Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: haddock

Location: Barcelona, Catalonia, Spain

Job Type: FULL_TIME

Category: Product Design / UX/UI

Date Posted: 2026-07-22T15:35:39

Experience Level: 5-10 years

Remote Status: Hybrid

🚀 Role Summary

• Lead the end-to-end product design process, from initial discovery and research through to shipped features and post-launch iteration, driving significant impact on user experience and business outcomes.

• Develop and own the company's design system from scratch, establishing and maintaining brand consistency, design standards, and reusable components across all product interfaces.

• Design intuitive and engaging user interfaces and workflows for both core system-of-record functionalities and advanced AI Agents, ensuring trustworthiness and ease of use for non-technical users.

• Champion a data-driven design approach, tracking user interactions, analyzing usage patterns, and extracting actionable insights to inform and drive continuous product improvement and iteration cycles.

📝 Enhancement Note: This role is positioned as a foundational leadership opportunity for design within a growing startup. The emphasis on "rebuilding the design function," "owning the end-to-end process," and "building haddock's design system... from scratch" indicates a high degree of autonomy and strategic influence. The "Senior" title, coupled with 5+ years of experience and a focus on outcomes over just mockups, points to a strategic, hands-on role with significant ownership. The explicit mention of AI Agents like "Fina" and the company's background in AI workflows suggests a strong focus on AI-driven product design.

📈 Primary Responsibilities

• Own the complete design lifecycle for new features and product enhancements, including user research, concept generation, wireframing, prototyping, user testing, and final implementation oversight.

• Develop, document, and maintain a comprehensive design system, ensuring its adoption and effective use across product teams to promote consistency, efficiency, and scalability.

• Conduct user interviews, usability testing, and gather customer feedback to deeply understand user needs, pain points, and validate design solutions.

• Translate complex business problems and ambiguous requirements into clear, elegant, and user-friendly design solutions, particularly for AI-powered conversational interfaces and data visualization.

• Collaborate closely with engineering teams throughout the development process, providing design specifications, asset handoffs, and ensuring the quality and integrity of the final product implementation.

• Define and track key design metrics, analyzing user behavior data to identify opportunities for optimization and inform future design iterations.

• Set and uphold high standards for design quality, brand representation, and user experience across the entire haddock product suite.

• Contribute to the continuous improvement of design processes, workflows, and tooling within the product team.

📝 Enhancement Note: The responsibilities emphasize a full-stack design ownership, from strategic discovery to tactical implementation support. The inclusion of "tracking usage, measuring interactions and extracting conclusions" highlights a data-informed approach crucial for operations and product success. Building a design system "from scratch" is a significant undertaking, requiring strategic planning and execution.

🎓 Skills & Qualifications

Education:

• Bachelor's or Master's degree in Design, Human-Computer Interaction (HCI), Computer Science, or a related field, or equivalent practical experience. Experience:

• A minimum of 5 years of progressive experience in product design, with a proven track record in scaling B2B SaaS companies.

• Demonstrated experience in end-to-end product design, encompassing discovery, user research, interaction design, prototyping, and validation, with a focus on delivering tangible business outcomes.

• Significant experience in building, scaling, or actively managing a comprehensive design system. Required Skills:

• Product Design: Expertise in the full product design lifecycle, from ideation to post-launch analysis.

• Design Systems: Strong command of design system principles, with practical experience in creation, implementation, and maintenance.

• AI Integration: Active, hands-on experience leveraging AI tools and methodologies within the design process, demonstrating judgment and productivity gains.

• User Research & Validation: Proficiency in conducting user interviews, usability testing, and qualitative/quantitative data analysis to inform design decisions.

• Interaction Design & Prototyping: Skilled in creating wireframes, interactive prototypes, and detailed user flows.

• B2B SaaS: Deep understanding of the nuances and user needs within B2B Software-as-a-Service environments.

• Agile & Lean Methodologies: Familiarity and experience working within Agile and Lean Startup frameworks, emphasizing iteration and speed.

• Communication: Fluent in both Spanish and English, with strong written and verbal communication skills for documentation and cross-functional collaboration.

Preferred Skills:

• Experience growing or leading a design function within an early-stage startup environment.

• Familiarity with front-end development concepts (e.g., components, states, HTML/CSS basics) to facilitate effective communication with engineers.

• Proven experience in independently running customer interviews and usability tests from end-to-end.

• Experience designing for AI-driven products that are already in production.

📝 Enhancement Note: The requirements emphasize a hands-on, autonomous designer who can lead and build. The distinction between a "screen decorator" and someone "responsible for outcomes" is critical. The explicit need for "active, hands-on use of AI" and "developed judgment (<em>criterio</em>)" for AI tools highlights a forward-thinking requirement. Bilingual fluency is noted as a practical necessity for the work environment.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• End-to-End Case Studies: Showcase at least 2-3 comprehensive case studies demonstrating your ownership of the entire design process, from problem definition and user research to solution design, prototyping, testing, and measuring impact.

• Design System Contribution: Include examples of your work on design systems, whether building one from scratch, significantly contributing to an existing one, or demonstrating how you've applied design system principles to ensure consistency.

• AI-Driven Design Examples: Highlight projects where you've actively integrated AI tools or designed for AI-powered features, explaining your approach, the challenges faced, and the outcomes achieved.

• Problem Framing & Solution Design: Clearly articulate the ambiguous problems you tackled and the strategic thinking behind your proposed solutions, demonstrating your ability to turn complex challenges into elegant user experiences.

• Metrics & Outcomes: Quantify the impact of your designs whenever possible, using metrics related to user engagement, conversion rates, efficiency gains, or other relevant KPIs.

Process Documentation:

• Workflow Design: Demonstrate your ability to map out complex user journeys and design streamlined, intuitive workflows.

• Iterative Design Approach: Provide evidence of how you've used feedback and data to iterate on designs, showing the evolution of solutions.

• Cross-functional Collaboration: Illustrate how you've worked effectively with engineers, product managers, and other stakeholders to bring designs to life.

📝 Enhancement Note: The portfolio is expected to be a testament to strategic thinking and hands-on execution, not just visual polish. Candidates must demonstrate a full understanding of the design process, with a particular emphasis on AI integration and the ability to measure and articulate the impact of their work. The "from scratch" nature of the design system build means this will be a key focus.

💵 Compensation & Benefits

Salary Range: €40,000 - €60,000 gross per year.

Benefits:

• Competitive Salary: A salary that is competitive and designed to grow with the company and your contributions.

• Hybrid Work Environment: Flexibility to work 2 days per week in the modern Barcelona office and 3 days remotely, fostering work-life balance and team collaboration.

• AI Tooling Access: Full access to a wide range of AI tools to experiment with and integrate into your workflow, promoting innovation.

• Urban Sports Club Membership: A subsidized membership offering access to various fitness and wellness activities like yoga, HIIT, and hot studios.

• Salary Flexibility Benefits: Access to salary flexibility benefits through Playflow, allowing for personalized compensation adjustments.

• Office Perks: Enjoy a bright, modern office in Poblenou, Barcelona, including rooftop access for team events and collaborative sessions.

Working Hours: Based on a standard 40-hour work week, with hybrid flexibility.

📝 Enhancement Note: The salary range is provided as €40-60k gross annually. This is a solid range for a Senior Product Designer in Barcelona, reflecting 5+ years of experience and the hybrid work model. The benefits package emphasizes work-life balance, continuous learning through AI tooling, and employee well-being.

🎯 Team & Company Context

🏢 Company Culture

Industry: AI-Powered Restaurant Back-Office Software (SaaS)

Company Size: Startup, growing rapidly with Y Combinator backing.

Founded: (Implied to be relatively recent, as they are a startup focused on rebuilding design functions and building a design system from scratch.)

Team Structure:

• The design team is being rebuilt, with this Senior Product Designer positioned to lead its development.

• Designers work in small, mission-oriented squads, typically comprising 1-3 individuals.

• Close collaboration exists with product management and engineering teams. Methodology:

• Strong adherence to Lean Startup and Agile principles, prioritizing action, iteration, face-to-face communication, and a fast-paced environment.

• Emphasis on continuous improvement of processes and tools, with all team members contributing to enhancements.

• Data-driven decision-making, utilizing user interaction data and feedback for iteration.

Company Website: https://www.haddock.app/

📝 Enhancement Note: haddock operates in the competitive restaurant tech space, leveraging AI to provide a comprehensive back-office solution. The company culture is deeply rooted in startup principles: agility, iteration, and ownership. The rebuilding of the design function suggests an exciting opportunity to influence and shape the design team's direction and processes.

📈 Career & Growth Analysis

Operations Career Level: Senior Individual Contributor with potential for leadership. This role is positioned as the foundational leader of the design function, implying a path toward Design Lead or Head of Design as the team scales.

Reporting Structure: Reports to the Head of Product (Ingrid), with direct interaction and collaboration with the Product team and Co-founder (Pol).

Operations Impact: The Senior Product Designer will have a direct and significant impact on the product's usability, adoption, and overall success. By owning the end-to-end design process and building the design system, they will influence the core user experience, drive customer satisfaction, and contribute to the company's growth and market position. The focus on AI-driven solutions means their work will be at the forefront of the company's innovation.

Growth Opportunities:

• Design Leadership: As the design function grows, there's a clear opportunity to move into a formal leadership role, managing and mentoring other designers.

• Strategic Influence: Shape the future of product design at haddock, defining its methodologies, tools, and culture.

• AI Design Specialization: Deepen expertise in designing AI-driven products and conversational interfaces within a production environment.

• Startup Growth Experience: Gain invaluable experience in scaling a tech company, contributing to product-market fit and rapid growth phases.

• Cross-functional Expertise: Develop a strong understanding of product management and engineering, enhancing overall product development acumen.

📝 Enhancement Note: The role offers a unique blend of hands-on design execution and strategic leadership potential. The "rebuilding the design function" aspect means the individual will be instrumental in defining the design team's trajectory and culture, offering significant growth opportunities beyond a typical senior IC role.

🌐 Work Environment

Office Type: Modern, collaborative office space located in Poblenou, Barcelona. Features include rooftop access for team events.

Office Location(s): Avinguda Diagonal, 123, Barcelona, Spain.

Workspace Context:

• Hybrid Model: Combines 2 days of in-office collaboration with 3 days of remote work, allowing for focused individual work and team synergy.

• Collaborative Atmosphere: The office environment is designed to foster trust, alignment, and creativity, with team events and shared spaces.

• Technology Enabled: Access to a wide range of AI tooling and modern design software is expected.

• Startup Energy: Fast-paced and dynamic, typical of a growing startup environment.

Work Schedule: Standard working hours with hybrid flexibility, allowing for efficient process management and data analysis while accommodating personal needs.

📝 Enhancement Note: The hybrid model is a key feature, balancing the benefits of in-person collaboration for ideation and team building with the flexibility of remote work. The office location in Poblenou is a desirable area in Barcelona.

📄 Application & Portfolio Review Process

Interview Process:

• Intro Call (25 mins): Initial screening with Ingrid, Head of Product, to assess cultural fit, initial alignment with the role, and answer immediate questions.

• Portfolio Review & Design Deep-Dive (45-60 mins): A thorough review of your portfolio with the Product team, focusing on your design process, problem-solving skills, and ability to articulate design decisions. Be prepared to discuss your case studies in detail.

• Design Challenge/Take-Home Exercise: A practical assessment of your design skills, problem-solving abilities, and approach to a relevant design problem. This will be followed by a walkthrough session where you present and defend your solution.

• Final Call (25 mins): A concluding conversation with Pol, Co-founder, likely focusing on strategic alignment, company vision, and cultural fit.

Portfolio Review Tips:

• Storytelling: Structure your case studies as compelling narratives, clearly outlining the problem, your role, your process, the challenges you faced, your solutions, and the measurable impact.

• Process Emphasis: Detail your design methodology, including research techniques, ideation processes, prototyping tools, and validation methods used.

• AI Integration Focus: Explicitly call out how you've used AI in your design process and for AI-driven products. Explain your rationale and demonstrate concrete benefits.

• Design System Expertise: Clearly present your experience with design systems, showcasing your understanding of scalability, consistency, and component-based design.

• Quantify Impact: Whenever possible, use data and metrics to demonstrate the success of your designs. Even for early-stage concepts, discuss potential KPIs.

• Personalization: Tailor your portfolio presentation to highlight the skills and experiences most relevant to haddock's needs, especially regarding AI and building from scratch.

Challenge Preparation:

• Understand the Context: Thoroughly research haddock, its product, target audience (restaurants), and its use of AI.

• Focus on Outcomes: Approach the challenge with the mindset of delivering a solution that meets specific business and user objectives, not just a visually appealing design.

• Demonstrate Process: Be ready to explain your thought process, decision-making, and trade-offs during the challenge walkthrough.

• AI & System Thinking: Consider how AI could be integrated into your solution and how it might fit within a broader design system.

• Conciseness: For timed exercises, prioritize core functionality and key user flows.

📝 Enhancement Note: The interview process is designed to be efficient and thorough, moving from initial screening to a practical design challenge. Candidates should be prepared to demonstrate not only their design skills but also their strategic thinking, problem-solving capabilities, and ability to work autonomously in a startup environment, with a strong emphasis on AI and design systems.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma (highly probable, as it's industry standard for collaborative design and design system management), Sketch, Adobe Creative Suite (Illustrator, Photoshop).

• Collaboration & Communication: Slack, Google Workspace (Docs, Sheets, Slides), Notion (or similar for documentation).

• Project Management: Jira, Asana, Trello (or similar for task tracking within squads).

Analytics & Reporting:

• Product Analytics: Mixpanel, Amplitude, Google Analytics (or similar for tracking user interactions and product usage).

• Data Visualization: Tableau, Looker, Power BI (or built-in dashboarding tools within analytics platforms) for analyzing and presenting user data.

CRM & Automation:

• While not directly a designer's tool, familiarity with how CRM systems (e.g., HubSpot, Salesforce) and marketing automation platforms function can be beneficial for understanding B2B SaaS user journeys.

• AI Tooling: A broad range of AI tools for design ideation, content generation, image creation, and workflow automation will be available and encouraged for experimentation.

📝 Enhancement Note: The emphasis on AI tooling suggests that proficiency and curiosity with emerging AI technologies for design are paramount. Figma is the de facto standard for collaborative design and design systems, making it a strong assumption for their primary design tool. Familiarity with product analytics tools is crucial for the data-driven iteration aspect of the role.

👥 Team Culture & Values

Operations Values:

• Ownership & Autonomy: Taking full responsibility for work, driving initiatives forward independently, and embracing challenges as opportunities.

• Iteration & Action: Prioritizing doing and learning over perfect planning, embracing rapid iteration cycles, and valuing speed and progress.

• Customer Focus: Deeply understanding and empathizing with customer needs, using feedback to drive product improvements, and delivering tangible value to restaurateurs.

• Excellence & Ambition: Striving for high quality in all aspects of work, from design execution to process improvement, with a drive to make a significant impact.

• Collaboration & Communication: Open, honest, and face-to-face communication, working effectively within small squads and across functions.

• AI Forward: Embracing and actively integrating AI into workflows and product development.

Collaboration Style:

• Small Squads: Working closely within small, mission-oriented teams (1-3 people) for efficient collaboration and rapid decision-making.

• Cross-functional Integration: Seamless collaboration with engineers and product managers throughout the entire product development lifecycle.

• Open Feedback: A culture that encourages constructive feedback and continuous improvement of processes and designs.

• Knowledge Sharing: Actively contributing to the improvement of design processes and tooling, sharing best practices.

📝 Enhancement Note: The core values revolve around a proactive, ownership-driven, and iterative approach, characteristic of successful startups. The emphasis on AI integration and customer-centricity are key cultural drivers for haddock.

⚡ Challenges & Growth Opportunities

Challenges:

• Building from Scratch: Establishing a design system and rebuilding the design function from the ground up requires significant strategic planning, execution, and influence.

• AI Integration Complexity: Designing effective and trustworthy AI-driven experiences for a non-technical user base presents unique UX challenges.

• Balancing Speed and Quality: Operating in a fast-paced startup environment requires effectively balancing rapid iteration with maintaining high design quality and system integrity.

• Ambiguous Problem Spaces: Tackling ill-defined problems and translating them into clear, actionable design solutions.

• Cross-functional Alignment: Ensuring consistent understanding and buy-in for design decisions across product, engineering, and leadership.

Learning & Development Opportunities:

• AI Design Specialization: Deep dive into the practical application of AI in product design and user experience.

• Design System Architecture: Gain hands-on experience in architecting and scaling a design system for a growing SaaS product.

• Startup Leadership: Develop leadership skills by shaping the design function and potentially mentoring future team members.

• Product Strategy: Contribute to high-level product strategy through design-led discovery and innovation.

• Industry Transformation: Be at the forefront of transforming the restaurant industry with AI-powered technology.

📝 Enhancement Note: The primary challenge lies in establishing foundational design practices and systems within a growing startup, coupled with the innovative aspect of designing for AI. This presents significant opportunities for individuals seeking to make a substantial impact and grow their expertise in cutting-edge areas.

💡 Interview Preparation

Strategy Questions:

• "How would you approach building a design system from scratch for a B2B SaaS product like ours, considering our AI focus and startup environment?" (Focus on methodology, phased rollout, collaboration, and adoption strategies.)

• "Describe a time you turned an ambiguous problem into a clear, user-centered design solution. What was your process, and what was the outcome?" (Highlight your problem-framing, research, and solution articulation skills.)

• "How do you integrate AI tools into your design process to enhance efficiency and quality? Can you provide a specific example?" (Demonstrate hands-on experience, critical judgment, and tangible benefits.)

• "What metrics would you track to measure the success of a new AI Agent feature, and how would you use that data to iterate on the design?" (Showcase your data-driven approach and understanding of product KPIs.) Company & Culture Questions:

• "What excites you most about haddock's mission and our approach to AI in the restaurant industry?" (Show your research and genuine interest.)

• "How do you contribute to a fast-paced, iterative, and ownership-driven startup culture?" (Align your work style with their values.)

• "Describe your experience working in small, mission-oriented product squads." (Illustrate your collaborative approach in agile teams.) Portfolio Presentation Strategy:

• Lead with Impact: Begin each case study by clearly stating the problem and the measurable impact your design achieved.

• Show, Don't Just Tell: Use visuals (wireframes, mockups, prototypes, user flows) to illustrate your process and solutions.

• Articulate Decisions: Be prepared to explain why you made certain design choices, referencing research, user needs, or business goals.

• Highlight AI & System Thinking: Explicitly discuss your use of AI tools and how your designs fit into or contribute to a design system.

• Be Ready for Deep Dives: Expect detailed questions about your contribution, challenges, and trade-offs.

• Engage with the Product Team: Treat this as a collaborative discussion, asking clarifying questions and showing your enthusiasm for their product.

📝 Enhancement Note: Interview preparation should focus on demonstrating strategic thinking, hands-on execution, and a strong understanding of haddock's specific context (AI, B2B SaaS, startup culture). Candidates should be ready to defend their design decisions with data and a clear process.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided link on jobs.haddock.app.

• Tailor Your Resume: Highlight your experience with B2B SaaS, end-to-end product design, design systems, and AI integration. Quantify achievements wherever possible.

• Curate Your Portfolio: Select 2-3 strong case studies that best showcase your ability to own the design process, build systems, and work with AI. Ensure they clearly articulate the problem, your role, process, solutions, and impact.

• Personalize Your Application: Include a personalized message or cover letter addressing why you're excited about haddock, this specific role, and how your skills align with their needs, particularly regarding building from scratch and AI.

• Prepare for the Process: Familiarize yourself with haddock's product, target market, and their AI initiatives. Practice articulating your design process and decisions, especially for the portfolio review and design challenge.

⚠️ 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.