Mariana Minerals jobs

Mariana Minerals seeks a Chief of Staff to the COO to drive operational excellence and transformation across mining/minerals production sites. The role involves 80% travel to operating locations, leading cross-functional projects, deploying automation and technology, and serving as an operations advisor to the COO. Compensation is $180K–$210K annually; the position requires a Bachelor's degree in Engineering, Operations, or related field and significant industrial/manufacturing operations leadership experience.

Mariana Minerals, a software-first minerals company focused on critical supply chains for energy and AI, is hiring a People Systems & Programs Lead to build and scale the operational foundation of their People function. You'll own recruiting operations, HRIS/ATS optimization, onboarding processes, and people metrics while partnering cross-functionally with leadership, finance, and operations to streamline workflows and implement automation. The role requires 7–10+ years in People Operations, Recruiting Operations, or HR Systems with proven expertise in platforms like Rippling, Workday, or Greenhouse, plus strong process design and analytics capabilities. This is a hands-on, strategic role in a high-growth startup environment where you'll eventually build and lead a People Operations team; the company emphasizes ownership, automation-first thinking, and collaboration. A notable aspect of this role is the explicit expectation to design, implement, and manage scalable people programs while driving operational efficiency in a fast-moving, mission-driven organization focused on reshaping the global minerals supply chain.

The Electrical & Instrumentation Designer role at Mariana Minerals involves configuring and drafting electrical infrastructure designs using AutoCAD Electrical, including single-line diagrams, schematic wiring, cable tray layouts, and instrument specifications for a minerals processing supply chain. The position requires 5+ years of CAD administration and 2D/3D drafting experience, with focus on hardware-level electrical system design rather than software engineering.