--- title: 'Full Stack Software Engineer at Mariana Minerals' canonical: 'https://feeny.ai/job/full-stack-software-engineer-mariana-minerals-san-francisco-tdera62xv3p5' type: 'job' last_seen: '2026-09-04' --- # Full Stack Software Engineer at Mariana Minerals - **Company:** Mariana Minerals - **Location:** San Francisco, CA - **Compensation:** $80k–$160k - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-08-31 - **Last confirmed live:** 2026-09-04 - **Apply:** https://jobs.ashbyhq.com/marianaminerals/eebc7048-02a3-42ba-80b7-04b8a997e50a ## Job description ## 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. ## Role Overview Mariana Minerals is looking for a highly motivated Full Stack Software Engineer to work on building the critical minerals supply chain to support the world’s energy transition. As a Full Stack Software Engineer at Mariana Minerals, you will lead the development and deployment of software to accelerate the engineering and construction of physical infrastructure that is critical to building the minerals supply chain. Responsibilities will include building integrations with the existing software tools for engineering and construction, extending these tools to fill in gaps and address pain points identified by Mariana’s internal engineering and construction teams, working with Mariana’s ML engineers to integrate LLMs to tackle specific challenges around unstructured data ingestion and understanding, and working with Mariana’s internal teams to develop a new “operating system” for the engineering, construction, and operation of Mariana’s mineral processing facilities. ## What You’ll Do - Work closely with Mariana’s internal engineering, construction, and operations teams to identify and build internal software tools to accelerate the deployment of Mariana’s mineral processing facilities. - Build data integrations with the existing suite of engineering/construction tools such as Autodesk. - Build net new web experiences and applications that will be used by Mariana's internal teams and partners to help build capital project faster and more efficiently. - Evaluate existing software in the ecosystem to assist Mariana’s internal teams - Work closely with Mariana’s ML engineers to implement novel LLM powered experiences that assist Mariana’s internal teams. - Assist with the data architecture for Mariana’s data pipelines to feed the training of novel ML models that control Mariana’s mineral processing facilities and provide visibility into the operation of the facilities to the internal Mariana team. ## What You’ll Bring - Strong understanding of software engineering in a professional capacity (1.5+ years preferred). - Ability to work with non-software stakeholders to identify pain points and needs, scope level of effort required for new features, and then drive implementation of these features. - Self-starter mindset, ability to bring clarity to high ambiguity situations, and excitement to work with non-software stakeholders directly. - Ability to work across the entire stack from deploying servers to writing front end code and everything in between (or demonstrated proficiency in one of these areas and the desire to expand your skillset). OUR 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! ## About Mariana Minerals ## Company Overview - **One-liner**: Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. - **Entity Type**: Private (Series A, $85M funding in July 2025) - **Headquarters**: San Francisco, California, United States - **Founded**: Not publicly available - **Founders**: Turner Caldwell (Co-Founder & CEO) ## Core Business - **Primary industry**: Metal Ore Mining / Critical Minerals - **Target customers**: B2B – energy, AI, and defense supply chains (including downstream manufacturers and government entities) - **Mission or purpose**: "Create a future of critical mineral abundance" by reimagining the global minerals supply chain with software, automation, and data-driven decision making. ## Products & Services - **Copper One (formerly Lisbon Valley Copper Mine)**: World’s first autonomous mine, located in Utah. Produces copper using integrated automation and software control. Restarted production in April 2026. - **Lithium One**: Lithium project (on the roadmap or early development). - **Other mineral projects**: Graphite, Uranium, Rare Earth Metals, Cobalt, Nickel, Aluminium – at various stages (stealth or roadmap). - **CapitalProjectOS**: Internal software platform for capital project management (mentioned in leadership bio). - **Technology Stack**: React, dbt, TypeScript, Python, TensorFlow, PyTorch, microservices, SCADA, Autodesk, and many others – indicating a strong software engineering backbone. ## Market Standing - **Valuation/Market Cap**: Not disclosed (private company) - **Key Metric**: Total funding – $85M Series A (July 2025, 1 investor) - **Notable Investors/Partners**: Lead investor not publicly disclosed (Andreessen Horowitz was pitched but not confirmed as an investor). Partners include Bot Auto, WeRide, Pronto, Atoms (based on LinkedIn mentions). Also works with UMA (Utah Mining Association). - **Growth Signals**: Headcount grew 3,575% YoY to 107 employees (as of mid-2026). 73 active job postings. Opened the world’s first autonomous mine (Copper One) in April/May 2026, generating significant industry news and social media engagement. ## Competitive Advantages - **Software-first approach**: The company builds automation and data systems from the ground up, rather than layering tech onto legacy mining operations. This enables fully autonomous mining. - **Vertical integration**: They develop, own, and operate mineral projects, controlling the entire value chain from extraction to processing. - **Deep tech stack**: Use of AI/ML (TensorFlow, PyTorch), simulation, and real-time control systems to optimize mining operations. - **First-mover in autonomous mining**: Copper One is claimed to be the world’s first autonomous mine, giving them a significant lead in operational efficiency and safety. ## Strategic Focus - Scale autonomous mining operations beyond copper (lithium, graphite, uranium, etc.) - Secure domestic supply of critical minerals for U.S. energy, AI, and defense needs. - Continue aggressive hiring across engineering, operations, and field roles. - Expand from Utah to additional sites (Houston engineering office, potential new projects). ## Why Work Here - **Culture principles**: "Extreme Ownership", "Engineer Out Requirements, Then Automate", "Share Your Legos" – emphasizing accountability, simplification, and collaboration. - **Work environment**: High-growth startup with a mission-driven focus on critical infrastructure. Offices in San Francisco (HQ), Houston (Engineering), and La Sal, Utah (mine site). Hybrid/remote policy not explicitly stated, but multiple office locations suggest flexibility for field vs. office roles. - **Notable perks**: Opportunity to work on cutting-edge autonomous systems and AI in a traditional industry. Strong engineering culture with modern tech stack (React, Python, ML). Rapid career growth due to company expansion. - **Talent sources**: Attracts talent from Tesla, Redwood Materials, Lilac, ExxonMobil, Amazon Web Services, and other tech/energy companies – indicating a high-caliber peer group. ## Sources 1. [marianaminerals.com](https://marianaminerals.com/) 2. [marianaminerals.com/careers](https://marianaminerals.com/careers) 3. [marianaminerals.com/about](https://marianaminerals.com/about) 4. [jobs.ashbyhq.com/marianaminerals](https://jobs.ashbyhq.com/marianaminerals) 5. [linkedin.com/company/mariana-minerals](https://www.linkedin.com/company/mariana-minerals) ## Other roles at Mariana Minerals - [Sr./Staff Technical Program Manager - Copper](https://feeny.ai/job/sr-staff-technical-program-manager-copper-mariana-minerals-moab-hybc9rnj2271) — Moab, UT - [Mechanical Engineer](https://feeny.ai/job/mechanical-engineer-mariana-minerals-san-francisco-dv7an46y7ypw) — San Francisco, CA - [Pilot Plant Technician (Night Shift)](https://feeny.ai/job/pilot-plant-technician-night-shift-mariana-minerals-san-francisco-xt80rkhtfgne) — San Francisco, CA - [Administrative Assistant](https://feeny.ai/job/administrative-assistant-mariana-minerals-houston-bamf8ahyve5k) — Houston, TX - [Senior Systems Administrator](https://feeny.ai/job/senior-systems-administrator-mariana-minerals-san-francisco-t93c8xavrzp1) — San Francisco, CA - [Lead Operator](https://feeny.ai/job/lead-operator-mariana-minerals-east-6239emcdyrrk) — East, TX - [Lab Chemist](https://feeny.ai/job/lab-chemist-mariana-minerals-moab-3s3trq9bcdc4) — Moab, UT - [Controls Technician](https://feeny.ai/job/controls-technician-mariana-minerals-east-kt73j4cf89md) — East, TX - [Maintenance Technician](https://feeny.ai/job/maintenance-technician-mariana-minerals-east-am22rcspy7bp) — East, TX - [Process Engineer](https://feeny.ai/job/process-engineer-mariana-minerals-east-en510gjggana) — East, TX