Mariana Minerals
Software-first critical minerals mining and refining
Mariana Minerals develops and operates projects to produce critical minerals like lithium and copper for energy, AI, and defense. It uses AI and software platforms for efficient, vertically integrated mining, extraction, and refining. This addresses supply chain shortages with faster, lower-cost domestic production.
Engineering Technician
Hands-on Engineering Technician supporting pilot plant R&D, equipment design, and process optimization for critical minerals refining. Requires 3+ years of pilot plant or industrial operations experience and a bachelor's in engineering or materials science.
Global Workplace Director
Lead global workplace strategy, facilities operations, office expansions, and employee experience programs across multiple locations. Requires 15+ years in workplace/facilities management and 10+ years leading teams.
Project Controls Manager
Hands-on leader establishing project controls systems, schedules, budgets, and risk frameworks for large-scale mining capital projects. Requires 10+ years experience and Primavera P6 proficiency.
Staff Machine Learning Engineer
Staff ML Engineer setting technical direction for autonomous mineral refining using reinforcement learning and simulation. Owns modeling, validation, and deployment of control systems on live industrial equipment.
Project Scheduler
Develops and maintains integrated project schedules for engineering, procurement, construction, and commissioning using Primavera P6. Performs critical path analysis, risk assessment, and progress reporting to ensure on-time, on-budget delivery.
Drilling Engineer, Exploration & Resource Automation
The Drilling Engineer, Exploration & Resource Automation will help build and implement automated drilling, sampling, QA/QC, and resource workflows. This role involves translating field workflows into software tools and optimizing drilling programs for critical mineral sourcing.
People Systems & Programs Lead
Build and scale People Operations infrastructure including HRIS/ATS systems, recruiting workflows, onboarding, reporting, and employee lifecycle processes. Drive automation, compliance, and operational excellence in a high-growth startup environment.
Project Engineering Manager - Houston
Manages engineering activities, design workflows, and cross-discipline coordination for critical minerals projects in EPC environments. Requires 7+ years experience, engineering degree, and proficiency in project tools and EPC processes.
Staff Program Manager
Leads operational performance management, business process improvements, site digitization, and program management at a mining operation in Utah. Requires 5+ years in operations or program management, building reporting systems, and cross-functional leadership in industrial settings.
Staff Product Manager
Owns end-to-end product domains in MarianaOS, building software for mining operations, mineral processing, and business ops at the hardware-software-AI intersection. Requires 7+ years PM experience in physical/industrial systems, on-site presence, and significant travel.
Senior Estimator
Leads detailed cost estimation for mining and mineral processing projects using RSMeans and Excel. Requires 7+ years in mining/heavy industrial estimating, strong analytical skills, and ability to collaborate with engineering teams while supporting automation tools.
Staff Process Engineer
Leads design, operation, and optimization of pilot-scale minerals processing equipment and experiments. Bridges R&D to commercial scale with 10+ years experience in chemical/process engineering and unit operations like leaching and electrowinning.
Senior Plant Manager
Leads development, construction, and operations of a minerals processing pilot plant in Houston, managing multidisciplinary engineering teams, scaling R&D processes to production, and ensuring safety/compliance. Requires 10+ years in minerals/chemicals processing and strong unit operations knowledge.
Lead Resource Geologist
Leads geological modeling, resource development, and mine geology support for nickel and copper projects in open pit and underground operations. Provides technical inputs to mine planning and ensures compliance with reporting standards like NI 43-101 and JORC.
Process Modeling Engineer
Develops, validates, and optimizes steady-state and dynamic process models for critical mineral refining using tools like ASPEN, SysCAD, and METSIM. Collaborates with R&D and operations to integrate models into facility design, automation, and economic analysis.
Extractive Metallurgist
Develops, tests, and optimizes mineral processing flowsheets for zinc/copper extraction, leading trials and integrating ML analytics for efficiency. Collaborates with engineers and data scientists in a startup environment, supporting facility scale-up with travel.
Hydrometallurgical Process Engineer
Leads development and deployment of hydrometallurgical refining processes for critical minerals, from concept to commissioning. Manages vendors, builds process models, optimizes operations, and collaborates with software/ML teams on automation and digital twins. Requires chemical/process engineering expertise in mineral processing.
Senior Full Stack Software Engineer
Leads architecture and delivery of full-stack software systems for minerals supply chain, integrating engineering tools like Autodesk, collaborating with ML engineers on AI features, and mentoring teams in a fast-paced startup environment. Requires 5+ years full-stack experience with modern frameworks and cloud platforms.