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Process Engineer



Boulder, CO, USA
Posted on Friday, May 12, 2023

About Travertine

Travertine is a Climate Tech start-up based in Boulder, CO that is rapidly scaling an electrochemical technology for carbon dioxide removal (CDR) and sustainable critical element extraction. Our process takes carbon dioxide from the air and sources of waste sulfate to produce carbonate minerals, sulfuric acid, and hydrogen. The sulfuric acid is used in extraction of critical elements like lithium and nickel for EV batteries and phosphorus for fertilizer. The Travertine Process was developed by Prof. Laura Lammers at her UC Berkeley lab. Travertine was founded in 2022 to scale this process to gigatons per year of CDR. 

In 2022, we raised a seed round from the Grantham Foundation and Clean Energy Ventures, we were one of the first companies to receive pre-purchases of CDR from the new Stripe-led $1B Frontier fund, and we received a $2M grant from the DOE’s ARPA-E program. We were also named C&EN 10 startups to watch in 2022 and a Bloomberg NEF Pioneer in 2023.  We believe in developing practical approaches to solving the climate crisis. And we are rapidly scaling up our system. 

The Role

We are looking for an ambitious Process Engineer who will work with our process engineering team on process R&D, pilot plant construction, and process scale-up efforts. We are kicking off the engineering and build of a larger-scale pilot system to be deployed at customer sites and you will be an integral part of building this and future systems.  You will be responsible for experimental design, pilot plant operation, and data analysis to develop and scale-up Travertine’s carbon dioxide removal (CDR) technology.  If you are a Process Engineer and want to work on the cutting edge of Climate Tech to help remove carbon from the atmosphere AND sustainably extract the elements critical for decarbonization this is your opportunity. 


  • Assist in the selection, design, cost estimation, and scale-up of process equipment
  • Assist with development of process flow diagrams, mass balances, and process design criteria
  • Design and carry out experiments to validate process feasibility, select process equipment, and optimize process variables
  • Compile, analyze, and report data
  • Troubleshoot pilot plant performance


  • Bachelor's degree in engineering (chemical, materials, metallurgical) or equivalent experience
  • 2+ years experience in pilot/metallurgical/chemical plant operations
  • Experience in chemical and physical analytical techniques (particle size analysis, wet chemistry, XRD, XRF, ICP-OES/MS)
  • Experience reading and writing process flow diagrams (PFDs) and piping and instrumentation diagrams (P&IDs)
  • Experience in METSIM is a big plus

This role is based in our headquarters in Boulder, CO.

Salary range is $75,000 - $100,000 depending on experience and qualifications.


  • Competitive pay and stock options
  • Health, Dental, Vision, Life Insurance
  • Optional 401k
  • Flexible time off policy