San Francisco, California, United States · On-site
$180k–$210k/yr
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…
Skills: Product Design, Information Architecture, Design Systems, Prototyping, User Research
San Francisco, California, United States · On-site
$100k–$140k/yr
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…
Skills: Technical Sourcing, LinkedIn Recruiter, Boolean Search, Talent Mapping, Competitive Intelligence
San Francisco, California, United States · On-site
$100k–$140k/yr
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…
Skills: Materials synthesis, Wet chemical synthesis, Process design, Scale-up, XRD
San Francisco, California, United States · On-site
$32/hr–$42/hr
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…
Skills: Logistics, Warehouse operations, Inventory management, Shipping and receiving, Forklift operation
San Francisco, California, United States · On-site
$40/hr–$50/hr
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…
Skills: Chemical processing, Pilot plant operations, Equipment installation, Troubleshooting, Mechanical repairs
San Francisco, California, United States · On-site
$85k–$95k/yr
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…
Skills: Metallurgy, Chemical Engineering, Mining Engineering, Process Development, Pilot-scale testing
Moab, Utah, United States · On-site
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…
Skills: Mining Engineering, Mine Planning, Resource Modeling, Reserve Estimation, Pit Optimization
Houston, Texas, United States · On-site
$140k–$175k/yr
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…
Skills: Mechanical Engineering, Pilot Plant Design, Equipment Specification, Piping Systems, Fluid Handling
San Francisco, California, United States · On-site
$100k–$150k/yr
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…
Skills: Human Resources, Employee Relations, Performance Management, Organizational Design, Workforce Planning
Moab, Utah, United States · On-site
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…
Skills: 3-Phase Power Systems, Electrical Troubleshooting, NEC Compliance, MSHA Compliance, Medium and High Voltage Equipment
Houston, Texas, United States · On-site
$100k–$160k/yr
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…
Skills: Process Modeling, Heat and Material Balance, Aspen Plus, Hysys, SysCAD
San Francisco, California, United States · On-site
$150k–$170k/yr
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…
Skills: Industrial Procurement, Vendor Management, Contract Negotiation, Strategic Sourcing, RFQ Management
Moab, Utah, United States · On-site
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…
Skills: Heavy Equipment Operation, MSHA Compliance, Equipment Inspection, Hazard Recognition, Mechanical Aptitude
San Francisco, California, United States · On-site
$140k–$175k/yr
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…
Skills: Strategic Mine Planning, Pit Optimization, Life-of-Mine Planning, Economic Trade-off Analysis, Phase Sequencing
Moab, Utah, United States · On-site
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…
Skills: SX/EW Plant Operation, Tank House Operation, Sample Collection, Data Entry, Safety Inspection
San Francisco, California, United States · On-site
$65k–$95k/yr
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…
Skills: Interview Scheduling, Candidate Communication, Ashby ATS, Recruiting Operations, Calendaring
Moab, Utah, United States · On-site
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…
Skills: Equipment Operation, Material Processing, Preventative Maintenance, Mechanical Troubleshooting, CNC Programming
Houston, Texas, United States · On-site
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…
Skills: Tekla, Advance Steel, SDS2, CAD Administration, 3D Modeling
San Francisco, California, United States · On-site
$40/hr–$50/hr
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…
Skills: Chemical Process Operation, Chemical Handling, Equipment Installation, Equipment Troubleshooting, CMMS
Houston, Texas, United States · On-site
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…
Skills: Process Safety Management, Risk Assessment, HAZOP, LOPA, PHA
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You will design intuitive, data-dense workflows for MarianaOS and own the company's design system to ensure seamless integration with engineering. You will also partner closely with product managers and engineers to prototype solutions and conduct user research to ground product development in real needs.
The ideal candidate is a seasoned specialist with a deep portfolio in designing complex, data-heavy products and a strong ability to simplify intricate workflows. You must be proficient in modern AI-assisted design tools and comfortable prototyping directly in code within a collaborative, cross-functional environment.
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.
We already have strong team of engineers, product managers and end users; what we don't have is someone whose full-time job is to sit with complexity and simplify it. We're hiring our first dedicated design hire to help bring MarianaOS to the next level. You'll work across teams to ensure that MarianaOS is intuitive, and human-centered on the surface while managing a tremendous amount of complexity underneath. This is not primarily a pixel-polish role; it's a role for someone who can take genuinely complicated, data-heavy workflows and make them feel obvious.
Take complex, data-dense workflows in MarianaOS and design clear, usable information architecture and flows ensuring MarianaOS is easy and fast to use for the 100s of employees here that rely on MarianaOS daily to do their complex jobs.
Grow and own our design system, including coded components and not just Figma files, which allows our engineers to quickly build great user interfaces with agentic tools.
Partner with PMs and engineers from early problem framing through shipped UI; you'll be in the room for the messy part, not just handed a spec.
Give and receive fast, direct design feedback across the team to help raise the visual bar and deliver valuable and usable products for end users.
Prototype directly in code when that's the fastest way to a real answer; pairing and working live with engineers rather than only handing off finished mocks so that great designs are delivered quickly.
Set short-horizon design direction (weeks to a couple months, not multi-year vision decks) so a fast-shipping engineering team stays pointed at something coherent.
Run and synthesize lightweight user research and feedback loops with customers and internal stakeholders, ensuring the products we are launching are grounded in user needs and feedback
Define best design practices/ways of working setting the tone of how design will function in the company as we grow.
We're optimizing for five things, roughly in this priority order:
Simplifying complexity. The single most important skill. Show us you can take a complicated product or dataset and turn it into something clear. That matters more than visual polish or raw technical depth.
Complex product experience. You've designed for a real, non-trivial product and can walk us through the hard tradeoffs you made. Experience designing for technical, operational, or data-heavy products (vs. consumer apps) is important. Showing the ability to distill complex problems into a clear story of what the user is doing and why and how they get to the end goal.
Opinionated visual design direction. Brings a real perspective on what great visual design looks like; we don’t want middle of the road SaaS visual design. We want future looking visual design which reflects our vision to modernize mining. We need to do this in a way which doesn’t compromise usability in a way which impacts outcomes.
Collaborative, cross-functional instinct. You're energized by sitting with PMs and engineers to work through a problem together, not just receiving a brief. We need someone whose design judgment the team learns to trust quickly.
AI fluency and adaptability. The classic mock-first design process (discovery, mocks, iterate) doesn't fit how software gets built anymore, especially at a company where engineers, and increasingly customers and internal users via tools like Replit and other AI builders, can go from idea to working software in hours. We want someone who already uses AI tools (Claude Code, Cursor, v0, or similar) as part of how they work, prototypes in code rather than only in Figma, and adapts their process readily rather than defending a fixed one. This person should be comfortable designing in the open: shaping something as it's being built and used, rather than fully specifying it up front.
Good pixel craft matters and we want someone who produces clean, professional visual work, but it's not the top bar for this role. Similarly, deep technical ability (e.g., owning a design system solo, writing production code) is a plus, not a requirement, since we have engineers who can share that load.
Given how much AI has scrambled the shape of design/product/engineering roles in the last couple of years, we're open to unconventional backgrounds: a UX designer, a design-minded product builder, or an engineer who loves design and wants to focus on prototyping and systems. What matters is demonstrated judgment on complex problems, not the job title on a past resume.
The focus is a seasoned specialist with a deep complex-product portfolio. We need someone with lots of experience working with teams to simplify data. As the first designer with a very high engineer-to-designer ratio on a fast-growing team, an enthusiastic junior may get buried here and not perform that well. Ideally we find someone who has been a first designer at a startup before.
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.
Building a better minerals company
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
Offices: San Francisco, CA 94107, US · La Sal, UT 84530, US · 1400 Minnesota St, San Francisco, California 94107, US
Building a better minerals company
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
Offices: San Francisco, CA 94107, US · La Sal, UT 84530, US · 1400 Minnesota St, San Francisco, California 94107, US
