Director, Mechanical Engineering - CO2 Electrolyzers

Number of employees


Berkeley, California, United States

Posted on: 2024-04-08

Category: carbon

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Employment type:

Full time

Experience required:



Salary not provided

About the company:

We're Twelve, the carbon transformation company—a new kind of chemical company that makes things from air, not oil. Our breakthrough technology eliminates emissions by transforming CO2 into critical materials, products and fuels. 
When it comes to addressing climate change, carbon isn’t our nemesis. To the contrary, we see carbon as the element of change. Carbon isn’t just the building block of life, it’s the building block of the chemicals, materials and fuels that make up our modern world and power innovation. From the spring in our running shoes to our favorite electronics, to building materials, electric car parts and fuels, carbon makes it possible. The problem is we get this carbon today from fossil fuels in the form of petrochemicals, which creates CO2 emissions and accelerates climate change.
Carbon transformation fundamentally changes this paradigm by sourcing carbon from CO2 instead of fossil fuels. By replacing the fossil carbon in critical chemicals with renewable, recycled carbon from CO2, we can eliminate emissions from thousands of essential products and set a new standard for how things get made in the climate era.

Twelve is a new kind of chemical company built for the climate era. Our breakthrough technology eliminates emissions by turning CO2 into essential products. We are a team of scientists, engineers and problem solvers on a mission to fundamentally shift the way the world addresses climate change and lead the transition to a fossil free future with our carbon transformation technology.

Committed to sustainability and innovation, we are expanding our team and seeking an experienced Director of Mechanical Engineering to lead the development of Twelve’s CO2 Electrolyzer.

This is a full-time position based in Berkeley, CA.

Job Brief

As the Director of Mechanical Engineering - CO2 Electrolyzers, you will be at the forefront of driving advancements in CO2 electrolyzer systems. Reporting directly to the Vice President of Engineering, you will lead a dynamic team of engineers, playing a crucial role in the design, development, and implementation of mechanical systems that contribute to our mission of creating a greener and cleaner future.  

What You Will Do

  • Recruit, mentor, and develop a world-class mechanical engineering team that has industry-leading expertise in CO2 electrolyzer technologies.
  • Provide strategic direction and technical leadership for the mechanical engineering team, focusing on CO2 electrolyzer and supporting technologies.
  • Collaborate with cross-functional teams to align engineering efforts with the company's mission and objectives, staffing Twelve’s development projects appropriately. 
  • Support ambitious schedules while being responsible to and accountable for design integrity.
  • Develop and execute against the technology roadmap, ensuring it aligns with the evolving landscape of CO2 electrolyzer technology.
  • Manage and develop Mechanical Engineering for CO2 Electrolyzers as a Center of Excellence within Twelve, which means:
    • Mature Twelve’s best practices in Mechanical Engineering, including appropriate levels of process (e.g. Product Development Process), proper usage of tools such as PDM and PLM, best practices around mechanical analysis, simulations, design reviews, etc., best practices around CAD techniques (Solidworks)
    • Identify and evaluate emerging technologies and trends, developing them into best practices and integrating them into our internal products to improve performance and efficiency.
    • Cultivate a culture of innovation within the team: fostering creative problem-solving, a willingness to take risks, continuous improvement, and working with appropriate levels of process and rigor.
    • Oversee the function’s successful execution of multiple engineering projects in parallel, ensuring timely completion at high levels of quality and within budget constraints.
    • Ensure the engineering team is engaging collaboratively with project managers to define project scopes, milestones, and deliverables.
    • Monitor project progress, identifying and addressing potential risks while implementing effective mitigation strategies.
  • Foster a collaborative and inclusive work environment that encourages professional growth and creativity.
  • Provide guidance and support for career development, training, and performance management.
  • Ensure that all products and solutions comply with safety and environmental standards, reflecting our commitment to safety and sustainability.

Who You Are 

  • Bachelor's or Master's degree in Mechanical Engineering or a related field.
  • Proven track record of at least 15 years in Mechanical Engineering, with a minimum of 10 years in a leadership and management role demonstrating capability of managing an organization of similar size and complexity.
  • Extensive experience in designing and implementing mechanical systems of similar complexity and bringing them to a production environment. 
  • Mastery of at least 4 of the following areas:
    • Design of chemical electrochemical reactors (e.g. electrolyzers, batteries)
    • Design of high pressure sealed assemblies
    • Product design with fluid handling
    • Structural mechanical analyses and Finite Element Analyses
    • Fluid mechanics and Computational Fluid Dynamics
    • Product design from prototyping through production
    • Design for high-volume manufacturing
    • Leadership of multidisciplinary projects
    • Materials compatibility with chemical compounds
  • Deep understanding of mechanical design best practices as it relates to mechanical part and system design.
  • Strong project management and general organizational skills.
  • Ability to navigate through technical uncertainty and ambiguity, and to transform strategy  into clear and actionable plans.
  • Must be a highly effective and clear communicator within the team and cross-functionally with a demonstrated ability to lead multidisciplinary teams.  This is a key success factor at Twelve.  
  • Flexibility and ability to thrive in (sometimes extreme) ambiguity.  


Twelve Benefits

  • Medical, dental, and vision coverage
  • Paid sick days and vacation
  • Competitive salary and equity compensation commensurate with experience
  • Diverse and inclusive work environment

At Twelve, it's important each employee is compensated competitively and fairly. In alignment with state legal requirements, Twelve conducts exhaustive research to understand compensation markets. A range for the included position is listed below. Be advised, actual offer details are determined by job category, job location, and candidate skill level. 
United States Wage Range: $216,000 - $300,000
Please note that some pay bands may have wide ranges of compensation to accommodate candidate's diverse sets of skill levels.

We believe that the unique contributions of each individual is the driver of our success. To make sure that our products and culture continue to incorporate everyone's perspectives and experience we never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status.


Want to work with us but don't see a current opening that fits your background? Email us at [email protected]


Potential Twelve Candidates, please be aware of potential recruiting scams. Twelve will never ask you for payment or your payment information in order to pursue a career here. If anyone has requested such a payment or payment information in relation to a Twelve position or if you believe that someone outside Twelve has impersonated a Twelve recruiter or employee, please contact [email protected]. Thank you and be safe!

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