About Mariana Minerals

Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

The Role

Mariana Minerals is looking for a Business Operations Manager to lead operational strategy and business performance management for its Lithium business, based out of Mariana's Houston or San Francisco office. This role sits at the intersection of Finance, Business Development and Operations — translating operational performance into financial insight and helping leadership make faster, better-informed decisions.

What You’ll Do

• Financial and Operational performance management: Own the business performance framework for the Lithium business — integrating operational KPIs with financial metrics to give leadership a clear view of cost, production, and margin performance against plan.

• FP&A partnership: Work closely with the Finance team to support budgeting, forec