechanical engineering, chemical engineering, or a related technical field.
• 2+ years designing, analyzing, building, or testing complex electrochemical, mechanical, fluid, or thermal systems.
• Hands-on experience designing, assembling, or testing electrochemical stacks, batteries, or similarly complex sealed hardware.
• Familiarity with electrolytic cells, fuel cells, batteries, or other stacked electrochemical/thermal hardware.
• Strong fundamentals in fluid mechanics, thermodynamics, heat transfer, compressible flow, mechanical design, and structural load paths.
• First-principles problem solving and ability to work with partial information.
• Proficient in hand calculations, spreadsheets, Python, MATLAB, CAD, FEA, and CFD.
• Strong CAD, drawing creation, tolerancing, material selection, manufacturability, assembly, and testability.
• Experience with high-pressure systems, hazardous fluids, oxygen/hydrogen systems, leak testing, and safe test operations.
• Experience in a fast-paced startup or similar environment with high ownership and hands-on collaboration.

Responsibilities

• Own electrochemical hardware design, testing, and analysis to redefine mobility in space.
• Design, analyze, build, and test electrolyzer components and integrated stacks for performance and robustness.
• Use hand calculations and simulations to optimize stack sealing and electrochemical efficiency.
• Perform root-cause analysis of prototyping and production issues and implement data-driven design improvements.
• Contribute to Genesis systems including fuel cells, dehumidifiers, and thermal control systems.
• Conduct mechanical, fluid, and thermal analyses for sizing and characterization.
• Create drawings, interface definitions, assembly procedures, test procedures, and engineering documentation.
• Support testing of fluid and propulsion systems.
• Lead system safety assessments and hazard controls.

Skills

First-principles problem solving

CAD

Data analysis

Hands-on hardware testing

Python

MATLAB

Education

BS in mechanical engineering or chemical engineering

Tools

CAD

Python

MATLAB

FEA

CFD

Job description

General Galactic is seeking an Electrolyzer Mechanical Design Engineer to lead development, scale-up, and integration of high‑pressure water electrolyzer tech for Triton, our core system enabling mobility in space. You will own Triton designs from requirements definition through prototyping, qualification, and flight while applying fluids, thermal analysis, and electrochemistry to real hardware.

This hands-on role requires breaking problems to first principles, performing design and test