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

We are hiring a Planner/Scheduler to own schedule management for one of Mariana's capital projects, from the Level 1 summary leadership uses to the Level 4 detail the field works from.

You will work with internal teams to build schedules that reflect how they actually plan to execute the work, build and defend the critical path, hold EPC contractors to a clear scheduling standard, and turn progress data into forecasts people can act on. You will also help build the tools behind that work, so leadership and project teams can run what-if scenarios, see where the schedule risk sits, and make decisions with real data in front of them. The goal is a schedule nobody has to second-guess.

What you'll do

• Own the integrated schedule. Build and maintain Level 1 through Level 4 critical path schedules in Primavera P6 covering engineeri