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Efemena Udezi

Résumé

Efemena Udezi

Product & Interaction Designer

UX/Product Designer creating emotionally intelligent digital experiences through research, storytelling and interaction design.

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Experience

  1. Sole UI/UX Designer

    Oct 2023 to Aug 2025

    IoT Venture GmbH · Darmstadt, Germany

    • As the company's only designer, owned all UX and UI across the product.
    • Led the 3.0 redesign, running user research and turning insights into design decisions that kept the product compatible with the “It's My Bike” app and white-label partners' apps. Increased user retention by 20%.
    • Ran usability tests through an iOS beta ahead of full release, iterating on feedback to fix issues including menu reordering and simpler report generation before rollout.
    • Built and maintained design systems that kept brand coherence across platforms. Consistent colour, typography and components.
    • Partnered with cross-functional teams to align design with business objectives.

  2. UI/UX Designer

    Jun 2025 to Aug 2025

    Merlinmines · Remote, US

    • Sole designer on the team: owned end-to-end UX and UI for an internal workflow web app used by the company's in-house software engineers.
    • Translated engineers' daily workflows into a clear, streamlined interface. From information architecture and user flows through wireframes and high-fidelity UI.
    • Established the product's core UI patterns and components as its first dedicated design resource.

  3. Product Designer

    Jun 2022 to Dec 2022

    Zalando SE · Berlin, Germany

    • Led the design process from research and concept through service blueprinting and pilot launch, shipping several features for Zalando Plus.
    • Created a comprehensive design blueprint for the Zalando Plus team to ensure cohesive, consistent design across the platform.
    • Revamped outdated UI/UX templates with developers, PMs and stakeholders. 15% increase in user engagement.
    • Contributed to design rituals, workshops and critiques, and to the design system.

  4. UI/UX Designer

    Dec 2021 to May 2022

    World Simplified UG · Germany

    • Led the design and architecture for converting web templates into iOS and Android mobile templates. Seamless cross-device experience and a 25% increase in app downloads.
    • Designed UX and UI for the company website and mobile app with a consistent system across touchpoints. 15% increase in website conversion.
    • Handed off CSS starter templates to frontend developers via Figma. Cut design-to-production timelines by 30%.
    • Built user journeys from personas to sharpen the experience. 25% increase in user engagement.

Education

  1. M.A., Interaction Design

    In progress to Expected Dec 2026

    University of North Texas: Denton, TX

    Capstone: emotional continuity for military families during deployment. The research is ongoing; nothing from it is presented on this site as a validated outcome.

  2. B.Sc., International Business

    Feb 2021 to Feb 2024

    OTH Amberg-Weiden: Germany

Certifications

  • Certified UX DesignerCareerFoundry · 2021
  • UI Design for UX DesignersCareerFoundry · 2021

Capabilities

Design & research

  • Information architecture
  • User research
  • Journey mapping
  • Wireframing and prototyping
  • Usability testing
  • A/B testing
  • Heuristic evaluation

Systems & craft

  • Design systems and component libraries
  • Responsive and mobile-first design
  • Interaction and motion specification
  • Accessible design to WCAG 2.2 AA
  • Developer handoff

Languages

  • English, fluent
  • German, intermediate

Tools

  • Figma
  • FigJam
  • Adobe Creative Cloud
  • Balsamiq
  • Canva
  • Lyssna
  • Optimal Workshop
  • Google Forms
  • Miro
  • Mural
  • Smaply
  • Lucidchart
  • Pen and paper
  • Notion
  • Jira
  • Confluence
  • Asana
  • Microsoft Teams

Get in touch

If any of this is close to what you are working on, I would like to hear about it.

Start a conversationudezimena@gmail.com