R&D Metallurgist is open at Marianaminerals in San Francisco HQ. The posting gives a salary of $110K - $140K. Posted on Sep 10, 2026, and still on Marianaminerals’s careers page when we last checked, on Nov 14, 2026.
About the role
The R&D Metallurgist designs, executes, and analyzes experiments to advance Mariana Minerals' hydrometallurgical testing programs. This hands-on laboratory and pilot-scale role focuses on running DOE protocols, operating tank reactors and mining systems, and analyzing data to optimize extraction for critical minerals. What You'll Do - Develop Design of Experiments (DOE) protocols for chemical processing, extraction…
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
