Job Title: Mechanical or Stack Engineer

Location: Houston, TX

About Solidec

Solidec is the path to emission-free molecules. We make low-cost chemicals and fuels out of thin air, offering the potential to reduce up to 40% of industrial carbon emissions. With our breakthrough technology, it is our mission to reverse decades of emissions and produce low-cost, sustainable chemicals for years to come.

Position Overview

We are looking for a mechanical or stack engineer to lead the design, prototyping, testing, and scale-up of our next-generation electrochemical reactor (electrolyzer) stacks. This role is central to advancing Solidec’s core technology and product roadmap. You will be responsible for designing flow fields, seals, current collectors, and housing components, ensuring high performance, manufacturability, and durability across operating conditions. The role spans from first-principles design and rapid prototyping to manufacturing support and field validation. This is a highly interdisciplinary position requiring close collaboration with electrochemical and process engineers.

What You’ll Be Doing

Lead the design, development, testing, and optimization of critical stack components
Optimize fluid flow distribution and heat transfer within the stack, using computational techniques like CFD to maximize stack performance and durability
Analyze and optimize stack to ensure robust sealing and uniform compression under various operating conditions
Develop detailed CAD models, engineering drawings, and manufacturing documentation for components
Conduct tolerance analysis and define mechanical assembly protocols for scale-up
Collaborate cross-functionally with electrochemical engineer, R&D engineer, and process/controls engineers to deliver integrated reactor solutions
Develop test fixtures and tools for stack performance validation
Analyzing data and presenting results to our technical team

What We’re Looking For

Bachelor’s degree in Mechanical Engineering, Chemical Engineering, Electrical Engineering, or a related field of study
Advanced degree in Mechanical Engineering, Chemical Engineering, Electrical Engineering, or a related field of study OR 5+ years of industrial experience with electrochemical cell stacks (e.g., fuel cells, electrolyzers, or electrodialysis)
Hands-on experience with electrochemical system design >1 kW capacity and characterization techniques
Proficient in CAD (SolidWorks preferred) and CFD tools (e.g., COMSOL, Fluent)
Strong understanding of stack mechanics, sealing design, and thermal management
Familiarity with tolerance analysis and modular assembly
Experience with prototype fabrication, testing, and debugging of mechanical systems
Demonstrated ability to take complex mechanical components from concept to design, prototyping, and production
Ability to learn/work efficiently
Strong communication skills (written and oral)
Prioritization of safety in the laboratory
Ability to move 25 pounds

Characteristics We’re Looking For

Individuals with enthusiasm and conviction for creating global impact
Innovators to develop transformative solutions
Engineers who thrive in fast-paced, high-ownership environments
Collaborators who excel in working with others
Problem-solvers with a can-do mindset who can navigate uncertainty and iterate quickly

Why Solidec?

People: We care for people, not just our product.
Innovation and Impact: Join our team to deliver new technologies to market that will have long-standing effects on our climate.
Learning: We are a small team, so every day brings a new challenge that we get to solve together.
Growth Opportunities: We are growing quickly, and so will you. We will reward you for it.
Competitive Benefits: We offer competitive salary, equity options, insurance, and flexible vacation.

Benefits

Competitive salary and equity package
401K
Medical/dental/vision
Unlimited vacation policy

Interested?

If you are passionate about sustainability and solving climate challenges, we want to hear from you! Please submit your application; we look forward to seeing if we might be able to work together.

Solidec

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Mechanical or Stack Engineer