Portrait of Stefanie Kruse
Hello, I am Stefanie!

Future-proof your digital products

As a Sustainable UX Designer, I’ll help you build sustainable apps and websites with impact—for people, planet, and profit.

Portrait of Stefanie Kruse

I have worked for OTTO, MOIA, LichtBlick, Nitrobox, DayOff, and Plan International.

How Sustainable UX can help your business

Larger Market Reach

With an accessible and inclusive product you’ll not only meet accessibility laws, but also extend you market reach and increase revenues.

Superior Performance

Following sustainable web design principles can improve usability, loading times, and SEO — so that your users don’t give up in frustration.

More Business Impact

Work sustainably and save money by validating your ideas up-front and building only those features that make an impact on your goals.

Customer Voices


Plan International iPhone and desktop mockups and logo

Plan International: Improving checkout conversion

In order to improve checkout conversion and reduce abandonment rates, I reviewed the existing flow and proposed a redesign that reduced friction for donors.

Thyropal: A companion app for thyroid patients

I validated a concept and an MVP for the app with Lean UX Research and Rapid Prototyping methods, resulting in an interactive Figma prototype, a design system, and a roadmap for implementation.

ThyroPal iPhone mockup and logo
A mockup of the EWS homepage redesign that received a grade A for reduced carbon emissions.

Reducing website CO2 emissions by 92%

I redesigned the homepage for EWS, a German green energy provider. I improved support for the primary user’s journey, made the page accessible and reduced the CO2 footprint of the page.


One Trick Pony

Passion for sustainable UX design paired with 10+ years experience in technology and product management.


UX/UI Design

Inclusive and sustainable apps, websites and software for your impact organization—for every budget:

  • UX / UI Reviews
  • UX Relaunch
  • Sustainable Product Design

Rapid Prototyping

Validate a product or feature idea with customers at speed.
I can support you with:

  • Design Sprints
  • Interactive Prototypes
  • User & Usability Testing

Lean UX Research

Understand needs and pain points of your customers. Develop solutions that meet business goals. I’ll help you with:

  • Inclusive User Personas
  • Sustainable User Journeys
  • User Interviews, Surveys, etc.

About me

I am a Hamburg-based product designer with 10+ years of experience in tech and a passion for product discovery, user research, and UX design.

With my experience in product management, knowledge in computer science, business strategy, and business models, I bring a unique and holistic perspective to my work and your team.

Stefanie and another person in an animated discussion over Stefanie's laptop at a desk.

On stage

Stefanie giving a talk on stage.

Book me as a speaker

As a professional speaker, I love to raise awareness about sustainability issues in tech and inspire others to build more meaningful and sustainable products. You can book me for your conference or company events.

Discover my talks
Let’s Have some Impact!

How can I support you?

I’m always excited to hear from people passionate about creating responsible products with impact.

Whether you’re looking for a UX designer or a speaker for your event — feel free to reach out via e-mail or LinkedIn or simply pick a spot on my calendar to chat:

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Looking forward to hearing from you!

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