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Product designer CRO H/F

Nexton đŸ‡«đŸ‡· Paris, France

Onsite Contract Senior

Analyze conversion funnels and user behavior to identify friction, develop design hypotheses, and create interface variants for experimentation. Design and optimize user journeys, run and evaluate A/B and multivariate tests, measure business impact, document findings, and promote CRO practices across product, marketing, data, and development teams.

Responsibilities

  • Analyze conversion funnels and user behavior using analytics tools to pinpoint friction points
  • Formulate design hypotheses and create variant screens for empirical testing
  • Set up, run, and interpret continuous A/B and multivariate experiments
  • Design fluid, high‑performance interfaces in Figma aligned with the existing design system
  • Apply cognitive‑psychology levers (visual hierarchy, reassurance, badges, clarity) to boost actions
  • Write and optimize microcopy for buttons, titles, and forms
  • Measure business impact of each iteration and evangelize CRO culture across teams

Requirements

  • At least 3 years of experience as a Product Designer, UX/UI Designer, or Growth Designer
  • Experience in e‑commerce, FinTech or SaaS environments
  • Proficiency with Figma and design systems
  • Strong knowledge of analytics tools (GA4, Mixpanel, ContentSquare, Hotjar)
  • Hands‑on experience with A/B testing platforms (AB Tasty, Kameleoon, Optimizely, VWO)
  • Understanding of cognitive psychology, information architecture, and conversion‑focused UX writing
  • Ability to communicate findings and influence cross‑functional teams

Benefits

  • Dynamic community groups for professional development
  • Meet‑ups and training sessions
  • Sports and festive events
  • Sustainable mobility allowance
  • Latest‑generation mobile phone

Key Skills

Figma Design systems GA4 Mixpanel ContentSquare Hotjar AB Tasty Kameleoon Optimizely VWO A/B testing Multivariate testing Conversion rate optimization Data‑driven design Cognitive psychology UX writing Information architecture Wireframing High‑fidelity prototyping Cross‑functional collaboration Stakeholder communication Agile methodology Problem solving Analytical thinking Iteration planning Documentation

About Nexton

NEXTON is a digital consultancy and product development firm founded in 2011, combining consulting expertise with a creative factory to serve large enterprises and digital‑first companies.

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