Product Designer Senior H/F

📍 Job Overview

Job Title: Product Designer Senior H/F

Company: NEXTON

Location: Paris, Île-de-France, France

Job Type: Temps complet (Full-time)

Category: Product Design / UX/UI Design

Date Posted: March 30, 2026

Experience Level: 5-10 years

Remote Status: On-site

🚀 Role Summary

• Lead the design of intuitive and high-converting user experiences for critical transactional journeys, including purchase funnels and subscription processes.

• Drive conversion rate optimization through data-driven insights, A/B testing, and iterative design improvements.

• Collaborate closely with Product Managers, developers, and data teams to ensure seamless delivery of user-centric solutions.

• Play a key role in the discovery phase, translating user needs and business objectives into actionable UX strategies.

• Contribute to the evolution and consistent application of the company's Design System to ensure scalability and coherence across products.

📝 Enhancement Note: This role focuses on a Senior Product Designer with a strong emphasis on conversion optimization and transactional user journeys within a large enterprise client context. The "H/F" designation indicates the role is open to all genders.

📈 Primary Responsibilities

• Design fluid and high-performing user experiences for critical transactional journeys, including purchase funnels, subscription processes, and onboarding flows.

• Identify user friction points and propose concrete solutions to enhance conversion rates through A/B testing, iterative design, and data analysis.

• Actively participate in discovery phases, including understanding needs, analyzing user behavior, and defining target user journeys.

• Create high-fidelity prototypes and support development teams through to production, ensuring the quality of the implemented user experience.

• Collaborate closely with Product Managers, developers, and data teams to co-create relevant and measurable solutions.

• Contribute to the creation, evolution, and proper utilization of the Design System to ensure consistency and scalability.

• Embrace a test-and-learn approach, leveraging user data to continuously improve user journeys and product performance.

📝 Enhancement Note: The responsibilities highlight a strong focus on measurable outcomes (conversion optimization, data analysis) and close collaboration within an agile product development environment.

🎓 Skills & Qualifications

Education: While not explicitly stated, a degree in Design, Human-Computer Interaction (HCI), Psychology, or a related field is typically expected for senior design roles.

Experience:

Required Skills:

• Expertise in UX/UI Design principles and best practices.

• Proven ability to optimize conversion rates and design complex transactional paths.

• Proficiency with design and prototyping tools, with a strong emphasis on Figma and FigJam.

• Experience working within Agile methodologies and environments.

• Solid understanding of data analysis, A/B testing, and leveraging user insights.

• Strong ability to contribute to and utilize Design Systems for consistency and efficiency.

• Excellent communication and collaboration skills, with the ability to articulate design decisions and defend design choices.

Preferred Skills:

• Experience with user research methodologies beyond basic data analysis.

• Familiarity with front-end development concepts to facilitate collaboration with engineers.

• Experience working with large enterprise clients or in regulated industries.

• Understanding of accessibility standards (WCAG).

📝 Enhancement Note: The requirements emphasize practical experience and technical proficiency in industry-standard tools, with a clear focus on performance-driven design outcomes.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a minimum of 3-5 detailed case studies demonstrating end-to-end product design processes for complex transactional journeys.

• Highlight projects where you were instrumental in optimizing conversion rates or improving key user experience metrics.

• Include examples of your work with design systems, illustrating contributions to their development or consistent application.

• Demonstrate proficiency in Figma and FigJam through your portfolio artifacts.

Process Documentation:

• For each case study, clearly outline the UX discovery process undertaken.

• Detail the prototyping and user testing methodologies employed.

• Showcase how data analysis and A/B testing informed design iterations and improvements.

• Illustrate your collaboration process with Product Managers, developers, and data teams.

📝 Enhancement Note: A strong portfolio is crucial, showcasing not just aesthetic design but also strategic thinking, problem-solving, and measurable impact on business goals, particularly conversion.

💵 Compensation & Benefits

Salary Range:

Based on industry benchmarks for a Senior Product Designer in Paris, with 5-10 years of experience, the estimated annual gross salary range is typically between €55,000 and €75,000. This range can vary based on the specific client, the complexity of the projects, and the candidate's exact experience and negotiation.

Benefits:

• Dynamic communities for professional networking and support.

• Regular Meetups for skill development and knowledge sharing.

• Access to training programs for continuous learning and career advancement.

• Participation in sporting and festive events for team building and employee well-being.

• Sustainable mobility package to support eco-friendly commuting.

Working Hours:

The standard working hours are approximately 40 hours per week, typical for a full-time position in France. While the role is on-site, there may be some flexibility depending on client and team arrangements.

📝 Enhancement Note: Salary estimation is based on typical French market rates for senior design roles in major tech/consulting hubs like Paris. The provided benefits are standard for consulting firms aiming to attract and retain talent.

🎯 Team & Company Context

🏢 Company Culture

Industry: Consulting, Digital Transformation, IT Services (ESN), Product Development. NEXTON operates at the intersection of these fields, leveraging expertise in digital strategy, design, agile methodologies, product management, and development.

Company Size: Over 450 experts. This indicates a medium-to-large sized consulting firm that offers a solid structure, diverse projects, and a strong network while still maintaining a relatively agile and collaborative internal environment.

Founded: 2011. This suggests a company with established experience and a proven track record, likely having evolved significantly with the digital landscape over the past decade.

Team Structure:

• Operations Team: The role places the designer within a client's grand compte (large account) digital team. The designer will likely be part of a dedicated product/design team within that client's organization, working alongside Product Managers, Developers, and Data Analysts.

• Reporting Structure: Within the client's environment, the designer will report to a Design Lead, Head of Product, or a senior Product Manager. Internally at NEXTON, there may be a community lead or manager for designers.

• Cross-functional Collaboration: The role heavily emphasizes collaboration with Product Managers (for strategy and vision), Developers (for implementation), and Data Teams (for insights and performance tracking).

Methodology:

• Data Analysis & Insights: A strong emphasis on using data (analytics, A/B tests) to understand user behavior and inform design decisions.

• Workflow Planning & Optimization: Focus on designing and optimizing critical user journeys to improve conversion and user experience.

• Automation & Efficiency: While not explicitly stated as an automation role, the use of Design Systems promotes efficiency and scalability.

Company Website: https://www.nexton.com/

📝 Enhancement Note: NEXTON positions itself as a blend of consulting, creative factory, and IT services, indicating a dynamic environment that values expertise and innovation. The role is client-facing within a large account.

📈 Career & Growth Analysis

Operations Career Level: Senior Product Designer. This level signifies a strategic contributor expected to lead design initiatives for complex, high-impact projects. The individual will be responsible for not just execution but also strategic input, problem-solving, and mentoring junior designers if applicable.

Reporting Structure: The Senior Product Designer will report to a senior figure within the client's product team (e.g., Lead Product Designer, Head of Product, Senior Product Manager). They will also likely have a connection to a community or practice lead within NEXTON for professional development and peer support.

Operations Impact: The role's direct impact is on optimizing conversion rates and enhancing user experience within critical business processes like purchasing and subscription. This directly influences revenue generation, customer acquisition, and customer satisfaction, making it a significant contributor to the client's business success.

Growth Opportunities:

• Operations Skill Advancement: Deepen expertise in conversion rate optimization, transactional UX, and data-driven design through challenging client projects.

• Learning & Development: Access to NEXTON's training programs, meetups, and communities to acquire new skills, stay updated on design trends, and explore related fields (e.g., product strategy, UX research).

• Leadership Potential: Opportunity to mentor junior designers, lead design streams on major projects, and potentially transition into roles like Lead Product Designer, Design Manager, or Product Strategist within client organizations or at NEXTON.

📝 Enhancement Note: The growth path emphasizes deepening design expertise, expanding into strategic product thinking, and potentially taking on leadership responsibilities, aligned with a senior-level individual contributor or emerging lead.

🌐 Work Environment

Office Type: The role is on-site within a large enterprise client's office in Paris. This implies a corporate environment, likely with modern office facilities and a structured work setting.

Office Location(s): Paris, France. Specific client office address would be provided upon engagement. Accessibility via public transport in Paris is generally excellent.

Workspace Context:

• Collaborative Environment: Expect a highly collaborative setup, working closely with cross-functional teams (Product Managers, Developers, Data Analysts) in open-plan offices or dedicated project spaces.

• Operations Tools & Technology: Access to the client's IT infrastructure, including design software (Figma, FigJam), collaboration tools, and potentially specific analytics platforms.

• Team Interaction: Frequent interaction with client team members, participation in daily stand-ups, sprint reviews, and design critiques.

Work Schedule: The standard work schedule is full-time (approx. 40 hours/week). While on-site, there might be some flexibility in working hours depending on the client's policies and team agreements, but the core focus is on being present to collaborate effectively.

📝 Enhancement Note: The on-site nature suggests a preference for direct collaboration and integration within the client's existing team structure and workflows.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A recruiter or hiring manager from NEXTON will likely conduct an initial call to assess general fit, motivation, and alignment with NEXTON's values.

• Technical Interview / Portfolio Review: This is a critical stage where you will present your portfolio. Expect to walk through 2-3 key case studies, detailing your process, decision-making, challenges, and impact on conversion and user experience. Be prepared to discuss your experience with Figma, Agile, and data analysis.

• Client Interview: You will likely meet with members of the client's product team (e.g., Product Manager, Lead Designer, or Engineering Lead) to discuss your suitability for the specific client project, assess your collaborative skills, and evaluate your strategic thinking.

• Final Interview: Potentially a final conversation with a senior stakeholder at NEXTON or the client to confirm fit and discuss terms.

Portfolio Review Tips:

• Focus on Impact: Clearly articulate the business problem and the quantifiable results of your design solutions, especially regarding conversion rates.

• Showcase Process: Detail your design thinking, user research, ideation, prototyping, and iteration phases. Explain why you made certain decisions.

• Highlight Collaboration: Provide examples of how you worked effectively with Product Managers, developers, and data teams.

• Demonstrate Tool Proficiency: Use your portfolio to showcase your mastery of Figma and your ability to leverage its features.

• Tailor to the Role: Emphasize projects related to transactional journeys, e-commerce, or subscription services.

Challenge Preparation:

• Be ready for a potential design challenge, either as part of the interview or as a take-home exercise. This might involve optimizing a given user flow or proposing solutions to a specific conversion problem.

• Practice articulating your design rationale clearly and concisely under pressure.

• Prepare to discuss how you would approach a new challenge within the context of a large enterprise and Agile environment.

📝 Enhancement Note: The interview process will heavily weigh your portfolio and your ability to demonstrate tangible results in conversion optimization and user journey design.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Essential for UI design, prototyping, and collaborative workflows.

• FigJam: For brainstorming, user journey mapping, wireframing, and workshop facilitation.

• Design System Tools: Familiarity with tools or methodologies for managing and contributing to design systems.

Analytics & Reporting:

• Web Analytics Platforms: Experience with tools like Google Analytics, Adobe Analytics, or similar platforms to interpret user behavior data and track conversion funnels.

• A/B Testing Tools: Familiarity with platforms like Optimizely, VWO, Google Optimize, or in-house A/B testing frameworks.

CRM & Automation:

• While not a direct CRM role, understanding how user journeys interact with CRM systems or marketing automation platforms can be beneficial for context.

• Collaboration Tools: Proficiency with project management and communication tools such as Jira, Confluence, Slack, or Microsoft Teams.

📝 Enhancement Note: Proficiency in Figma is a non-negotiable requirement, and experience with data analysis and A/B testing tools is critical for demonstrating impact in conversion optimization.

👥 Team Culture & Values

Operations Values:

• Impact-Oriented: A strong focus on delivering measurable business results, particularly in conversion rates and user experience efficiency.

• User-Centricity: Prioritizing the user's needs and experience while balancing them with business objectives.

• Data-Driven Decision Making: Utilizing data analytics and A/B testing to inform design choices and validate hypotheses.

• Collaboration & Teamwork: Working effectively within cross-functional teams, fostering open communication and knowledge sharing.

• Continuous Improvement: Embracing a test-and-learn mindset to constantly refine and enhance products and processes.

Collaboration Style:

• Cross-functional Integration: Expect close collaboration with Product Managers, developers, and data analysts, requiring clear communication and shared understanding of goals.

• Process Review Culture: Openness to feedback, design critiques, and iterative refinement of designs.

• Knowledge Sharing: A culture that encourages sharing best practices, insights, and learnings within design and product teams.

📝 Enhancement Note: The company culture emphasizes tangible results, collaborative problem-solving, and a commitment to continuous improvement, all driven by data and user insights.

⚡ Challenges & Growth Opportunities

Challenges:

• Optimizing Complex Transactional Journeys: Navigating the intricacies of long, multi-step conversion funnels with diverse user segments and technical constraints.

• Balancing Business and User Needs: Effectively advocating for user experience while meeting demanding business objectives and conversion targets.

• Working within Large Enterprise Structures: Adapting to established processes, stakeholder management, and potential bureaucratic hurdles within a large client organization.

• Keeping Pace with Data and Iteration: Continuously analyzing performance data and iterating designs in a fast-paced, data-informed environment.

Learning & Development Opportunities:

• Operations Skill Advancement: Gaining deep expertise in conversion rate optimization, growth design, and UX for financial or subscription services.

• Industry Exposure: Working with major clients like SNCF, Orange, and BNP Paribas provides exposure to diverse industries and large-scale digital challenges.

• Mentorship: Potential for mentorship from senior designers within NEXTON or the client organization.

• Community Engagement: Participating in NEXTON's design communities for knowledge exchange and professional networking.

📝 Enhancement Note: The role presents significant challenges that are directly tied to opportunities for professional growth in a high-impact, data-driven design specialization.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you significantly improved a conversion rate through design. What was your process, and what were the results?"

• "How do you balance user needs with aggressive business goals, such as conversion targets, in your design process?"

• "Walk me through your approach to designing a complex transactional flow, like a multi-step purchase or subscription process."

Company & Culture Questions:

• "What interests you about NEXTON and this specific client project?"

• "How do you typically collaborate with Product Managers, developers, and data analysts?"

• "Describe a challenging situation where you had to defend your design choices. How did you handle it?"

Portfolio Presentation Strategy:

• Structure your case studies to clearly articulate: Problem Statement -> Your Role -> Design Process (Discovery, Ideation, Prototyping, Testing, Iteration) -> Key Decisions & Rationale -> Measurable Outcomes (especially conversion metrics) -> Learnings.

• Be ready to zoom into specific design elements and explain the UX rationale behind them.

• Prepare to discuss your proficiency with Figma and how you use its features for collaboration and efficiency.

• Practice presenting your work concisely and engagingly, anticipating potential questions about your process and impact.

📝 Enhancement Note: Focus your preparation on demonstrating a strategic, data-driven, and collaborative approach to product design, with a proven ability to drive conversion and improve complex user journeys.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided SmartRecruiters link.

• Curate your portfolio: Select 2-3 of your strongest case studies that specifically highlight experience with transactional journeys, conversion optimization, and your process using Figma. Quantify your impact with data whenever possible.

• Tailor your resume: Emphasize your 5+ years of experience in Product Design, specific skills in UX/UI, conversion optimization, A/B testing, data analysis, and proficiency with Figma. Use keywords from the job description.

• Prepare your presentation: Practice walking through your portfolio case studies, focusing on clear communication of your process, decisions, and measurable results. Be ready to discuss challenges and how you overcame them.

• Research NEXTON and the client context: Understand NEXTON's mission and values, and if possible, gain insight into the client's industry (e.g., finance, telecom, transport) to better tailor your responses and demonstrate genuine interest.

⚠️ 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.