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Marine C.MC

Marine C.

Supermalter

Senior product designer, illustrator

€715/day
7 projects
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marine

Senior Product Designer with over 13 years of experience, I have contributed to designing B2B and B2C products, in agencies, startups, and scale-ups.

I design simple product experiences that combine user needs, business objectives, and brand storytelling.

My missions:
- Lead the design roadmap aligned with product strategy
- Design and maintain design system consistency
- Share discovery best practices within teams

My work method:
- Identify high-impact opportunities through discovery
- Prioritize them with Product Managers, Engineering Managers, and Data Analysts
- Design solutions that combine user value and business impact
- Measure, learn, and iterate continuously (agile methods)

I am particularly interested in a role at the intersection of user needs, business impact, and brand storytelling.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Nantes (up to 50km)

Experience

  • Leboncoin
    Senior Product Designer
    E-COMMERCE
    March 2024 - Today (2 years and 3 months)
    Nantes, France
    Leboncoin is a classified ads website and app for individuals and businesses.

    My main tasks within the Mobility tribe:
    - Manage the UX roadmap for the launch of a new product for automotive professionals
    - Use the FOCUSED methodology to conduct discoveries
    - Propose new improvement opportunities for the current software for dealerships
    - Participate in macro user studies in collaboration with the Research team
    - Share user-centered design culture within the feature teams
    Product Discovery User Experience Design User Research Roadmapping
  • Gens de Confiance
    Senior Product Designer
    REAL ESTATE
    May 2022 - February 2024 (1 year and 9 months)
    Nantes, France
    Gens de Confiance is a classified ads website and app based on a referral system.

    My main tasks within the feature team:
    - Participate in OKR definition
    - Use the FOCUSED discovery methodology to achieve objectives
    - Work closely with the PM, developers, and marketing to design the best user experience

    And within the design team:
    - Define a vision for our Design System and share it with front-end developers
    - Raise company awareness of the user-centered approach
  • Millionroads
    Senior Product Designer
    EDUCATION AND E-LEARNING
    March 2020 - April 2022 (2 years and 1 month)
    Nantes, France
    Millonroads is a webapp that helps users find their professional path.

    I was in charge of the entire design process:
    - understand and identify needs to define an MVP
    - design the main user flows
    - conduct remote user tests and interviews
    - create the brand identity and a design system
    - facilitate design sprint workshops to launch new features

Reviews

5.0

Out of 3 ratings

A

Abderrahmane

Directeur UX - SNEEP

Reviewed on 5/18/2026

Marine Crespel was a real asset to the Mobility scope. She brought an excellent combination of product vision, UX rigor, and execution capability, with a remarkable level of autonomy. One of the particularly appreciated aspects of her mission was her great flexibility. Marine was initially working on the Core Experience scope before joining Mobility, and she adapted very quickly to a new environment, new challenges, and different product issues. This transition was very smooth, with an impressive ability to quickly get up to speed and become operational in a very short time. Beyond the quality of her deliverables, Marine had a very positive impact on collaboration between the Product, Tech, and Design teams. She quickly understands business challenges, challenges subjects with relevance, and always proposes pragmatic, user-centered solutions. Her work on Mobility helped advance complex issues with great clarity, while maintaining a very high level of demand for user experience and overall product consistency. She is reliable, proactive, structured, and very pleasant to work with on a daily basis. I recommend Marine without hesitation for missions requiring strategic thinking, operational excellence, adaptability, and strong collaboration skills.
A

Abderrahmane

Directeur UX - Leboncoin - Nantes

Reviewed on 5/18/2026

Marine Crespel was a real asset to the Mobility scope. She brought an excellent combination of product vision, UX rigor, and execution capability, with a remarkable level of autonomy. One of the particularly appreciated aspects of her mission was her great flexibility. Marine was initially working on the Core Experience scope before joining Mobility, and she adapted very quickly to a new environment, new challenges, and different product issues. This transition was very smooth, with an impressive ability to quickly get up to speed and become operational in a very short time. Beyond the quality of her deliverables, Marine had a very positive impact on collaboration between the Product, Tech, and Design teams. She quickly understands business challenges, challenges subjects with relevance, and always proposes pragmatic, user-centered solutions. Her work on Mobility helped advance complex issues with great clarity, while maintaining a very high level of demand for user experience and overall product consistency. She is reliable, proactive, structured, and very pleasant to work with on a daily basis. I recommend Marine without hesitation for missions requiring strategic thinking, operational excellence, adaptability, and strong collaboration skills.

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Education

  • Professional Bachelor's Degree CDNL
    Gobelins, School of Image
    2013
  • Professional Bachelor's Degree IW
    IUT Bobigny
    2012

Skill set (24)

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