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Malt Strategy
Marina MintzMM

Marina Mintz

UX/UI Product Designer

€300/day
Barcelona, ES
3-7 years
Figma
User Research
User Experience Design
User Testing
Wireframing

Average response time: A few days

About Marina

Hi! I’m Marina. I’m a Product Designer with 5 years of experience helping startups and B2B SaaS companies evolve. I specialize in scaling and optimizing products—using deep user research and usability testing to turn complex pain points into intuitive, high-performing interfaces. I love working at the intersection of AI and UX, building scalable design systems and making sure technical tools feel human and easy to use. Let’s build something great together!
Healthcare Providers
Social Networks
Software Publishing

  • Portuguese

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

  • Italian

    Basic

Can work on-site
Barcelona (up to 10km)

Experience

  • Nichoos
    Product Designer
    SOCIAL NETWORKS
    July 2025 - April 2026 (9 months)
    • Redesigned 20+ core admin panel pages, improving task completion flow and reducing support-related friction across
    the platform.
    • Built a Design System from scratch, unifying 10+ complex product functionalities and cutting design-to-dev handoff
    time while ensuring visual consistency at scale.
    • Partnered directly with the CEO to translate business objectives into developer-ready, high-fidelity product designs,
    aligning roadmap priorities with user needs.
    • Conducted design QA across releases to maintain pixel-perfect implementation standards.
    Figma User Experience Design QA testing Start-up artificial intelligence
  • Freelancer
    UX/UI Designer
    February 2024 - Today (2 years and 5 months)
    • Redesigned a call-centre platform using naturalistic observation, surfacing workflow mismatches and shipping an in-
    app notepad and feature reordering that aligned the product with real agent behaviour.
    • Designed 5+ modular e-commerce product page template systems with multiple variations, enabling inventory-scale
    flexibility while maintaining UX consistency.
    • Conducted UX research and stakeholder interviews across healthcare and SaaS verticals, identifying pain points and
    defining design opportunities from discovery through to prototype.
    • Delivered high-fidelity wireframes and interactive prototypes in Figma; partnered with engineering teams for pixel-
    perfect implementation.
    User Research Figma artificial intelligence User Experience Design
  • Sling Hub
    Product Designer
    September 2024 - February 2025 (5 months)
    • • Spearheaded the "Open Innovation Challenges" feature, leveraging Google Analytics to identify signup friction and achieving an 8.4 NPS in the first trimester..
    • • Engineered new data visualization charts and startup metrics based on direct user requests to enhance investor decision-making.
    • • Reorganized and managed the company's Design System to ensure scalability and visual consistency across web and mobile platforms.
    • • Collaborated with cross-functional squads and C-level executives to align product design strategy with regional business growth goals.
Check out Marina's experience

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Education

  • Master's in User Experience Design
    Universidad de Barcelona
    2026
    Master's in User Experience Design
  • Professional Diploma in UX Design
    UX Design Institute
    2024
    Professional Diploma in UX Design
Check out Marina's education

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