Analytical Chemist - Instrumentation & Systems

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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview This is an internal, cross-site role focused on supporting and advancing analytical capabilities across multiple company locations. The position centers on method development, troubleshooting analytical methodologies, and implementing new instrumentation and procedures. The ideal candidate will combine strong analytical expertise with hands-on mechanical aptitude and the ability to work across diverse lab environments. What You'll Do Support and optimize analytical methodologies across multiple Mariana Minerals laboratory sites Troubleshoot and resolve issues related to analytical techniques, data quality, and method performance Lead and support implementation of new instrumentation (e.g., ICP-OES, ICP-MS, Atomic Absorption, or similar systems) Develop, validate, and standardize analytical methods and workflows Train laboratory personnel on instrumentation, analytical techniques, and best practices Collaborate with cross-functional teams to improve analytical efficiency and data reliability Assist in evaluating new technologies and recommending improvements to existing systems Maintain documentation for methods, SOPs, and internal technical guidance Provide internal technical support for complex analytical challenges What You'll Bring Bachelor's degree in Analytical Chemistry, Chemistry, or a related scientific discipline (recent graduates encouraged to apply) Hands-on experience (academic, internship, or research) with ICP-OES, ICP-MS, Atomic Absorption, or similar analytical instrumentation preferred Strong understanding of analytical techniques, sample preparation, and data interpretation Mechanical aptitude and comfort working with tools, instrumentation components, and basic diagnostics equipment (e.g., multimeters/voltmeters) Strong problem-solving and troubleshooting skills Excellent communication skills with the ability to train and support internal teams Ability to work both independently and collaboratively across multiple sites Travel Requirements Up to 75% travel , primarily within the continental United States Occasional international travel may be required Why Join Us? At Mariana Minerals, you'll be part of a mission-driven team reshaping the way critical minerals are sourced and supplied globally. You'll have the autonomy to make big decisions, the tools to innovate, and a culture that values ownership, smart automation, and collaboration. Our culture is built on three principles: 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. Mariana is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status.