Staff Product Designer, MarianaOS at Marianaminerals

The role

Mariana Minerals is seeking its first dedicated design hire to simplify complex, data-heavy workflows within MarianaOS. You will work across teams to ensure the platform is intuitive and human-centered while managing significant underlying complexity.

What you'll do

• Design clear information architecture for data-dense workflows
• Own and expand the design system including coded components
• Partner with product managers and engineers from problem framing to shipping
• Provide direct design feedback to raise the visual bar
• Prototype directly in code to accelerate the delivery of designs
• Synthesize user research and feedback loops with internal stakeholders

What you'll bring

• Proven ability to simplify complex products or datasets
• Experience designing technical or data-heavy operational products
• Strong visual design perspective that modernizes traditional industries
• Fluency with AI tools like Claude Code, Cursor, or v0
• Seasoned specialist experience, ideally as a first startup designer

Your impact

You will transform MarianaOS into a highly usable tool for hundreds of employees, directly influencing the efficiency of the minerals supply chain. By establishing design practices and a robust system, you will enable the engineering team to ship coherent and high-quality interfaces at scale.