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Hélène K.HK

Hélène K.

UX/UI Designer - Design System Manager

€500/day
Strasbourg, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Hélène

UX / Product Designer with a strong front-end sensibility, I design simple, intuitive, and consistent digital experiences.
Thanks to my dual profile (Computer Science Master's + UX), I bridge the gap between user needs, product vision, and technical constraints.

I intervene as needed on:

✅ UX audits, user journeys, wireframes, prototypes
✅ Product design (feature definition, information architecture, MVP)
✅ Creation or evolution of complete design systems (tokens, guidelines, documentation, developer collaboration)
✅ Close collaboration with developers (Angular/React) to ensure seamless integration
✅ Co-design workshops and team support

I master the Figma, Tokens Studio, Storybook, Tailwind, complex UI kits ecosystem, and proactively use AI to accelerate research, design, and documentation.

In parallel, I can also support the creation of showcase websites (WordPress or HTML/CSS) and produce visuals (illustrations, logos, 2D animations).

🚩My goal: to create useful, human-centered, and technically realistic digital solutions.
🌐Portfolio:
  • French

    Native or bilingual

  • English

    Conversational

Can work on-site
Strasbourg (up to 50km), Paris (up to 50km)

Experience

  • Labster SARL
    UX Designer
    DIGITAL AND IT
    September 2025 - Today (11 months)
    Genève, Switzerland

    CONTEXT:

    Intervention as an UX/UI Designer on several internal health projects, aimed at medical professionals within the HUG ecosystem (Hospitals of Geneva).
    My mission: to enhance interface consistency through the redesign of the design system, improve the usability of critical business tools (especially the SMUR module), and support teams in adopting coherent, robust, and accessible design standards suitable for demanding usage contexts.

    TASKS AND RESPONSIBILITIES:

    • Active participation in the redesign and harmonization of the HUG design system, integrating digital accessibility best practices from the design phase.
    • Addition, evolution, and documentation of UI components, with particular attention to readability, keyboard navigation, and interaction consistency.
    • Design and optimization of critical business interfaces for healthcare professionals (e.g., SMUR project), considering field constraints, cognitive load, and accessibility challenges.
    • Creation of advanced prototypes and high-fidelity mockups to validate user journeys and key interactions.
    • Close collaboration with developers, project managers, and medical teams to align business, technical, and real-world usage requirements.
    • Contribution to co-design workshops and feedback sessions for continuous user experience improvement.
    • Ensuring UX and accessibility consistency across the ecosystem's various applications and modules.
    • Contribution to enhancing interface quality in line with internal and regulatory standards in the healthcare sector.

    TECHNICAL ENVIRONMENT:

    Figma, Storybook, Jira, AI-based tools
    User Interface Design User Experience Design Workshop Facilitation Accessibility Ergonomic Audits
  • VERSUS wine
    UX-UI Designer
    WINE AND SPIRITS
    September 2024 - Today (1 year and 11 months)
    Strasbourg, France

    CONTEXT:

    Worked as a UX Designer on the optimization and improvement of the user experience for an international online store dedicated to wine professionals. Developed by VERSUS DISTRIBUTION, this platform allows users to order and sell multi-supplier products through an auction system, while offering advanced features for order management, shipping organization, invoice downloading, and sending commercial offers.
    My mission: to streamline the user experience, harmonize interfaces, and improve navigation for intuitive, efficient, and accessible platform use.

    TASKS AND RESPONSIBILITIES:

    • UX audit of existing platforms, including analysis of journeys, key interactions, and initial functional accessibility criteria, to identify areas for improvement.
    • Development and prioritization of UX recommendations, incorporating user feedback, business constraints, and accessibility goals.
    • Redesign and optimization of interfaces, ensuring visual consistency of projects and adherence to brand guidelines and identity.
    • Implementation and evolution of a design system, strengthening existing foundations and integrating accessibility best practices for greater inclusivity.
    • Co-design workshops with developers and the project manager to align business, technical, and user needs.
    • Creation of wireframes, interactive prototypes, and high-fidelity mockups, ensuring a smooth transition from design to development.
    • Adaptation and optimization of UI components for efficient implementation with Tailwind CSS.
    • Monitoring and validation of mockup integration by development teams, ensuring fidelity to the designs.

    TECHNICAL ENVIRONMENT:

    Windows, Figma, Illustrator, After effect, Tailwind, HTML, CSS
    User Experience Design User Interface Design Workshop Facilitation Digital Accessibility Ergonomic Audits
  • AXA
    Lead User Interface Designer
    BANKING AND INSURANCE
    June 2022 - March 2024 (1 year and 10 months)
    Strasbourg, France

    CONTEXT:

    Worked as a UX Designer on various web and mobile application journeys for end customers, sellers, brokers, and internal employees (CX, SX, and EX) in the insurance sector.
    My mission: to optimize the user experience, harmonize interfaces, and structure digital journeys to improve process fluidity, tool adoption, and accessibility for all users.

    TASKS AND RESPONSIBILITIES:

    • Design and improvement of interfaces across multiple B2B and B2C applications, ensuring visual consistency and adherence to brand guidelines and identity.
    • Facilitation of co-design workshops and user interviews to align business needs and customer expectations.
    • Implementation and evolution of a design system aimed at standardizing interfaces, accelerating design, and integrating accessibility best practices, adaptable to Atomic Design, Vuetify, and Material UI.
    • Creation of wireframes, functional prototypes, and high-fidelity mockups.
    • Design and creation of documentation and communication on internal digital platforms.
    • Close collaboration with developers and Product Managers in an agile framework (Scrum, Kanban), considering technical constraints and digital accessibility requirements.
    • Analysis of user feedback and UX adjustments to ensure intuitive and effective design.
    • Monitoring and verification of mockup integration by development teams.
    • Contribution to the design system documentation on Zeroheight and Storybook.
    • Training of two apprentices for 1 year.

    TECHNICAL ENVIRONMENT:

    Windows, Figma, Jira, Confluence, Illustrator, Vuetify, Storybook, Zeroheight
    Workshop Facilitation User Interface Design User Experience Design Co-design Workshops User Testing

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Education

  • Master 2 (M2) Information Systems Manager, Software Engineering, Multimedia, Management
    Exia.Cesi
    2015
    Master 2 (M2) Manager des systèmes d'information, Ingénierie logiciel, multimedia, management

Certifications

  • UX Design Certification
    Digital Training Factory
    2024
    User Interface Design User Experience Design Ergonomic Audit User Research User Testing
  • After Effects & Motion Design Certification
    40e Rugissant
    2021
    Motion Design Adobe After Effects Adobe After Effects

Skill set (28)

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