Senior/Staff Chemical Process Engineer is open at Marianaminerals in San Francisco HQ. The posting gives a salary of $140K - $175K. Posted on Oct 26, 2026, and still on Marianaminerals’s careers page when we last checked, on Nov 14, 2026.
About the role
Mariana Minerals is looking for a highly motivated Sr./Staff Process Engineer to work on building the critical minerals supply chain to support the world’s energy transition and to supply metals necessary for technology and AI, energy, mobility, and defense. As a Sr./Staff Process Engineer at Mariana Minerals, you will lead the development and deployment of state-of-the-art chemical refining processes, while also…
The opening lines of the posting. The rest is on Marianaminerals’s careers page.
Hiring at Marianaminerals
Marianaminerals has 102 open roles right now. Most are in Engineering, Manufacturing & Trades and Operations. The median advertised salary across its roles with a published range is $160K. See all its roles
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