UX/UI Designer – Applications mobiles - Stest F/H

📍 Job Overview

Job Title: UX/UI Designer – Mobile Applications - Stest F/H

Company: Produit - QA en prod

Location: Rennes, Bretagne, France

Job Type: FULL_TIME

Category: Product Design / UX/UI

Date Posted: April 02, 2026

Experience Level: Mid-Level (2-5 years)

Remote Status: On-site

🚀 Role Summary

• Drive the end-to-end design lifecycle for consumer-facing mobile applications, from initial user research and ideation through to prototyping, rigorous testing, and seamless handoff to development.

• Collaborate closely within a multidisciplinary agile team, including Product Owners, UX Researchers, and iOS/Android developers, to ensure cohesive product development.

• Actively contribute to and maintain a transverse design system, ensuring visual consistency and adherence to design best practices across all mobile products.

• Champion a data-informed design approach, leveraging user data and analytics to validate design decisions and prioritize user impact, accessibility, and performance.

• Utilize a modern and robust toolset, including Figma, FigJam, and Maze, to streamline the design process and enhance collaboration within the team.

📝 Enhancement Note: While the provided description is for a UX/UI Designer, this enhancement will frame it within an operations context where applicable, focusing on process efficiency, data utilization, and cross-functional collaboration, which are core to operations roles. The primary focus remains on UX/UI, but the language will highlight operational aspects of the design process.

📈 Primary Responsibilities

• Manage the complete design process for mobile applications, encompassing user research, concept generation, wireframing, interactive prototyping, and usability testing.

• Conduct user research activities, including interviews, surveys, and competitor analysis, to gather insights that inform design decisions and product strategy.

• Develop high-fidelity interactive prototypes to effectively communicate design concepts and user flows to stakeholders and development teams.

• Execute usability testing sessions using tools like Maze to gather feedback, iterate on designs, and ensure optimal user experience and task completion rates.

• Prepare and deliver comprehensive design specifications and assets for developers, ensuring a smooth and accurate integration of designs into the live product (handoff).

• Monitor the implementation of designs by development teams (iOS/Android), providing support and making necessary adjustments to maintain design integrity and performance.

• Contribute to the evolution and maintenance of the company's design system, ensuring consistency in UI components, patterns, and visual language across all mobile applications.

• Advocate for and implement accessibility standards (WCAG) to ensure all applications are usable by individuals with diverse abilities.

• Collaborate with Product Owners and development teams in an agile framework, participating in sprint planning, daily stand-ups, and retrospectives to ensure design alignment with project goals.

• Leverage data analytics and user feedback to continuously iterate and improve existing features, focusing on enhancing user engagement, satisfaction, and application performance.

📝 Enhancement Note: The responsibilities have been expanded to detail the operational aspects of the design lifecycle, emphasizing collaboration, process management, and data-driven decision-making, which are crucial for operations professionals.

🎓 Skills & Qualifications

Education: Bachelor's degree in Design, Human-Computer Interaction, Computer Science, or a related field, or equivalent practical experience.

Experience: 2-5 years of professional experience in UX/UI design, with a strong focus on mobile application design.

Required Skills:

• Proven expertise in UX/UI design principles and methodologies for mobile applications (iOS and Android).

• Proficiency in industry-standard design and prototyping tools, specifically Figma and FigJam.

• Experience conducting user research, including qualitative and quantitative methods, to inform design strategy.

• Demonstrated ability to create detailed wireframes, user flows, and high-fidelity interactive prototypes.

• Experience with usability testing platforms such as Maze.

• Familiarity with agile development methodologies and cross-functional team collaboration.

• Understanding of design system principles and experience contributing to or maintaining one.

• Strong understanding of accessibility standards (e.g., WCAG) and their implementation in digital products.

Preferred Skills:

• Experience working within a "data-informed" design culture, utilizing analytics to guide design choices.

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

• Experience with animation and micro-interaction design.

• Previous exposure to product management or business analysis within a tech environment.

• Knowledge of localization and internationalization best practices in UX/UI design.

📝 Enhancement Note: The skills section has been tailored to highlight operations-relevant competencies such as agile methodology, data-informed decision-making, and cross-functional collaboration, common in operational roles.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A curated portfolio showcasing a minimum of 3-5 significant mobile application design projects, demonstrating a clear understanding of the full design lifecycle from discovery to delivery.

• Case studies within the portfolio should detail the problem statement, your specific role and contributions, the design process followed (research, ideation, prototyping, testing), key design decisions made, and the rationale behind them.

• Evidence of iterative design processes, including how user feedback and data were incorporated to refine designs and achieve project objectives.

• Clear articulation of the impact of your designs, ideally with quantifiable metrics (e.g., improvement in conversion rates, task completion times, user satisfaction scores, reduction in support tickets).

Process Documentation:

• Showcase examples of well-documented design processes, illustrating how workflows were established, optimized, and communicated within a team.

• Include documentation related to user research methodologies, usability testing plans, and the synthesis of findings.

• Provide examples of design handoff documentation, ensuring clarity and completeness for development teams.

• Demonstrate how you have contributed to or managed design system documentation, including guidelines, usage examples, and version control.

📝 Enhancement Note: This section emphasizes the operational aspects of portfolio creation, focusing on process documentation, measurable impact, and system iteration, which are critical for operations professionals.

💵 Compensation & Benefits

Salary Range: €38,000 - €48,000 per year.

This range is competitive for a mid-level UX/UI Designer in Rennes, France, considering the experience level and the demand for specialized mobile design skills. The specific offer will depend on the candidate's experience, qualifications, and demonstrated impact.

Benefits:

• Comprehensive health insurance coverage, including medical, dental, and vision.

• Generous paid time off (PTO) policy, including vacation days, public holidays, and sick leave.

• Contribution to retirement savings plans.

• Opportunities for professional development, including training, workshops, and conference attendance.

• Access to a modern and well-equipped office space in Rennes.

• Potential for performance-based bonuses.

• Employee assistance program (EAP) for personal and professional support.

Working Hours: Standard full-time working hours are approximately 40 hours per week, with flexibility often available to accommodate project deadlines and individual work styles within the agile framework.

📝 Enhancement Note: The salary range provided is directly from the input data. The benefits have been inferred based on standard offerings for full-time roles in France and the tech industry, tailored to appeal to design professionals.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Software Development (specifically mobile applications for consumers).

Company Size: The input does not specify exact size, but the mention of a "pôle Design" and "équipe pluridisciplinaire" suggests a medium to large organization with dedicated product teams, likely employing over 100 individuals.

Founded: The founding date is not provided.

Team Structure:

• The UX/UI Designer will be part of a dedicated "pôle Design" and work within a multidisciplinary team.

• This team includes essential roles such as Product Owner, UX Researcher, and specialized iOS/Android developers, indicating a collaborative, product-centric structure.

Methodology:

• The team operates in an "agile" mode, implying iterative development cycles, regular team meetings (stand-ups, retrospectives), and adaptive planning.

• A "data-informed" approach is central, meaning design decisions are guided by user data, analytics, and performance metrics, rather than solely on intuition.

• Emphasis is placed on user impact, accessibility, and overall application performance, indicating a commitment to high-quality, user-centric product development.

Company Website: [Company URL not provided, placeholder for actual URL]

📝 Enhancement Note: Inferred company context based on the job description's phrasing and common structures in tech companies developing consumer mobile applications. The emphasis on "Produit - QA en prod" suggests a company focused on robust product delivery and quality assurance.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned at a mid-level (2-5 years of experience). It requires independent contribution to design tasks, collaboration with cross-functional teams, and participation in strategic design discussions. The designer is expected to manage their workload effectively and contribute to design system evolution.

Reporting Structure: The UX/UI Designer will report to a Design Lead or Head of Design and work closely with the Product Owner of their assigned mobile application(s). Collaboration will be extensive with UX Researchers and iOS/Android developers.

Operations Impact: The UX/UI Designer's impact is measured through the enhancement of user experience, leading to increased user engagement, retention, and satisfaction. Their work directly influences the perceived quality and usability of the company's flagship mobile applications, contributing to business objectives like user acquisition and revenue growth.

Growth Opportunities:

• Specialization: Opportunity to deepen expertise in specific areas of mobile UX/UI, such as interaction design, accessibility, or design systems.

• Leadership: Potential to grow into a Senior UX/UI Designer role, mentoring junior designers, leading design initiatives, and taking ownership of larger product areas.

• Cross-functional: Transition into Product Management or UX Research roles by leveraging deep understanding of user needs and product strategy gained in this position.

• Skill Development: Continuous learning through access to modern design tools, data analysis, and participation in an agile, data-informed environment.

📝 Enhancement Note: Career growth pathways are outlined, focusing on typical progression within a design role and potential lateral moves within a product-focused organization, emphasizing the operational aspects of career development.

🌐 Work Environment

Office Type: The role is described as "On-site" with a mention of being in Rennes. This suggests a traditional office environment where in-person collaboration is prioritized.

Office Location(s): Rennes, Bretagne, France. Rennes is a vibrant city with a growing tech scene, offering a good quality of life and a hub for innovation.

Workspace Context:

• Collaborative Environment: The emphasis on a "multidisciplinary team" and "agile mode" indicates a highly collaborative workspace designed for frequent interaction and knowledge sharing among designers, product managers, and developers.

• Tooling: The workspace is equipped with modern design tools like Figma, FigJam, and Maze, facilitating efficient digital collaboration and prototyping.

• Data-Driven Culture: The environment fosters a data-informed approach, meaning designers will have access to user data and analytics platforms to inform their work and demonstrate impact.

Work Schedule: The standard work schedule is approximately 40 hours per week, typical for full-time employment. The agile methodology may introduce periods of intense focus but generally supports flexible work patterns within the team's established rhythms.

📝 Enhancement Note: The work environment is described based on the "On-site" indicator and the collaborative nature of agile teams, emphasizing the operational benefits of in-person interaction and access to necessary tools.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your application, resume, and portfolio to assess your qualifications and design experience against the role requirements.

• Technical Interview/Portfolio Review: A dedicated session where you will present your portfolio, discuss specific case studies, and answer questions about your design process, problem-solving skills, and experience with tools like Figma and mobile design. Be prepared to discuss how you've used data and user feedback.

• Team/Cultural Fit Interview: An opportunity to meet with members of the multidisciplinary team (Product Owner, developers, potentially another designer) to assess your collaboration style, communication skills, and fit within the agile and data-informed culture.

• Final Interview: A discussion with a hiring manager or senior leader to finalize the decision, potentially including a design challenge or strategic discussion about mobile product development.

Portfolio Review Tips:

• Curate Strategically: Select projects that best highlight your mobile UX/UI skills, problem-solving abilities, and impact. Ensure a strong representation of your work in Figma and on mobile platforms.

• Tell a Story: For each case study, clearly articulate the user problem, your role, the process, your key decisions, and the outcomes. Quantify results whenever possible.

• Highlight Process & Data: Emphasize your iterative design process and how you used user research, testing, and data to inform your decisions and measure success.

• Showcase Design System Contributions: If you have experience with design systems, clearly present your contributions and understanding of their importance for consistency and efficiency.

• Be Prepared for Questions: Anticipate questions about your design rationale, how you handle feedback, your experience with agile, and your understanding of accessibility and data-informed design.

Challenge Preparation:

• If a design challenge is presented, focus on understanding the core problem, defining your approach, and clearly articulating your thought process.

• Practice time management to ensure you can deliver a well-considered solution within the given timeframe.

• Be ready to present your solution and rationale, similar to a portfolio review, focusing on how you would address the challenge from a UX/UI and operational efficiency perspective.

📝 Enhancement Note: The interview process and portfolio review tips are tailored to a UX/UI role, emphasizing the presentation of design work and process, with specific advice on highlighting data usage and agile collaboration.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: The core tool for UI design, wireframing, prototyping, and collaboration. Proficiency is essential for creating high-fidelity designs and interactive prototypes.

• FigJam: Utilized for brainstorming, ideation, workshop facilitation, and collaborative diagramming, supporting the early stages of the design process.

• Maze: A platform for remote usability testing and user feedback collection, enabling rapid iteration and data-driven design validation.

Analytics & Reporting:

• While specific tools aren't listed, expect to work with mobile analytics platforms (e.g., Amplitude, Mixpanel, Google Analytics for Mobile) to understand user behavior and measure the impact of design changes.

CRM & Automation:

• Not directly relevant to the UX/UI Designer role, but familiarity with how CRM data might inform user segmentation or personalization efforts could be beneficial.

• Understanding of development workflows and project management tools (e.g., Jira) is expected due to the agile environment.

📝 Enhancement Note: The tools listed are directly from the input and are standard for UX/UI design. The interpretation focuses on their operational use in streamlining the design process and enabling data-informed decisions.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A deep commitment to understanding and serving the end-user, prioritizing their needs, experience, and accessibility in all design decisions.

• Data-Informed Decision Making: Relying on user data, analytics, and testing results to guide design choices and measure impact, fostering an objective and evidence-based approach.

• Collaboration & Teamwork: Strong emphasis on working effectively within multidisciplinary teams, valuing diverse perspectives and fostering open communication to achieve shared goals.

• Agility & Adaptability: Embracing agile methodologies to respond quickly to feedback, iterate on designs, and adapt to evolving project requirements and market dynamics.

• Quality & Performance: A dedication to high standards of design execution, ensuring products are not only aesthetically pleasing and functional but also performant and reliable.

Collaboration Style:

• Cross-functional Integration: Seamless collaboration with Product Owners, UX Researchers, and developers, involving them early and often in the design process.

• Feedback Exchange: An open culture for giving and receiving constructive feedback on designs, fostering continuous improvement and shared ownership.

• Knowledge Sharing: Proactive sharing of design insights, best practices, and learnings through team meetings, documentation, and informal discussions.

📝 Enhancement Note: The team culture and values are inferred from keywords like "agile," "data-informed," and the multidisciplinary team structure, aiming to reflect a modern, collaborative, and results-oriented environment.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing User Needs with Business Goals: Effectively translating user research and data into designs that satisfy user needs while also meeting business objectives and technical constraints.

• Maintaining Design Consistency: Ensuring a cohesive user experience across multiple mobile applications and feature updates, especially with a growing product portfolio and evolving design system.

• Integrating Data Effectively: Moving beyond simply collecting data to actively and systematically integrating data insights into the design process for meaningful improvements.

• Evolving Mobile Design Trends: Staying current with rapid advancements in mobile UI/UX, platform guidelines (iOS/Android), and new interaction paradigms.

Learning & Development Opportunities:

• Advanced UX/UI Techniques: Opportunities to deepen expertise in areas like interaction design, animation, accessibility, or specialized mobile UX patterns.

• Data Analysis Skills: Exposure to and training in using mobile analytics tools to better understand user behavior and measure design impact.

• Design System Mastery: Becoming a key contributor or owner of the design system, developing expertise in its governance and scalable implementation.

• Agile and Product Development Cycles: Gaining a comprehensive understanding of the product development lifecycle and effective collaboration within agile frameworks.

📝 Enhancement Note: Challenges and growth opportunities are framed to reflect common hurdles and development paths within a dynamic mobile product design environment, highlighting the operational aspects of problem-solving and continuous learning.

💡 Interview Preparation

Strategy Questions:

• "Describe your process for designing a new feature for a mobile application, starting from a user problem statement. How would you incorporate user research and data?"

• "How do you ensure accessibility is integrated into your design process from the outset?"

• "Walk us through a project where you had to balance conflicting stakeholder requirements or technical limitations with user needs. What was your approach and outcome?"

Company & Culture Questions:

• "What interests you about our mobile applications and our company?"

• "How do you approach collaboration with developers and product managers in an agile environment?"

• "Describe your understanding of a 'data-informed' design culture. How have you applied this in previous roles?"

Portfolio Presentation Strategy:

• Structure Your Narrative: For each project, clearly define the problem, your role, the process, the solution, and the impact. Use visuals effectively to showcase your designs.

• Highlight Iteration: Show how you used feedback and data to refine your designs. Demonstrate your problem-solving skills through your design decisions.

• Quantify Impact: Whenever possible, present metrics that demonstrate the success of your designs (e.g., user satisfaction, task completion rates, engagement).

• Technical Proficiency: Be ready to discuss your proficiency with Figma, FigJam, and Maze, and how these tools facilitate your workflow.

📝 Enhancement Note: Interview preparation advice is tailored to a UX/UI role, focusing on common questions about design process, collaboration, data usage, and portfolio presentation, with an emphasis on operational efficiency and measurable results.

📌 Application Steps

To apply for this UX/UI Designer position:

• Submit your application through the provided link on careers.werecruit.io.

• Portfolio Customization: Ensure your resume and portfolio are tailored to highlight your experience with mobile application design, Figma, agile methodologies, and data-informed approaches. Select projects that best showcase your end-to-end design process and quantifiable impact.

• Resume Optimization: Clearly articulate your responsibilities and achievements using keywords from the job description (e.g., UX Design, UI Design, Mobile App Design, Prototyping, Figma, Agile, Accessibility, Data-informed). Quantify your accomplishments where possible.

• Prepare Portfolio Presentation: Practice presenting 2-3 key case studies from your portfolio, focusing on your process, decision-making, and the impact of your designs. Be ready to discuss your experience with user research, testing, and design systems.

• Company Research: Familiarize yourself with "Produit - QA en prod" and their mobile applications. Understand their target audience and any publicly available design guidelines or user feedback to demonstrate your genuine interest and understanding of their product ecosystem.

⚠️ 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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