To prevent the most catastrophic impacts of climate change, the world must remove carbon dioxide directly from the atmosphere. This is in addition to dramatically reducing current carbon emissions. According to the IPCC, we will need to remove 10 billion tons of carbon dioxide annually by 2050 to limit the rise of global temperatures past 1.5°C. Solving this problem enables the opportunity for a trillion-dollar carbon dioxide removal (CDR) industry.

Holocene removes carbon from the atmosphere using novel chemistry for direct air capture (DAC). We’re a group of engineers with years of experience leading R&D organizations, commercializing DAC technology, and building climate companies. The company has won several awards and is well-funded by some of the best investors supporting climate technologies.

We are looking for early teammates to play a vital role in developing our technology and shaping company culture. We value the ability to take ownership, lead with curiosity, and have a passion for making an impact on the world.

We are seeking a Mechanical Design Engineer to assemble and test components and to build our first demonstrator.


  • Facilitate rapid testing of new chemical compounds, process concepts, and hardware components at bench scale
  • Design and build prototypes and test benches from ideation to assembly to testing in close collaboration with internal and external partners
  • Develop test specifications and ensure reliable and reproducible results
  • Perform and conduct laboratory experiments for new technology ideas and concepts
  • Plan, organize, and coordinate test activities for chemical and product development
  • Build the company’s first demonstrator, both individual components and the full system, along with the team

Qualifications & Skills:

  • Bachelor's degree in mechanical engineering or equivalent
  • At least 2 years of work experience in a similar role
  • Passion for mechanical design and for “making things work”
  • Experience working in a laboratory environment and running experiments
  • Experience building prototypes, including sourcing equipment and assembly
  • Knowledge of computer-aided engineering tools

Bonus Qualifications:

  • Master’s degree in mechanical engineering or equivalent
  • Experience working with chemicals
  • Experience working in a start-up environment

We are looking for teammates who:

  • Take ownership of their work
  • Lead with curiosity and are excited to work on fast-paced technology development
  • Love to work in an interdisciplinary team
  • Are comfortable making decisions with incomplete information
  • Want to contribute to a meaningful climate change solution


  • Competitive Salary
  • Equity participation
  • Medical, dental, and vision benefits
  • Flexible vacation policy

We are an equal-opportunity employer. We celebrate individuals from all backgrounds and firmly believe that our business and team will be stronger with diverse backgrounds, thoughts, ideas, and experiences. If you’re interested in what we’re doing, we’d love to hear from you.