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"A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away."

— Antoine de Saint-ExupĂ©ry

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Product designer CRO H/F

Nexton đŸ‡«đŸ‡· Paris, France

Onsite Full-time Mid-level

You will analyze user behavior and conversion funnels to identify friction points and optimize key user journeys. You will design and implement A/B tests and data-driven interface improvements to maximize business performance and conversion rates.

Responsibilities

  • Analyze conversion funnels and user behavior using GA4, Mixpanel, Contentsquare and Hotjar to identify friction points
  • Formulate design hypotheses and create screen variants for empirical testing
  • Set up, run and evaluate continuous experiments (A/B, multivariate) with AB Tasty, Kameleoon, Optimizely or VWO
  • Design fluid, high‑performance interfaces in Figma that align with the existing design system
  • Apply cognitive‑psychology and nudge techniques (visual hierarchy, reassurance badges, clear offers) to increase conversions
  • Write and optimise micro‑copy for buttons, titles and forms (UX writing & copywriting)
  • Measure business impact of each iteration, document learnings and promote CRO culture across teams

Requirements

  • Minimum 3 years experience as a Product Designer, UX/UI Designer or Growth Designer, preferably in e‑commerce, FinTech or SaaS
  • Strong proficiency with Figma, including components and design systems
  • Hands‑on experience with analytics tools (GA4, Mixpanel, Contentsquare, Hotjar)
  • Proven track record in A/B testing and using experimentation platforms (AB Tasty, Kameleoon, Optimizely, VWO)
  • Deep understanding of cognitive psychology, information architecture and conversion‑focused UX writing
  • Ability to communicate results and collaborate with product managers, developers and marketing teams

Benefits

  • Dynamic community groups and regular Meet‑Ups for skill development
  • Training programs for continuous learning
  • Sport and festive events throughout the year
  • Sustainable mobility allowance
  • Latest‑generation mobile phone provided

Key Skills

Figma Design Systems GA4 Mixpanel Contentsquare Hotjar A/B Testing AB Tasty Kameleoon Optimizely VWO Cognitive Psychology Nudge Design UX Writing Copywriting Data‑Driven Design Conversion Rate Optimization User Research Prototyping Wireframing Cross‑functional Collaboration Stakeholder Communication Agile Methodologies Problem Solving Result‑Oriented Mindset Business Impact Measurement

About Nexton

A digital transformation company, focused on developing Websites and Mobile Apps. We exist to help companies thrive. Our creatives, strategists, and developers are on a mission to exceed clients expectations and ensure business success. We’re a business that grows businesses.

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