Product Designer, MarianaOS

Mariana Minerals
San Francisco
Workplace: OnsiteFull timeUSD 180,000 - 210,000 annuallyFunction: Design (Product/UX/UI/Visual)Skills: ["Extreme ownership","Collaborative mindset","Direct design feedback","User-centered thinking","Judgment on complex problems"]

Design and simplify complex, data-dense workflows in MarianaOS so it’s intuitive and fast for hundreds of daily users. Own and evolve MarianaOS’s design system, including coded components, and partner closely with PMs and engineers from problem framing through shipped UI. Use lightweight user research and feedback loops to ground decisions in real needs, and prototype in code when it accelerates delivery.

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Mariana Minerals
Mariana Minerals
1 day ago

Product Designer, MarianaOS

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Source: Company careers pageValidated by: Fursa AI
Last checked: 8 hours agoStatus: Live

Job Summary

Design and simplify complex, data-dense workflows in MarianaOS so it’s intuitive and fast for hundreds of daily users. Own and evolve MarianaOS’s design system, including coded components, and partner closely with PMs and engineers from problem framing through shipped UI. Use lightweight user research and feedback loops to ground decisions in real needs, and prototype in code when it accelerates delivery.
Location: San Francisco
Workplace: Onsite
Employment Type: Full time
Job Function: Design (Product/UX/UI/Visual)
Seniority: Mid level

Key Responsibilities

  • •Design clear information architecture and flows for complex, data-dense workflows in MarianaOS.
  • •Grow and own the design system, including coded components engineers can build on.
  • •Partner with PMs and engineers from early problem framing through shipped UI.
  • •Provide and receive fast, direct design feedback to improve usability and product outcomes.
  • •Prototype directly in code and run lightweight user research/feedback loops to guide launches.

Pay and Benefits

Salary: USD 180,000 - 210,000 annually
Equity and Bonus:Equity
Perks:Equity

Key Requirements

  • •Strong ability to simplify complexity: turn complicated products or datasets into clear, usable experiences.
  • •Experience designing non-trivial, technical/operational/data-heavy products and articulating hard tradeoffs.
  • •Opinionated visual design direction focused on modern, future-looking usability (not just polish).
  • •Collaborative, cross-functional working style—partnering deeply with PMs and engineers rather than only receiving specs.
  • •AI fluency: uses AI tools and can prototype in code, adapting the design process to how software is built.
Skills:Extreme ownershipCollaborative mindsetDirect design feedbackUser-centered thinkingJudgment on complex problems
Tech Stack:FigmaDesign systemReplitClaude CodeCursorV0Agentic tools

Company Brief

Mariana Minerals
Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.
Industry: Mining & Metals
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Funding: Series A
Headquarters: San Francisco, United States
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