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Mercor

Senior Product Designer, UI/UX

Mercor

. Partner with AI researchers to identify best-in-class UI and UX patterns .

Posted 9/25/2026full-timeUnited StatesSenior💰 $80 - $110 per hourWebsite

Tech Stack

Tools & technologies
JavaScriptReact

About the role

Key responsibilities & impact
  • Partner with AI researchers to identify best-in-class UI and UX patterns
  • Define clear principles and rubrics for excellent design
  • Build polished, interactive web prototypes using code or AI-native tools
  • Review AI-generated interfaces and prototypes
  • Provide specific, actionable written feedback on layout, hierarchy, interaction, motion, and visual polish
  • Explore visual styles, frameworks, and animation approaches across productivity tools, consumer apps, and games
  • Collaborate with designers and researchers to maintain standards and improve quality

Requirements

What you’ll need
  • 7+ years of experience as a product designer, design lead, design engineer, or creative front-end engineer at a product- or design-led company or top design agency
  • Hands-on skills building working web prototypes in HTML, CSS, JavaScript, React, Tailwind, or AI-native tools such as Cursor, v0, Lovable, Bolt, or Framer
  • Strong grounding in user-centered design, interaction design, and rapid prototyping
  • Senior-level design judgment and ability to explain design decisions clearly
  • Ability to engage reliably for 40 hours per week during weekdays
  • Clear written communication and ability to give precise, constructive design feedback
  • Nice to have: Fluency with Framer Motion, GSAP, Rive, Lottie, After Effects, 3D, WebGL, or game design experience in 2D or 3D

Benefits

Comp & perks
  • W-2 employment
  • Payroll, benefits, and compliance provided by Cincinnatus LLC
  • Opportunity to be placed at a leading AI lab as part of its extended workforce
  • Referral bonus of up to $1,760 per successful referral (for referrers)