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Stefan DierdorfSD

Stefan Dierdorf

Sr. Product/Service Designer (UX/UI Figma) MSc HCI

£680/day
Berlin, DE
15+ years

Average response time: 1 hour

About Stefan

Willing to work from anywhere, I am location-independent.

I’m a seasoned Product & UX Designer with over a decade of experience leading design initiatives for complex digital products, particularly in the automotive, SaaS, and mobility sectors. With a background in both design (Human-Computer Interaction/Interaction Design) and computer science, I’m comfortable operating across strategy, UX/UI, and technical implementation—and bridging the gaps between them.

Over the years, I’ve worked with clients ranging from global corporations to fast-moving startups, often stepping into roles that require both hands-on execution and strategic oversight. My work has included end-to-end app and web platform design, design system architecture, and process modernisation. I’ve also led interdisciplinary teams, pitched and won design concepts for international OEMs, and advised on scaling design operations.

I’m not married to tools—I’ve used many and learn new ones quickly. I thrive in remote, cross-functional teams and enjoy figuring out the messy bits of complex systems.

Let’s talk if you’re looking for someone who can connect the dots between user needs, business goals, and technical feasibility—without the fluff.

Portfolio LinkedIn
  • German

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Berlin (up to 50km), Hamburg (up to 50km), Cologne (up to 50km), Frankfurt am Main (up to 50km), Munich (up to 50km)

Experience

  • Sennheiser
    UI Designer
    TECH
    January 2024 - February 2025 (1 year and 2 months)
    Hamburg, Germany
    Designed the user interface for a cloud-first application managing streaming devices. Built and maintained a comprehensive design system, ensuring scalability and consistency. Worked closely with development to implement a seamless Design-to-Code pipeline, improving efficiency and accelerating delivery.
    User Interface Design Design systems DesignOps User Experience Design Prototype
  • DFL Digital Sports GmbH
    freelance DesignOps/Creative Technologist.
    PRESS AND MEDIA
    September 2023 - December 2023 (4 months)
    Cologne, Germany
    Automated repetitive design tasks to reduce manual effort and increase speed. Migrated and optimised workflows from Adobe CC to Figma, improving collaboration, asset management and prototyping. Introduced scalable DesignOps processes and tools to boost consistency and long-term creative efficiency.
    Figma Creative technology Design systems
  • icon incar
    Interaction Designer
    AUTOMOBILE
    July 2023 - September 2023 (3 months)
    Tokyo, Chiyoda, Japan
    Pitch objective: create two distinct infotainment/HMI interaction concepts for a major Japanese automotive OEM (name confidential). Implement concepts as interactive prototypes and make them run on OEM's prototype vehicles. Ideation, conceptualisation, wireframing, prototyping, art direction, presentation. Pitch won.
    User Interface Design Prototype Creative technology User Experience Design Storytelling

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Education

  • PhD candidate
    2013
    PhD candidate
  • Master of Science
    2011
    Master of Science

Skill set

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