Senior Product Designer – UX/UI

📍 Job Overview

Job Title: Senior Product Designer – UX/UI

Company: Demo Datos

Location: Barcelona, Catalonia, Spain

Job Type: Full-time, Permanent Employee

Category: Product Design / UX/UI Operations

Date Posted: 2026-09-03

Experience Level: Senior (10+ years)

Remote Status: On-site

🚀 Role Summary

• Drive end-to-end digital product design for high-volume, international eCommerce platforms, impacting millions of users.

• Specialize in optimizing user journeys across discovery, purchase, conversion, and post-purchase phases to enhance engagement and digital adoption.

• Champion data-driven design strategies, leveraging analytics, experimentation, and A/B testing for continuous improvement.

• Collaborate with cross-functional teams and senior stakeholders to influence product strategy and business decisions within a complex, multi-country environment.

📝 Enhancement Note: While the title is "Senior Product Designer – UX/UI", the responsibilities heavily lean into a "Product Operations" lens by focusing on the entire user lifecycle, data-driven decision-making, and the impact of design on business metrics like conversion and adoption. This role requires a blend of strong design execution and strategic product thinking, akin to a Product Operations role focused on the user experience aspect.

📈 Primary Responsibilities

• Lead the design process from discovery and ideation through to high-fidelity UI implementation for key user journeys: discovery, consideration, purchase, conversion, and post-purchase experiences.

• Create detailed user flows, wireframes, interactive prototypes, and final high-fidelity UI designs using Figma.

• Enhance existing and new digital experiences with a primary focus on improving conversion rates, user engagement, and digital adoption metrics.

• Develop and maintain scalable, responsive, and mobile-first user interfaces, adhering to and contributing to an International Design System.

• Utilize a data-driven approach by employing analytics, experimentation frameworks, and A/B testing to inform design decisions and measure their impact on business objectives.

• Contribute to the evolution and standardization of the International Design System, ensuring consistency and scalability across multiple markets.

• Document design decisions, experiment methodologies, and measurable outcomes to foster knowledge sharing and continuous improvement.

• Navigate and balance the complexities of a multi-country and multi-market operational environment, ensuring global consistency while accommodating local user needs and market specifics.

• Proactively influence and challenge business and product decisions by providing data-backed design insights, even without direct authority.

📝 Enhancement Note: The responsibilities highlight a deep engagement with the entire product lifecycle and a strong emphasis on measurable outcomes, which are core tenets of Product Operations. The role requires not just design execution but also strategic input on how design influences business performance.

🎓 Skills & Qualifications

Education: Not specified, but a Bachelor's or Master's degree in Design, HCI, Computer Science, or a related field is typically expected for senior roles.

Experience: 8-10+ years of progressive experience in UX Design, Product Design, or UX/UI Design.

Required Skills:

• Demonstrated expertise in designing and launching scalable digital products within the eCommerce, marketplace, or high-volume retail sectors.

• Proven international experience working with diverse markets and understanding varied user behaviors and cultural nuances.

• Advanced proficiency in Figma for wireframing, prototyping, and high-fidelity UI design.

• Strong understanding of UX principles, UI design best practices, and the creation/utilization of Design Systems.

• Hands-on experience with analytics platforms, experimentation methodologies, and Conversion Rate Optimization (CRO) techniques.

• Ability to clearly articulate and connect design decisions to key business metrics and ROI.

• A strong portfolio showcasing real-world digital products with a demonstrable emphasis on measurable results and impact.

• Proactive, curious, and results-oriented mindset with a drive for continuous improvement.

• Detail-oriented with a hands-on approach to problem-solving and design execution.

• Ability to challenge the status quo and drive innovation through design.

• Comfortable and effective in working with senior stakeholders and cross-functional teams.

• Skilled in balancing customer needs, business objectives, and technical constraints.

• Collaborative spirit with proven ability to influence within complex organizational structures. Preferred Skills:

• Experience contributing to or leading the development of an International Design System.

• Familiarity with user research methodologies and incorporating qualitative feedback into design.

• Experience with agile development methodologies and working closely with engineering teams.

• Excellent communication and presentation skills in Spanish, in addition to English.

📝 Enhancement Note: The experience requirement of "8-10+ years" suggests a senior individual contributor role with significant autonomy and influence. The emphasis on "results measurable" in the portfolio and the connection to "business metrics" points towards a role that is deeply integrated with business outcomes, a key characteristic of Product Operations.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrate a minimum of 8-10 years of design experience through a curated portfolio of real-world digital products.

• Highlight case studies that clearly articulate the problem, your design process, your specific contributions, and, most importantly, the measurable business results (e.g., increased conversion, engagement, adoption).

• Showcase expertise in designing for high-volume eCommerce, marketplace, or retail environments.

• Include examples of how you've leveraged analytics, A/B testing, or experimentation to drive design improvements and achieve KPIs.

• Present examples of your work with Design Systems, illustrating scalability and consistency. Process Documentation:

• Provide evidence of documenting design decisions, user flows, and rationale for key product features.

• Showcase how you've documented experimentation strategies and their outcomes.

• Include examples of process documentation related to contributing to or maintaining a Design System.

• Demonstrate an ability to document the impact of design interventions on business metrics and user adoption.

📝 Enhancement Note: The explicit requirement for a portfolio with "real products and, especially, measurable results" is critical for this role. It indicates that the company values demonstrable impact over theoretical design exercises, aligning with the performance-driven nature of operations roles.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior Product Designers with 8-10+ years of experience in Barcelona, Spain, the estimated annual salary range is €55,000 - €75,000. This range considers the senior level, specialized experience in eCommerce, and the cost of living in Barcelona.

Benefits:

• Birthday off: A dedicated day off to celebrate your birthday.

• Paid leave improvements: Enhanced paid leave allowances for better work-life balance.

• Private health insurance: Comprehensive private medical coverage for your well-being.

• Extra vacation days based on seniority: Additional paid time off accrued with tenure, recognizing long-term commitment.

• Commitment to diversity and equal opportunities.

Working Hours: 40 hours per week (standard full-time). While the role is on-site, the company culture may offer some flexibility in daily start/end times, common in tech environments, but core hours for collaboration are expected.

📝 Enhancement Note: The salary estimate is based on research from reputable salary aggregators for UX/Product Designers in Spain, adjusted for Barcelona's market and the specified seniority and industry focus. The benefits listed are directly from the job description, with explanations tailored to their value for a professional.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Software Consulting (Microsoft Partner). Pasiona Consulting focuses on designing, developing, and implementing custom software applications across various sectors. This implies a dynamic, client-focused environment that values technological expertise and solution-oriented approaches.

Company Size: Not explicitly stated, but Pasiona Consulting is described as a "consultora tecnológica," suggesting a medium-sized firm rather than a large enterprise. This often translates to a more agile structure where individual contributions have a visible impact.

Founded: Not specified in the provided data.

Team Structure:

• The role is within a product design function, likely collaborating closely with product managers, engineering teams, and potentially other designers.

• As a Senior Designer, you will report into a Design Lead or Head of Product/Design, with a clear reporting structure.

• Cross-functional collaboration is a key aspect, involving close work with product managers, engineers, data analysts, and potentially marketing or sales teams to ensure cohesive product development and successful market launches. Methodology:

• Data analysis and insights are central, with a requirement to use analytics, experimentation, and A/B testing to inform design.

• Workflow planning and optimization are core to the role, focusing on improving user journeys for conversion, engagement, and adoption.

• Automation and efficiency are implied through the use of Design Systems and the goal of creating scalable, reusable design components.

Company Website: https://pasiona.com/

📝 Enhancement Note: The company's description as a "Microsoft Partner" suggests a focus on enterprise-level solutions and a structured approach to technology implementation. The emphasis on "custom software applications" indicates a project-based or client-service model, requiring adaptability and strong problem-solving skills from design.

📈 Career & Growth Analysis

Operations Career Level: This is a Senior Product Designer role, indicating a high level of individual contribution and expertise. It's a position for an experienced professional expected to lead design initiatives, mentor junior designers, and significantly influence product direction. In an operations context, this level implies ownership of key user experience processes and their impact on business outcomes.

Reporting Structure: The Senior Product Designer will likely report to a Design Manager, Head of Product, or a similar leadership role. They will work closely with Product Managers and Engineering Leads, forming part of a product development triad.

Operations Impact: The role has a direct impact on key business metrics such as conversion rates, customer engagement, and digital adoption for high-volume eCommerce platforms. The Senior Product Designer's work is instrumental in driving revenue growth and customer satisfaction by optimizing the user experience across critical touchpoints.

Growth Opportunities:

• Leadership in Design: Potential to grow into a Design Lead or Managerial role, overseeing a team of designers and setting design strategy.

• Specialization: Develop deeper expertise in specific areas like eCommerce UX, international product design, or design system management.

• Product Strategy Influence: Further enhance influence on product roadmap and business strategy through data-driven design advocacy.

• Cross-functional Leadership: Opportunities to lead design initiatives that span multiple product areas or markets.

📝 Enhancement Note: The growth opportunities are framed around career progression within a design discipline but also touch upon strategic influence and leadership, aligning with how senior operations professionals develop their careers.

🌐 Work Environment

Office Type: The role is specified as "On-site" in Barcelona. This suggests a traditional office environment, likely a modern workspace designed for collaboration and productivity.

Office Location(s): C/Nicaragua 137, Barcelona, 08029, Spain. This location is in a well-connected area of Barcelona, facilitating easy access for employees.

Workspace Context:

• The workspace is expected to be collaborative, fostering interaction with product managers, engineers, and fellow designers.

• Access to industry-standard design tools like Figma, as well as analytics and experimentation platforms, will be provided.

• Opportunities for team interaction will be frequent, given the collaborative nature of product development and the on-site work arrangement.

Work Schedule: The standard working hours are 40 per week. While on-site, there may be some flexibility in daily scheduling, but the emphasis on collaboration and cross-functional work suggests a need for consistent presence during core business hours.

📝 Enhancement Note: The on-site requirement suggests a company that values in-person collaboration and team synergy, common in consulting firms where client interaction and team problem-solving are paramount.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess experience, skills, and alignment with the role's requirements. Be prepared to discuss your most impactful projects.

• Design Challenge/Case Study Presentation: You may be asked to present a detailed case study from your portfolio or complete a design exercise. Focus on the "why" behind your design decisions and the measurable impact.

• Interviews with Hiring Team: Discussions with Product Managers, fellow Designers, and potentially Engineering Leads to evaluate your design process, technical skills, collaboration style, and cultural fit.

• Stakeholder Interview: An interview with senior leadership to assess your strategic thinking, ability to influence, and alignment with business goals.

Portfolio Review Tips:

• Focus on Impact: Prioritize case studies that clearly demonstrate quantifiable results (e.g., increased conversion rates, improved user engagement, successful feature adoption). Use data and metrics prominently.

• Process Clarity: Clearly articulate your design process, from problem definition and user research to ideation, prototyping, testing, and iteration. Explain the rationale for each step.

• Tool Proficiency: Showcase your mastery of Figma and any other relevant tools used in your projects.

• E-commerce Specialization: Highlight projects specifically from the eCommerce, marketplace, or retail sectors, demonstrating your understanding of these unique user journeys and business drivers.

• International Context: If applicable, include projects that demonstrate your experience designing for diverse international markets.

Challenge Preparation:

• Understand the Business: Research Demo Datos, Pasiona Consulting, and the eCommerce landscape they operate in. Understand their likely business objectives.

• Metric-Driven: Prepare to discuss how you would measure the success of your design solutions. Think about relevant KPIs for conversion, engagement, and adoption.

• Problem-Solving: Be ready to analyze a given problem, ideate solutions, and articulate your design strategy, justifying your choices with data and user-centered principles.

📝 Enhancement Note: The emphasis on portfolio results and data-driven decision-making is a strong indicator that this role is not just about aesthetics but about driving tangible business outcomes, a key aspect of operations roles.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Advanced proficiency is a mandatory requirement for user flows, wireframes, prototypes, and high-fidelity UI design.

• Design Systems: Experience in utilizing, contributing to, or developing Design Systems for scalability and consistency.

Analytics & Reporting:

• Analytics Platforms: Proficiency with tools like Google Analytics, Adobe Analytics, or similar platforms to track user behavior and measure performance.

• Experimentation & A/B Testing Tools: Experience with platforms like Optimizely, VWO, Google Optimize, or internal experimentation frameworks to drive data-informed design decisions.

• CRO Tools: Familiarity with Conversion Rate Optimization principles and tools to enhance user journeys.

CRM & Automation:

• While not explicitly mentioned for this design role, understanding how design impacts CRM data or automated user journeys within an eCommerce context would be beneficial. Familiarity with the underlying platform's capabilities (e.g., Salesforce Commerce Cloud, Shopify Plus) could be an advantage.

• Project Management Tools: Likely experience with tools such as Jira, Asana, or Trello for workflow management and collaboration with engineering teams.

📝 Enhancement Note: The explicit mention of Figma, analytics, experimentation, and A/B testing highlights the critical need for data-driven design practices, which are central to operations roles focused on performance optimization.

👥 Team Culture & Values

Operations Values:

• Data-Driven Decision Making: A core value, requiring the use of analytics, experimentation, and A/B testing to guide design choices and measure impact.

• Customer Centricity with Business Acumen: Balancing user needs with business goals to drive both customer satisfaction and revenue.

• Efficiency and Scalability: Emphasis on creating reusable design components and adhering to Design Systems to ensure efficient development and consistent user experiences across markets.

• Proactiveness and Initiative: Encouraging individuals to be curious, hands-on, and willing to challenge the status quo to drive improvement.

• Collaboration and Influence: Fostering a team environment where individuals can effectively collaborate with cross-functional partners and influence decisions.

Collaboration Style:

• Cross-functional Integration: Close collaboration with Product Management, Engineering, Data Analysis, and potentially Marketing teams is essential.

• Process Review and Feedback: A culture that likely encourages constructive feedback loops on designs and processes to drive continuous improvement.

• Knowledge Sharing: Practices that promote sharing insights from experiments, user research, and design iterations across teams.

📝 Enhancement Note: The company's stated values of diversity and equal opportunities are foundational. The emphasis on data, efficiency, and collaboration aligns strongly with the operational mindset required in GTM, RevOps, and Sales Ops environments.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing Global Consistency with Local Needs: Designing for a multi-country, multi-market environment requires a nuanced approach to balance standardized user experiences with localized adaptations.

• Influencing Without Authority: Effectively driving product and business decisions through data-backed design insights when not in a formal leadership position.

• High-Volume Impact Measurement: Quantifying the precise impact of design changes on key business metrics in a complex, high-traffic eCommerce environment.

• Keeping Pace with Technology and Trends: Staying current with evolving design tools, methodologies, and user expectations in the fast-paced digital product landscape.

Learning & Development Opportunities:

• Advanced Design System Contribution: Opportunity to shape and evolve an international Design System, a highly valuable skill.

• Data Science & Analytics Exposure: Deepen understanding of how design impacts complex data models and business analytics.

• International Product Strategy: Gain exposure to global product strategy and market-specific user behavior analysis.

• Mentorship: Potential to mentor junior designers and contribute to the growth of the design function.

📝 Enhancement Note: The challenges are framed around operational complexities and strategic influence, common in senior operations roles. Growth opportunities focus on skill enhancement and strategic development within the product and design domain.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you significantly improved conversion rates on an eCommerce platform through design. What was your process, what data did you use, and what were the measurable results?" (Focus on process, data, and ROI)

• "How do you approach balancing the needs of multiple international markets with the need for a consistent global design system?" (Focus on nuance, strategy, and compromise)

• "Walk us through a complex product design challenge you faced. How did you influence stakeholders and overcome technical constraints to deliver a successful outcome?" (Focus on influence, problem-solving, and stakeholder management) Company & Culture Questions:

• "Based on your research, what do you see as the biggest UX/UI opportunities for a company like Demo Datos in the international eCommerce space?" (Demonstrate research and strategic thinking)

• "How would you contribute to our international Design System? What are your principles for creating scalable and maintainable design components?" (Assess understanding of systems and contribution)

• "Describe a situation where you had to challenge a business decision with design insights. How did you present your case, and what was the outcome?" (Assess influence and data-driven advocacy) Portfolio Presentation Strategy:

• Structure Your Narrative: For each case study, clearly define the problem, your role and contribution, your design process (ideation, iteration, testing), and the quantitative results achieved.

• Highlight Metrics: Ensure that the impact of your work is quantified with specific numbers (e.g., "+15% conversion rate," "Reduced drop-off by 10%," "Increased feature adoption by 20%").

• Showcase Figma Mastery: Be prepared to walk through key screens, user flows, or prototypes in Figma to demonstrate your technical proficiency and thought process.

• Emphasize Data and Experimentation: Explain how analytics and A/B testing informed your decisions and how you measured success.

• Connect to Business Goals: Articulate how your design solutions directly contributed to the company's business objectives.

📝 Enhancement Note: The interview preparation advice is tailored to assess not just design skills but also strategic thinking, data-driven decision-making, and the ability to influence, which are crucial for senior operations roles.

📌 Application Steps

To apply for this Senior Product Designer – UX/UI position:

• Submit your application through the provided link on Pasiona Jobs.

• Curate Your Portfolio: Select 2-3 of your most impactful projects, specifically highlighting your experience in eCommerce, international markets, and measurable results. Ensure your Figma work and data-driven decision-making processes are evident.

• Tailor Your Resume: Emphasize your 8-10+ years of experience, specific skills in UX/UI, Figma, Design Systems, analytics, and CRO. Quantify achievements wherever possible.

• Prepare Your Case Study Presentation: Rehearse presenting your chosen portfolio projects, focusing on clear articulation of the problem, your process, your unique contributions, and the data-backed outcomes. Practice explaining your design rationale and how it ties to business objectives.

• Research Demo Datos: Understand their business model, their position in the market, and any publicly available information about their digital products or services. Consider potential UX challenges and opportunities for a company like theirs.

⚠️ 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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