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Merlin Digital Partner

Senior UX/UI Designer

Merlin Digital Partner

. Lead product discovery phases, mapping problem spaces and user journeys .

Posted 11/2/2026full-timeBarcelona • SpainSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in leading product discovery, user research, and design strategy to create intuitive digital products. Proficient in building and maintaining design systems while collaborating effectively with cross-functional teams in fast-paced environments.

Highest-signal resume keywords
Product-Centric MindsetExpert Knowledge of FigmaUser Testing and Data-Driven FeedbackCollaboration in Agile EnvironmentsDesign System Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
User ResearchInformation ArchitectureWireframingPrototypingUX Metrics DefinitionVisual DesignAccessibility StandardsUser Flow DesignInteraction DesignData Analytics
Soft Skills
Effective CommunicationStakeholder PresentationCollaborationProblem SolvingAdaptability
Tools & Technologies
FigmaMixpanelHotjarAmplitudeGoogle AnalyticsHTMLCSSReactTailwindDesign Systems
Industry Keywords
HealthTechMedTechSportsTechIoT ProductsConnected DevicesWearable TechDigital Product LifecycleUser-Centric MethodologiesAgile MethodologiesComplex Telemetry

Tech Stack

Tools & technologies
IoTReact

About the role

Key responsibilities & impact
  • Lead product discovery phases, mapping problem spaces and user journeys
  • Align design decisions with core product metrics and business objectives
  • Conduct qualitative and quantitative user research, including interviews, usability testing, and data analytics
  • Design user flows, information architectures, wireframes, and pixel-perfect high-fidelity web and mobile interfaces
  • Build and test interactive prototypes to validate concepts, iterate rapidly, and solve complex UX problems before development
  • Own, maintain, and scale the multi-platform Design System, including component libraries, design tokens, interaction standards, and documentation
  • Ensure visual consistency, accessibility, and UI excellence across digital touchpoints
  • Partner daily with Frontend and Software Engineers to evaluate technical feasibility and ensure high-quality design hand-offs
  • Define UX success metrics with Product Managers to measure post-launch adoption, friction points, and feature performance
  • Own the user experience across the digital product lifecycle
  • Transform complex health data, hardware interactions, and business strategy into clear, intuitive, and functional digital products
  • Align product vision with user needs and define design strategy
  • Collaborate with Product Managers, Engineering, Data, and Hardware teams using user-centric methodologies

Requirements

What you’ll need
  • 5+ years of professional experience as a Product Designer, UX/UI Designer, or interaction designer working on end-to-end digital products (Web & Mobile Apps)
  • 100% Product-Centric Mindset: Deep understanding of how design directly drives product growth, retention, user engagement, and business goals
  • Expert knowledge of Figma, including Auto-Layout, Design Tokens, Component Libraries, Variables, and Advanced Interactive Prototyping
  • Demonstrated experience creating, scaling, and maintaining production-ready design systems
  • Hands-on experience planning, executing, and synthesizing user testing and data-driven feedback loops
  • Proven ability to collaborate effectively with Product Managers and Developers in fast-paced, Agile environments
  • Ability to articulate, defend, and present design rationales clearly to key stakeholders
  • Professional English level
  • Ability to work on-site at the Barcelona office 3 days a week
  • Previous experience designing interfaces for IoT products, connected devices, wearable tech, or physical-digital service ecosystems is a plus
  • Previous experience in HealthTech, MedTech, or SportsTech environments handling complex telemetry and health data visualizations is a plus
  • Basic understanding of HTML/CSS, React, and Tailwind is a plus
  • Experience with Mixpanel, Hotjar, Amplitude, or Google Analytics is a plus
  • Experience in high-growth startups or tech scale-ups is a plus

Benefits

Comp & perks
  • Join a fast-growing HealthTech company building a new generation of intelligent, connected health technologies
  • Work at the intersection of embedded systems, hardware, IoT, cloud, AI, and digital health
  • Build technologies powering products already used by leading sports organizations and enterprise customers worldwide
  • Take ownership of high-impact product design initiatives, from concept and discovery through to final production
  • Collaborate with a talented multidisciplinary team across Hardware, Backend, AI, Data, and Product
  • Have a visible impact on product roadmap and design direction as the platform continues to scale internationally
  • Work in a fast-paced environment with a high level of autonomy and ownership
  • Competitive compensation based on experience
  • Hybrid work model