Travertine

Head of Engineering

Boulder, CO

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Role family: Engineering management
Seniority: Lead / management
Country: US
Work mode: On-site / unstated
First seen by hirly: 21 Sept 2026

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the posting

About Travertine

Travertine is an Industrial Transformation company based in Boulder, CO, that is rapidly scaling a technology for sulfur-decoupled production of critical minerals, starting with phosphate. Our technology enables large-scale circularity in extractive industries while simultaneously decarbonizing building materials.

We do this by electrochemically recycling chemical byproducts, sulfate wastes, into sulfuric acid and valuable mineral co-products. Sulfuric acid is the world's most used inorganic chemical and is vital for producing a wide range of critical elements including phosphate (for fertilizer and LFP batteries), lithium, copper, nickel, and rare earth elements. Travertine's technology solves the dual problems of sulfur supply vulnerability and large-scale chemical waste disposal. Our transformative process changes the fundamental material balance of critical mineral production, laying the groundwork for an industry liberated from fossil inputs and their legacy waste and carbon impacts.

Since founding, Travertine has raised over $29M in capital, including over $5M in US Federal and State government grants. We are an accomplished and driven team recognized by C&EN 10 startups to watch in 2022, Bloomberg NEF Pioneers in 2023, RMI Third Derivative 1st Gigaton Captured program in 2024, Mining Cleantech Challenge in 2026, and are a founding member of the Carbon Removal Alliance. Travertine designed, built, and successfully operated our core technology Demonstration Plant in Rochester, NY for over 3,000 hours, and delivered the project on-time and on-budget.

We are now recruiting a VP of Engineering to lead the development of our first commercial project, which will be the only new phosphate plant built on US soil in over 50 years.

Original posting on Travertine's site ↗

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