Gebr. Heinemann
Streamlining the webshop experience
By enhancing checkout and cart flows, refining the design system, and implementing WCAG AA standards, I created a more inclusive and scalable user journey.
As Senior Product Designer
I create digital experiences that
solve user problems
scale w/ design systems
get ready for AI codegen
available for projects
Digital product design
User experiences + interfaces that work.
Work experience
My roles and key projects.
Impact +
responsibilities
Ensuring accessibility in accordance with BITV 2.0
Based on an accessibility audit and our own screenings, we ensure that the webshop complies with WCAG “AA” standards. In addition, all input elements and forms are completely redefined in terms of contrast, clickability, and usability.
Enhancing checkout experience
As the central hub of the shopping experience, the cart serves as the funnel leading to the final purchase. Potential customers can find all key information about selected products here, along with various ways to explore additional recommendations. The optimized checkout allows both new and returning customers to complete their purchase. With a clear focus on modularity and scalability.
Design System
Reusable patterns, components, and rules form the foundation for future flows and features. This blueprint enables us to achieve global consistency across our system landscape.
Impact +
responsibilities
Cross-functional alignment & concept
In close collaboration with Product, Editorial, and Tech/Data, we align requirements, define goals, and translate them into clear concepts.
Research, UX optimisation & prototyping
Based on research, benchmarking, and continuous iteration, I optimise user journeys and information architecture. Wireframes and interactive Figma prototypes help validate assumptions early and reduce implementation risk.
Design system & accessibility
High-fidelity UI is built within the existing design system. With a strong focus on WCAG compliance, usability, and scalability. Clean specs and a structured dev handoff ensure quality through delivery and launch.
Impact +
responsibilities
Optimizing the contact with the Porsche dealer
Streamlines the process for customers to review financing options, register their vehicle for a trade in, and connect directly with the Porsche Center.
Offer and contract generation
Equips Porsche dealers with a user friendly platform to streamline the management, adjustment, creation of offers and contracts, and reporting of sales.
Global fee management
Simplifies the process for dealers to configure, customize, and display fees in vehicle listings for customers.
Impact +
responsibilities
Checkout system
Empowers customers to develop a unique and accurate estimate through well directed questions.
Global navigation
All touchpoints (desktop, tablet, mobile) now ensure that customers can find their way around.
Status responsive DTK Portal
After completing onboarding, customers will have the option to continuously check the status of their specific offer. They can also upload documents to further refine it.
Impact +
responsibilities
Real estate financing comparison
The customer is enabled to compare financing providers and banks and select the appropriate offer.
Real estate financing checkout
Once the customer selects their specific offer, they will be pointed towards additional relevant options and can request quotes from various providers at the same time.
Daily and Fixed Deposit Comparison
The customer is provided with an easy way to compare banks with respect to interest rates and security, enabling them to identify the right daily or fixed deposit deal.
Creation and Optimization of Typo3 Extensions
I empower the editors of Vergleich.de to generate and oversee different articles in the Typo3 backend with customized modules like tables, content lists, and templates.
Impact +
responsibilities
Art direction + creation
Guiding the overall look and feel of projects, ensuring every element aligns with the vision and communicates impact. Also transforming abstract ideas into realistic 3D visuals, enhancing storytelling with depth, detail, and perspective.
(Character) Animation
Breathing life into characters and scenes through fluid, expressive motion that engages and entertains.
Clients
Audi, Daimler, Allianz, Techniker Krankenkasse, tesa, Reemtsma, Hella, VHV, BBraun, Deutscher Ring KV, Zinspilot, NYDA
Impact +
responsibilities
Art direction + visual design
Guiding projects from concept to execution, shaping visual identities, 3D worlds and motion that tell compelling stories and create emotional impact.
Frontend + interactive development
Transforming design concepts into responsive, high-quality digital experiences through clean code and thoughtful interaction design.
Clients
ROSSMANN, tesa, Hapag-Lloyd, Signal Iduna, Hermes, Hermes Transport Logistics, Deutscher Ring, HOYA, HEM, Käuferportal, e-Spirit, Lifestrom
References
Here’s what clients and colleagues say about me.
Stefan’s professionalism and clear communication make every collaboration smooth and enjoyable, while his creative guidance consistently leads to new and innovative solutions. These exceptional skills enable him to deliver compelling and precise visuals every time.
Thank you very much for the excellent collaboration! It was not only a great pleasure professionally, but also truly wonderful on a personal level. Your outstanding UX/UI expertise has significantly moved our team forward. Always happy to work together again!
I have the pleasure of working with Stefan as a UX Designer and can truly recommend him. Stefan brings a wealth of expertise and a great sense for user needs. His designs are not only creative but also well-structured and highly user-friendly.
Stefan has been a force in supporting our product design team. He is a very collaborative and enthusiastic designer. Always striving to improve and putting customers views first. Thank you very much for all your contributions. We hope to see you soon!
With his motion design skills, Stefan adds an extra layer of impactful storytelling to every project. He is highly organized, receptive to team feedback, yet always stays true to his principles and asks critical questions throughout the process that bring real added value to the projects.
Stefan and I have been working together for years. What I appreciate about him is his deep professional expertise and his pleasant personality. He works independently, reliably, and meticulously - and always brings new solutions to the table. As a client, I trust him completely.
Stefan delivers not only professional designs but also impresses with his ability to quickly grasp complex challenges and develop multiple solutions at once.
Always up-to-date and highly versatile, from UI/UX to motion graphics, Stefan can handle it all and is therefore a trump card in any project. Over the past 12 years, I’ve worked with Stefan on various projects and have come to appreciate him as a reliable advisor and, above all, a true project rockstar.
