Senior UX/UI Designer - UI Lead

Demartino Law; Paris; Hybride; EUR 60 000 - 90 000; Plein temps

Résumé du poste

Demartino Law is seeking a Senior UI Designer to support the UX Lead in creating scalable online service screens. You will craft wireframes, mockups and interactive prototypes in Figma, while ensuring alignment with the design system and technical feasibility.

You will drive UI consistency, develop system-wide components, advocate accessibility (RGAA), and contribute to upstream discussions. The role demands a strong eye for detail, modular design skills, and the ability to work within an Agile

Qualifications

• Specialized training in UI Design.
• 6+ years of experience in a similar UI role.
• Experience with Design Systems.
• Proficiency in Figma.
• Knowledge of RGAA accessibility rules.
• Understanding of web interface development and Agile.

Responsabilités

• Design wireframes, mockups, and prototypes using Figma, ensuring feasibility and design system adherence.
• Contribute to the evolution of the design system for consistency and maintainability.
• Create graphical test plans to support IT in integrating mockups.
• Serve as UI expert and promote design principles to colleagues.
• Participate in upstream discussions with critical, reasoned feedback.
• Structure and maintain UI assets and processes using a systemic design approach.
• Apply UI design standards (visual hierarchy, readability, interaction consistency).
• Anticipate and design all UI states for a complete experience (loading, error, etc).
• Integrate accessibility principles from the UI stage (RGAA).
• Design robust interfaces for different screen sizes.
• Produce and share clear UI deliverables for stakeholders.
• Step in as needed to ensure continuity in design choices when UX Lead absent.

Connaissances

UI Design

Design Systems

Figma

Accessibility RGAA

Web Design Rules

Agile

Modular Design

Communication

Formation

UI Design Training

Outils

Figma

Description du poste

# Senior UX/UI Designer - UI Lead* Home* Senior UX/UI Designer - UI Lead* February 9, 2026* 0 Comments* By Roberte OkoyaContext The User Experience department is strengthening its team with a UI designer to support the UX lead in this area during the design of online service screens.MISSIONS Reporting to the User Experience Manager, the Senior UI Designer will support a UX Lead across all departments to assist with product-related production. Their responsibilities will include: Designing wireframes, mockups, and prototypes using FIGMA, taking into account technical feasibility and adhering to the design system; contributing to the evolution of the design system to ensure visual consistency and ease of maintenance; creating graphical test plans to support the IT department in integrating mockups ; serving as a UI expert and promoting design principles to internal and external colleagues; actively participating in upstream discussions by providing critical, reasoned, and solution-oriented feedback; and constructively challenging ideas while respecting the framework, constraints, and collective decisions. • Structure, develop, and maintain UI assets and processes according to a systemic design approach. • Apply UI design standards and best practices (visual hierarchy, readability, affordance, interactional consistency). • Anticipate and design all UI states to guarantee a consistent and complete experience (loading, error, success, empty, disabled, edge cases). • Integrate digital accessibility principles (RGAA) from the UI design stage . • Design robust and adaptive interfaces for different screen sizes and usage constraints. • Produce and share clear UI deliverables that can be used by all stakeholders. • Be able to step in as needed to ensure continuity in design choices, even in the absence of the UX Lead.PROFILE & Key Skills Expected: Strong listening, observation, and analytical skills; Proactive approach; Responsiveness; Team spirit; Creative and aesthetic sensibility; Solid understanding of UI and design systems, oriented towards standards, uses, and consistency; Rational and methodical approach to UI design; Strong organizational and structuring skills with a focus on the quality, consistency, and maintainability of deliverables; Ability to explain, justify, and document UI design choices➢ Experience – Knowledge: Specialized training in UI Design: solid foundation in web design rules. Significant experience of at least 6 years in a similar position. Mastery of the UI design process. Experience designing using a Design System. Proficiency in Figma is essential. Knowledge of digital accessibility rules. Good understanding of the principles and constraints of web interface development and the Agile methodology. Proficiency in modular design approaches (atomic design, patterns, components).Application: CV + cover letter + copies of diplomas to be sent to [e-mail]