UI/UX Designer - Senior - Freelance (M/F)

Collective.workParisEURESpublished 09/17/2026
Must-have:MobileAgileAIE-CommerceJunior
Machine translation — original language: French.Show original

CONTEXT

Digital innovation hub of a large group (+600 talents) Team: E-commerce App Team, dedicated to the mobile booking application Work environment: Agile methods, working within a multidisciplinary squad (1 PM, 2 POs, 2 tech leads, 8 developers, 2 QA) and a design community of about forty people

MISSIONS

  • Formalize the APP Design elements of the product strategy
  • Translate the design vision and understand the product brief / roadmap to challenge the issues
  • Ensure consistency of features, journeys, and interfaces with counterparts (app, website)

Discovery: Designing the best experiences

  • Organize discovery with POs and formalize user knowledge into suitable deliverables
  • Conduct user research (data, field research, questionnaires) in collaboration with UX Research
  • Design with all stakeholders (users, PM, PO, Dev) within the sprint timelines

Delivery: Supporting qualitative delivery

  • Produce UX deliverables (user journeys, prototypes) and UI (high-fidelity mockups, flows, error cases)
  • Guarantee UI quality, accessibility, and OS specificities (native components, devices, tablet)
  • Integrate the Design System for homogeneity
  • Support developers during implementation and validation during QA

Monitoring and continuous improvement

  • Communicate with peers and stakeholders; iterate based on feedback
  • Identify key missing needs (e.g., UX writing)
  • Maintain and evolve the Design System
  • Benchmark best practices in the field

DELIVERABLE

  • HD Mockup / Prototype
  1. Graduate of a Grande École (Engineering/Business) or specialized Master's in Design
  2. Minimum 4 years of experience in a similar role combining expertise in Product Design, ideally in a B2C Consumer and e-commerce context
  3. Mastery of Product Design methods, user research, and mobile OS guidelines (iOS & Android)
  4. Good level of craft
  5. Rigor, organization, empathy, active listening, pedagogy, and excellent communication skills
  6. Professional English is imperative (presentations to be conducted in English)
  7. Knowledge of OS - Confirmed - Imperative
  8. AI - Junior - Important