Lab Technician

About Mariana MineralsMariana 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 RoleWe are hiring a Process & Lab Technician to support the safe, efficient, and high-quality process development studies and analytical tests. In this role, you will work closely with R&D and engineering to build, operate, and maintain ore leaching columns. You will also be responsible for timely, accurate, and actionable chemical analysis of ore, process streams, and final products. You will play a critical role in bridging leaching research and laboratory analytics with plant operations, helping ensure processes are robust, efficient, and suitable for future development & scale-up. What You’ll DoDrive ore handling including crushing, sorting by particle size, and taking representative samplesPrepare samples for analysis using techniques such as digestion, dilution, and/or filtrationPerform elemental and compositional analysis of solid and liquid samples using ICP, NMR, XRF, Titrator, or similar analytical techniquesDocument analytical results in laboratory information systems and maintain clear experimental records and material metrics using digital tools and softwareFollow strict environmental, health, and safety protocols Desired QualificationsExperience working in minerals processing, metallurgy, chemicals, specialty materials, or similar industrial environmentsFamiliarity with chemical processing (pumps, columns, instrumentation, etc) or crushing equipment (crushers, grinders, conveyors, sorters, etc)Ability to read and follow SOPs, equipment manuals, and safety guidelinesMechanical aptitude and ability to perform basic mechanical fabrication and troubleshootingHands-on experience operating analytical or similar equipmentStrong communication skills and willingness to collaborate across teamsCommitment to safety, accuracy, and operational excellenceAbility to lift up to 50 lbs and work on your feet for extended periodsOur culture is built on four principles:Everyone Gets Home Safe. We never put speed or cost ahead of people.Extreme Ownership. We take full responsibility for outcomes, relentlessly driving toward <solutions.Engineer> Out Requirements, then Automate. We simplify, optimize, and then automate for scale.Share Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.Join us as we build the future of responsible mineral sourcing and supply!