Lead Electrolyzer Mechanical Design Engineer

Gengalactic; El Segundo, Northern (CA, KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

General Galactic in El Segundo, CA, seeks an Electrolyzer Mechanical Design Engineer to lead the development, scale-up, and integration of Triton stack designs for space mobility. You will own designs from requirements through prototyping, qualification, and flight, with strong ownership and hands-on execution.

You will apply mechanical design fundamentals, fluids, thermal analysis, and electrochemistry to real hardware, breaking problems into core principles and delivering robust, testable

Qualifications

• BS in mechanical engineering or chemical engineering or a related technical field.
• 2+ years of experience 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, plate-and-frame heat exchangers, or other stacked electrochemical/thermal hardware.
• Strong fundamentals in fluid mechanics, thermodynamics, heat transfer, compressible flow, mechanical design, and structural load paths.
• First-principles approach to problem solving even with incomplete or partial information.
• Ability to perform practical engineering analysis spanning hand calculations, spreadsheets, Python, MATLAB, CAD, FEA, and CFD.
• Strong mechanical design skills, including CAD, drawing creation, tolerancing, material selection, manufacturability, assembly, and testability.
• Familiarity with high-pressure systems, hazardous fluids, oxygen compatibility, hydrogen systems, leak testing, cleanliness, and safe test operations.
• Experience in a fast-paced startup environment or similar, with high agency, strong ownership, and willingness to work hands-on across disciplines.

Responsibilities

• Own electrochemical hardware design, testing, and analysis at General Galactic to redefine mobility in space.
• Design, analyze, build, and test electrolyzer components and integrated stacks, with a focus on performance, mechanical robustness, and cost-effectiveness.
• Leverage hand calculations and simulation tools to optimize stack sealing performance and electrochemical efficiency.
• Conduct root cause analysis of issues in prototyping and production to troubleshoot and make data-driven design improvements.
• Contribute to other Genesis systems, including fuel cells, dehumidifiers, and thermal control systems.
• Perform mechanical, fluid, and thermal analyses for system sizing and characterization.
• Create drawings, interface definitions, assembly procedures, test procedures, and engineering documentation for electrolyzer and affiliated hardware.
• Support testing of fluid and propulsion systems.
• Lead system safety assessments and hazard controls.

Skills

Mechanical design

Electrochemistry

Fluid dynamics

Thermodynamics

CAD

FEA

CFD

Python

MATLAB

Problem solving

Education

BS in mechanical or chemical engineering

Tools

CAD

FEA

CFD

Python

MATLAB

Job description

General Galactic in El Segundo, CA, seeks an Electrolyzer Mechanical Design Engineer to lead the development, scale-up, and integration of Triton stack designs for space mobility. You will own designs from requirements through prototyping, qualification, and flight, with strong ownership and hands-on execution.

You will apply mechanical design fundamentals, fluids, thermal analysis, and electrochemistry to real hardware, breaking problems into core principles and delivering robust, testable