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Sthefanne BatistaSB

Sthefanne Batista

Product Designer (UX/UI)

€300/day
Porto, PT
3-7 years

Average response time: 1 hour

About Sthefanne

I help teams turn complex systems into clear, intuitive, and human-centered digital experiences.

As a Product Designer (UX/UI), I worked across healthcare, government, fintech, e-commerce, and international development, designing end-to-end products driven by user needs and real-world impact. My work spans discovery, user research, UX strategy, wireframes, prototyping, UI design, and delivery.

I’ve designed products in very different environments — from fast-paced to global initiatives with international organizations and public sector programs. This range helps me adapt quickly while keeping structure, clarity, and consistency across complex products.

I’m especially focused on UX/UI design, design systems, and cross-functional collaboration, working closely with product and engineering teams to align user needs with business goals.

At the core, I design to simplfy complexity and make digital systems more usable and accessible for the people who rely on them.
  • Portuguese

    Native or bilingual

  • English

    Fluent

Can work on-site
Porto (up to 50km)

Experience

  • UNICC
    Product Designer (UX/UI) | International Projects (Health, Government & Social Impact)
    CIVIC AND SOCIAL ORGANIZATIONS
    March 2024 - Today (2 years and 5 months)
    Valencia, Spain
    Experience delivering end-to-end UX/UI solutions across global digital products in healthcare, public sector, education, and data platforms. I collaborate with international organizations and cross-functional teams to design scalable, user-centered solutions that drive real-world impact.

    I lead the full design lifecycle — from discovery and research to prototyping and delivery — applying human-centered design and design thinking methodologies in agile environments.

    Selected Projects & Experience:
    • SMILE Platform (Ministry of Health Indonesia + UNDP): Designed features for a large-scale health platform managing vaccines, medicines, and medical waste across 12,000+ facilities, later expanded to Malawi
    • International Organization for Migration (IOM): Designed a digital handbook to support immigration processes and user guidance
    • AI Academy: Contributed to the design of an e-learning platform focused on Artificial Intelligence education
    • OPEC Fund for International Development: Designed a platform for filtering, analyzing, and accessing research on financial partner institutions
    • UN Geneva: Developed a platform to manage funding for institutional communication and graphic materials
    • UN Digital ID (Malawi): Contributed to digital identity solutions for public services
    • UNICEF: Designed a mobile app for pregnancy and child health tracking, including vaccination, check-ups, and growth monitoring

    Impact & Achievements:
    • Led UX/UI initiatives across multiple international, high-impact digital products
    • Built and maintained scalable design systems to ensure consistency across platforms
    • Facilitated workshops and stakeholder alignment across diverse cultural and operational contexts
    • Delivered data-driven and user-centered solutions in agile, cross-functional environments
    • Recognized for strong ownership, communication, and stakeholder management
    User Interface Design User Experience Design Design System User Research User Testing
  • Jumia
    UX/UI Designer
    E-COMMERCE
    April 2022 - March 2025 (2 years and 11 months)
    Porto, Portugal
    Responsible for the features: search, filters and product description page. Features where the experience needs to help the user to find the best product and convince to buy it.

    Main responsabilities:
    - Drive end-to-end design processes for new features and product enhancements, from conceptualization to implementation.
    - Collaborate closely with cross-functional teams, including product owners, engineers, and designers.
    - Create wireframes, prototypes, and high-fidelity designs to translate UI and design ideas effectively.
    - Express a problem-solving approach, combining UX principles with data-driven insights.
    - Develop and maintain a scalable design system ensuring consistent user experiences.
    - Stay abreast of industry trends, emerging technologies, and best practices, integrating this knowledge into the design process.
    - Advocate for human-centered design, fostering a culture of design thinking within the organisation.
    - Engage with stakeholders at various levels, presenting and justifying design decisions.
    - Lead the translation of customer insights into compelling design narratives.
    - Deliver incremental changes and product features that propel our products to new heights.
    - Actively participate in agile project teams, including sprints, retrospectives, and reviews.

    Main results:
    - Part of the team that started a user-centered culture in the company;
    - Consecutive positive feedback from the team;
    - More consistency and organization thanks to the design system and the workflow defined.
    User Experience Design User Interface Design Design Thinking Marketing Design System
  • Stone Co.
    UX/UI Designer
    BANKING AND INSURANCE
    May 2021 - July 2022 (1 year and 2 months)
    São Paulo, Brazil
    Responsible for the design system and for the success of the new features implementations in Equals, a company Stone Co.

    Main responsibilities:
    - Deliver high-quality work throughout the end-to-end product design workflow, from synthesising user research, to designing wireframes to prototypes to high-fidelity visual design
    - Help to mantain the design system
    - Plan, conduct, and synthesise user research to strengthen clarity and understanding, and enable meaningful solutions
    - Collaborate closely with front-end developers to ensure the smooth handoff, implementation and maintenance of designs and components
    - Define user interactions and experience through user flows, information architecture, mockups, and other relevant diagrams and maps
    - Build functional prototypes to validate and test your designs, and to engage team conversations
    - Effectively communicate the design decisions and the underlying rationale and process

    Main results:
    - More consistency for the app and web version, thanks to the design system updates;
    - Created a routine of workshops with busines, developers and costumer success teams;
    - Considerable drop in support calls due to the ux writing applied.
    User Experience Design Design System User Interface Design Design Thinking Figma

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