UI Designer Senior – Design System (Services connectés) – Paris 12e

📍 Job Overview

Job Title: UI Designer Senior – Design System (Services connectés)

Company: Tilencia

Location: Paris, Île-de-France, France

Job Type: Full-time

Category: User Experience (UX) / User Interface (UI) Design, Design Systems

Date Posted: March 02, 2026

Experience Level: Senior (5-10 years)

Remote Status: Hybrid (3 days minimum in office)

🚀 Role Summary

• This senior UI Designer role focuses on enhancing user experience for connected services within a major national service provider, impacting both individual (B2C) and business (B2B) customer journeys.

• The position is transverse, requiring close collaboration with the UX Lead responsible for the front-office Design System to ensure UI consistency and component compliance across digital products.

• Key responsibilities include the creation of wireframes, mockups, and prototypes using Figma, contributing to the evolution and maintenance of the Design System, and ensuring visual coherence across all UI states.

• A strong emphasis is placed on integrating accessibility standards (RGAA) from the design conception phase and performing graphic validation to ensure seamless technical integration.

📝 Enhancement Note: While the raw job description focuses on UI Design, the company's core business in Cybersecurity and DevOps suggests that the "Services connectés" context might involve digital platforms for managing these services, requiring a robust and secure user experience. The emphasis on "fort trafic" indicates a need for scalable and efficient design solutions.

📈 Primary Responsibilities

• Design high-fidelity wireframes, detailed mockups, and interactive prototypes using Figma, ensuring technical feasibility and alignment with project requirements.

• Contribute significantly to the evolution and ongoing maintenance of the front-office Design System, including its components, patterns, assets, and documentation.

• Ensure strict visual coherence across all digital interfaces and comprehensive coverage of all user interface states (e.g., loading, error, success, empty, disabled, edge cases).

• Conduct thorough graphic validation (recettes graphiques) and actively support the IT Department (DSI) in the integration process through conformity reviews and corrective feedback.

• Integrate accessibility standards, specifically RGAA (General Regulations on Accessibility for Public Administrations), from the initial design stages to ensure inclusive user experiences.

• Produce clear, structured, and well-documented deliverables, and actively participate in design acculturation initiatives with various stakeholders.

📝 Enhancement Note: The responsibility for "acculturation design" suggests the need for strong communication and presentation skills to evangelize design best practices and the value of the Design System across different departments, particularly IT and product teams.

🎓 Skills & Qualifications

Education: Not specified, but a degree in Design, HCI, or a related field is often preferred for senior roles.

Experience: Minimum of 6 years of experience in UI design, with a proven track record at a senior level.

Required Skills:

• Mastery of Figma: Expertise in creating and managing components, variants, libraries, and file organization is indispensable.

• Proven Design System Experience: Demonstrated ability in creating, evolving, maintaining, and documenting a Design System.

• Web & Product Culture: Understanding of web integration constraints, experience working in Agile environments, and proficiency in modular design principles (e.g., Atomic Design, component-based architecture).

• Accessibility Knowledge: Familiarity with RGAA (General Regulations on Accessibility for Public Administrations) accessibility rules.

Preferred Skills:

• Experience with other design and prototyping tools.

• Familiarity with front-end development principles (HTML, CSS, JavaScript) to better understand integration constraints.

• Experience working on high-traffic digital platforms or enterprise-level applications.

• Knowledge of user research methodologies and how to translate insights into design decisions.

📝 Enhancement Note: The requirement for 6+ years of experience and mastery of Figma with a focus on Design Systems points to a need for a candidate who can not only design but also strategize and govern design at a systemic level, influencing product development across multiple teams.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrate significant contributions to at least one established Design System, showcasing its evolution and impact.

• Include detailed case studies highlighting the design process for complex digital products, from wireframing to high-fidelity mockups and prototypes.

• Showcase examples of UI component libraries and their application across different product interfaces.

• Present work that explicitly addresses and integrates accessibility standards (RGAA), with clear explanations of the design decisions made.

Process Documentation:

• Examples of workflow design and optimization for UI development processes.

• Documentation showcasing the implementation and iteration of design components within a Design System.

• Evidence of how design processes were measured for efficiency and user satisfaction on previous projects.

📝 Enhancement Note: Given the role's focus on a Design System and its transverse nature, the portfolio should strongly emphasize the candidate's ability to create reusable design patterns, manage design consistency across multiple products, and document design decisions clearly for developer and stakeholder consumption.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for a Senior UI Designer with 6+ years of experience in Paris, France, the estimated salary range is €55,000 - €70,000 per year. This range accounts for the hybrid work model and the specific expertise in Design Systems and accessibility.

Benefits:

• Competitive salary and potential for performance-based bonuses.

• Comprehensive health insurance coverage (mutuelle) as per French law and company policy.

• Reimbursement of public transportation costs for commutes to the Paris office.

• Opportunities for professional development, training, and attending design conferences.

• Access to internal coaching and career development programs offered by Tilencia.

• A collaborative and dynamic work environment with a focus on employee well-being.

Working Hours: Full-time (typically 35-40 hours per week as per French labor law). The role requires a minimum of 3 days per week on-site in the Paris 12e office, with flexibility for remote work on other days.

📝 Enhancement Note: Salary estimation is based on data from French job boards and industry salary surveys for senior UI/UX roles in Paris, considering the specialized nature of Design System expertise. The company's values ("L'humain au centre," "Suivi, coaching") suggest a strong focus on employee benefits and development.

🎯 Team & Company Context

🏢 Company Culture

Industry: Consulting, specializing in Cybersecurity and DevOps. The specific project is for a national service provider in the B2C/B2B sector.

Company Size: Tilencia is a consulting firm. While the exact size isn't specified, consulting firms often have a diverse client base and project-based teams. The client is described as a "grand acteur national de services," implying a large organization.

Founded: Tilencia was founded with a clear mission to focus on human-centric values, talent detection, and personalized solutions.

Team Structure:

• The UI Designer will be part of an "Expérience Utilisateur" team within the client organization, reporting to the "UX Lead responsable du Design System front-office."

• The role is transverse, interacting with various product teams, developers (DSI), and stakeholders across B2C and B2B services.

Methodology:

• The team operates within an Agile framework, requiring adaptability and iterative design processes.

• Emphasis on data-driven design decisions, though the role primarily focuses on UI design and adherence to established systems and guidelines.

• Workflow planning will involve close coordination with development teams to ensure design feasibility and efficient implementation of UI components.

Company Website: [Tilencia Company URL - Not Provided in Input, Placeholder]

• Note: The provided input has organization_url: null. A placeholder is used here. If the URL were available, it would be listed.

📝 Enhancement Note: Tilencia's stated values ("L'humain au centre," "Déttection de talents," "Suivi, coaching," "Solutions cousues main," "Prendre du plaisir") indicate a supportive and people-oriented culture within the consulting firm, which likely extends to how they manage their consultants on client projects. The client's nature as a "grand acteur national de services" suggests a structured, process-driven environment with a strong focus on reliability and compliance.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a Senior UI Designer, indicating a high level of individual contribution and expertise. It requires not just execution but also strategic input into the Design System and design processes.

Reporting Structure: The Senior UI Designer will report to the UX Lead for the front-office Design System and will work closely with product managers, developers (DSI), and potentially other UX/UI designers.

Operations Impact: The role has a direct impact on the user experience of high-traffic digital platforms for both individual and business customers. By ensuring UI consistency and accessibility, it contributes to user satisfaction, engagement, efficiency, and brand perception. The Design System's success is crucial for faster product development and reduced design debt.

Growth Opportunities:

• Specialization: Deepen expertise in Design Systems, accessibility standards (RGAA), and potentially UX leadership within large organizations.

• Mentorship: Opportunity to mentor junior designers and contribute to the design team's overall growth and skill development.

• Strategic Influence: Play a key role in shaping the future of the Design System and influencing design strategy across multiple products.

• Consulting Career: Within Tilencia, this role provides exposure to large-scale projects, offering pathways to more senior consulting roles, client management, or specialized expertise leadership.

📝 Enhancement Note: The "transverse" nature of the role and its focus on a Design System for a large client implies significant exposure to enterprise-level design challenges and the opportunity to develop skills in cross-functional collaboration and influencing stakeholders, which are critical for career advancement in design operations and product strategy.

🌐 Work Environment

Office Type: The role is hybrid, requiring a minimum of 3 days per week on-site at the client's office in Paris 12e. This suggests a corporate office environment typical of a large national service provider.

Office Location(s): Paris 12e, France. This location is accessible via public transportation, a key consideration for daily commutes.

Workspace Context:

• The environment is likely collaborative, with designers working alongside product teams and developers.

• Access to necessary design tools (Figma) and potentially other project management and communication platforms will be provided.

• Opportunities for direct interaction with UX Leads, product managers, and development teams to gather feedback and ensure design alignment.

Work Schedule: Standard full-time business hours, with the flexibility to work remotely for up to 2 days per week. The hybrid model aims to balance team collaboration and individual focus.

📝 Enhancement Note: The emphasis on 3 days minimum on-site indicates a preference for in-person collaboration for aspects of design system work, such as workshops, design reviews, and direct team interaction, which are crucial for maintaining design coherence and fostering team cohesion.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: Review of CV and portfolio to assess experience with Figma, Design Systems, and Design System evolution.

• Technical Interview: Discussion focused on UI design principles, Figma proficiency, Design System best practices (creation, maintenance, documentation), and accessibility (RGAA). Candidates may be asked to walk through their portfolio case studies.

• Design Challenge/Case Study: A practical exercise or a detailed review of a portfolio case study might be required to evaluate problem-solving skills, design thinking, and ability to articulate design decisions and their impact. This could involve critiquing an existing interface or proposing solutions for a given scenario.

• Manager/Team Interview: Assessment of soft skills, cultural fit with Tilencia and the client, collaboration style, and understanding of Agile methodologies.

Portfolio Review Tips:

• Highlight Design System Contributions: Clearly articulate your role, responsibilities, and specific achievements in creating, evolving, or maintaining a Design System. Showcase component libraries and their impact.

• Showcase Figma Mastery: Demonstrate advanced Figma skills, including the use of components, variants, auto-layout, and library management.

• Detail the Process: For each case study, explain your design process from problem definition to final solution, emphasizing how you addressed technical constraints and user needs.

• Emphasize Accessibility: Explicitly detail how you incorporated RGAA guidelines into your designs and any specific accessibility challenges you overcame.

• Documented Deliverables: Include examples of well-structured documentation, style guides, or component specifications that you produced.

Challenge Preparation:

• Be prepared to discuss your approach to maintaining UI consistency across multiple products and platforms.

• Anticipate questions about how you handle design feedback, disagreements, and collaboration with developers.

• Review common accessibility guidelines and best practices relevant to web applications.

• Familiarize yourself with Agile methodologies and how design integrates into sprint cycles.

📝 Enhancement Note: The emphasis on a "Design System" and "Services connectés" suggests that interviewers will be looking for a candidate who can think systematically and understand how design contributes to the broader technical architecture and user experience of complex digital services.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Indispensable for wireframing, mockups, prototyping, and Design System management. Mastery of its advanced features (components, variants, libraries, plugins) is critical.

• Design System Management Tools: While Figma itself is a primary tool, understanding how to structure and manage Design System files and potentially using related tools for documentation or version control.

Analytics & Reporting:

• Familiarity with analytics tools (e.g., Google Analytics, Adobe Analytics) to understand user behavior and inform design decisions, though direct use might be limited for this UI-focused role.

CRM & Automation:

• Not directly applicable to this UI Design role, but awareness of how CRM and automation tools impact user journeys might be beneficial.

📝 Enhancement Note: The explicit mention of Figma as indispensable highlights its central role. Beyond Figma, the candidate should be comfortable with collaborative platforms (like Jira, Confluence) often used in Agile environments for communication and documentation.

👥 Team Culture & Values

Operations Values:

• Human-Centricity: Tilencia emphasizes placing people at the center, suggesting a supportive team environment where individual contributions are valued.

• Talent Detection & Development: A focus on identifying and nurturing talent, indicating opportunities for professional growth and skill enhancement.

• Collaboration & Pleasure: Encouraging teamwork and finding enjoyment in work, pointing towards a positive and engaging team dynamic.

• Solution-Oriented: A drive to provide tailored solutions, implying a proactive and problem-solving approach within the design team.

Collaboration Style:

• Cross-functional Integration: Close collaboration with UX Leads, product managers, and developers (DSI) is essential for Design System governance and implementation.

• Constructive Challenge: The role requires the ability to constructively challenge ideas and propose solutions, fostering a culture of continuous improvement.

• Documentation & Knowledge Sharing: Producing clear documentation and contributing to design acculturation shows a commitment to sharing knowledge and best practices.

📝 Enhancement Note: Tilencia's values suggest a culture that supports its consultants in developing their skills and well-being, likely translating into a positive and growth-oriented environment for the Senior UI Designer on their client project. The client's likely corporate culture will also influence day-to-day interactions.

⚡ Challenges & Growth Opportunities

Challenges:

• Maintaining Consistency: Ensuring UI consistency across a large client's diverse B2C and B2B digital products, especially with high traffic.

• Design System Adoption: Driving the adoption and adherence to the Design System across multiple teams and products, overcoming potential resistance.

• Balancing Design & Technical Feasibility: Designing within the constraints of existing technical architecture and integration capabilities.

• Accessibility Integration: Ensuring full compliance with RGAA standards, which can be complex and require ongoing effort.

Learning & Development Opportunities:

• Advanced Design System Strategy: Gaining deeper insights into the strategic management and governance of enterprise-level Design Systems.

• Accessibility Expertise: Becoming a subject matter expert in web accessibility (RGAA) for digital platforms.

• Cross-functional Influence: Developing skills in influencing stakeholders and driving design adoption within a large organization.

• Consulting Skills: Enhancing problem-solving, communication, and client management skills through Tilencia's coaching and project experience.

📝 Enhancement Note: The challenges highlight the need for a candidate who is not only technically proficient but also possesses strong strategic thinking, communication, and change management skills to effectively implement and govern a Design System in a large corporate environment.

💡 Interview Preparation

Strategy Questions:

• "Can you describe your experience in creating or evolving a Design System? What were the key challenges and how did you address them?" - Prepare to detail your process, the tools used (especially Figma), and the impact of your contributions.

• "How do you approach ensuring UI consistency across multiple products and platforms, especially in a high-traffic environment?" - Focus on your understanding of Design Systems, component-based design, and governance.

Company & Culture Questions:

• "What interests you about Tilencia's focus on Cybersecurity and DevOps, and how do you see it relating to UI design for connected services?" - Show awareness of the company's core business and how design plays a role in secure, efficient digital services.

• "How do you typically collaborate with developers and product managers in an Agile setting?" - Discuss your communication style, feedback mechanisms, and understanding of the development lifecycle.

Portfolio Presentation Strategy:

• Structure: Organize your portfolio to clearly highlight your Design System contributions and complex UI design projects. Use case studies that demonstrate your process, problem-solving, and impact.

• Figma Showcase: Be ready to demonstrate your Figma skills live or through detailed walkthroughs of your files, showcasing your component architecture and library organization.

• Metrics & Impact: Quantify the impact of your work where possible (e.g., improved usability, faster development cycles, increased accessibility compliance).

• Storytelling: Frame your projects as stories, explaining the challenge, your approach, the solution, and the outcome.

📝 Enhancement Note: Interviewers will likely probe your understanding of how a Design System facilitates not just visual consistency but also efficiency in development and a more robust, secure user experience, especially in the context of "Services connectés" which may imply security-sensitive applications.

📌 Application Steps

To apply for this operations position:

• Submit your application through the provided link on SmartRecruiters.

• Portfolio Customization: Ensure your portfolio prominently features your experience with Figma and Design Systems. Highlight projects where you contributed to component creation, evolution, or maintenance, and explicitly detail your approach to accessibility (RGAA).

• Resume Optimization: Tailor your CV to emphasize your 6+ years of UI design experience, your mastery of Figma, your Design System expertise, and your understanding of Agile methodologies and accessibility. Use keywords from the job description such as "UI Designer," "Design System," "Figma," "RGAA," and "Agile."

• Interview Preparation: Practice articulating your design process, your contributions to Design Systems, and how you ensure UI consistency and accessibility. Be ready to discuss your experience with technical feasibility and collaboration with development teams.

• Company Research: Familiarize yourself with Tilencia's mission, values, and core services (Cybersecurity, DevOps). Understand the client's role as a "grand acteur national de services" and the implications for digital products.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.

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