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Mariana Minerals · Hiring

Staff Product Manager, Engineering & Construction

San Francisco HQOn SiteFull Time$180K – $210K • Offers Equity

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

We're hiring a Staff Product Manager to own the Engineering and Super domains of CapitalProjectOS (CPOS), the operating system for how Mariana designs, plans, and builds capital projects. CPOS is organized around four components ( MarianaEngineer (design), MarianaGSM (procurement), MarianaSuper (construction), and MarianaPM (planning and monitoring)) and this role owns two of them end-to-end: MarianaEngineer, the centralized system for design basis, process and engineering data, and 3D models; and MarianaSuper, the real-time command center for construction execution and plan-versus-actual tracking in the field.

You will be the single accountable owner for product strategy, roadmap, and execution across engineering and construction, working alongside PMs who own procurement (GSM) and planning/knowledge (PM) within the same CPOS team. The ideal candidate has hands-on experience in capital project engineering or construction/field execution and is energized by the challenge of embedding AI into workflows that engineers and superintendents depend on every day.

What You'll Do

Desired Qualifications

Must Have

Nice to Have

Why This Role

At Mariana, you don't need to validate product-market fit because we are the market. If you identify a real problem and build a real solution, adoption is a conversation, not a sales cycle.

MarianaEngineer and MarianaSuper are the platforms that determine whether Mariana's designs move from design basis to 3D model without drifting out of sync, and whether the field catches a schedule or quality problem in real time instead of in a monthly report. The engineering tools you build set the authoritative source of truth for every project. The command center you build is what a superintendent looks at every morning to run the site.

If you want to own something end-to-end, build software with immediate operational impact, and help shape what a modern industrial company looks like from the inside out — we'd love to talk.

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!

Interested in This Role?

Apply at Mariana Minerals

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