Sr. Geotechnical Engineer

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About this role

Sr. Geotechnical Engineer Houston, TX, Houston, Texas, US, San Francisco HQ, Moab, UT 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 Mariana Minerals is seeking a Sr. Geotechnical Engineer to support mine development, infrastructure design, and operations across open pit and underground mining projects. This role provides geotechnical expertise throughout the full project life cycle-from early-stage studies and site characterization through construction, operations, and closure. In this role, you will develop and maintain geotechnical models, perform stability analyses, and support safe, efficient mine designs. You will work closely with geology, mine planning, mining engineering, and infrastructure teams to ensure geotechnical considerations are fully integrated into mine layouts, schedules, and operating strategies. This is a hands-on technical role suited for an engineer with strong technical fundamentals who is comfortable working across office, site, and field environments. What You'll Do Site Investigation & Ground Characterization - Plan and execute geotechnical investigations including drilling, test pits, core logging, sampling, and in-situ testing - Interpret geotechnical, structural, and hydrogeological data to develop site-specific ground and rock mass models - Coordinate and review laboratory testing programs for soil and rock mechanics Open Pit Geotechnical Design - Perform slope stability analyses for open pits, waste dumps, leach pads and stockpiles - Provide geotechnical inputs to mine layouts,

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