Staff Process Engineer
Mariana Minerals
About this role
Mariana Minerals is seeking a Process Engineer to support the development and operation of a next-generation minerals processing pilot plant, focusing on scaling technologies from laboratory to commercial production. The role involves process design, experimentation, and collaboration with cross-functional teams to optimize and deploy new refining processes for critical minerals.
Skills
About Mariana Minerals
marianaminerals.comMariana Minerals is a software-first, vertically integrated minerals company dedicated to supplying essential minerals critical for modern energy, artificial intelligence, and defense technologies. With a focus on sustainable practices, it leverages technology to streamline the exploration and extraction processes of vital mineral resources. The company aims to support the growing demand for these materials in various high-tech industries while fostering innovation and environmental stewardship.
Recent company news
Andreessen HorowitzInvesting in Mariana Minerals
Jul 21, 2025
FastmarketsMariana targets 20% cost cut at US lithium project, CEO says
1 week ago
KTALnews.comNew lithium plant in Joaquin, TX, to boost jobs by 2027
Oct 21, 2025
Dallas NewsJapan, US seal $36B deal for gas, minerals that includes Texas
2 weeks ago
Oklahoma Energy TodayFirst Texas water lithium extraction plant to begin
Oct 23, 2025
About Mariana Minerals
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for Mariana Minerals.
Salary
$140k – $175k
per year
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