Eduard Warkentin
User Experience Design Specialist

I am a freelance, senior user experience designer with more than 15 years of experience in research, analysis, conception, design and development of interactive applications. Based in Potsdam/Berlin.

Eduard Warkentin Senior User Experience Designer

Work

ImmoScout24

Since Feb 2026
Development of UX for homeowners

Since February 2026 I have been part of the Professional team at ImmoScout24. As a UX and UI designer I shape a core product around selling real estate and collaborating with brokers – with the goal of making the selling process secure, simple and transparent for property owners. My focus is on wireframing, prototyping and UX/UI design.

  • Wireframing
  • Prototyping
  • UX Design
  • UI Design
Eduard Warkentin UX Design for PassportCard

PassportCard

Jan 2026
Funnel optimization for international health insurance

Based on an analysis of usage data, I examined PassportCard's sales funnel and identified optimisation potential. From this I developed several solutions: a quick fix that could be implemented immediately, as well as a fundamental rebuild in two variants – building on the existing design system and prepared for an A/B test.

  • Analysis
  • User Flow
  • Wireframing
  • Conversion Optimization
  • Design System
  • A/B Test

Bosch

Nov – Dez 2025
Research on heat pump control products

At the end of 2025, I researched the market and competitive landscape around smart apps for app-based heat-pump control and AI-supported control solutions in the UK and the Netherlands for Bosch. I won the engagement thanks to my solid heat-pump knowledge from the Vattenfall project. Throughout the research I made intensive use of AI tools.

  • Market research
  • Competitor research
  • Benchmarking
  • AI-assisted research
Vattenfall myHighlights App Project Member Eduard Warkentin

Vattenfall

2021 – 2025
Supporting sustainable development

For almost five years I supported Vattenfall as a UX and UI designer. For the myHighlights app I was responsible for UX and UI design and accompanied the entire product process from concept to release – in close coordination with stakeholders, the product owner and the development team, including active involvement in quality assurance. The app is published on the Google Play Store and the Apple App Store and reached a rating of 4.7 stars in both stores over the course of the project. For more than a year I worked on the app's accessibility in line with BFSG and WCAG. On a regular basis (around twice a year) I designed, conducted and evaluated usability tests for both the app and the conversion pages. I also designed conversion pages for ecological products such as solar, e-mobility and heat pumps.

  • Analysis
  • Information Architecture
  • Wireframing
  • Prototyping
  • User Testing
  • UX Design
  • UI Design
  • App Design
  • Accessibility
  • Conversion Optimization
Growney Project Member Eduard Warkentin

Growney

Since 2017
Making investments easy – for everyone

Early in 2017, the Berlin fintech startup Growney asked me to redesign its website and the web app of the same name – evolutionary and based on user tests. This grew into a collaboration that continues to this day. I am responsible for UX and UI design and evaluate usability tests, have supported two website relaunches (including CSS specs and QA) and built a design system in Figma. My focus is on the web app: the application funnel (funnel/wizard) and the internal area for managing investments.

  • User Research
  • Analysis
  • User Testing
  • Information Architecture
  • Wireframing
  • Prototyping
  • UX Design
  • UI Design
  • Design System
  • CSS Specs
Eduard Warkentin UX/UI-Design for GLS eComLab

Bettermile (GLS eCom Lab)

2017 – 2023
Creating exceptional delivery experiences

From 2017 to 2023 I supported Bettermile, a start-up of the international logistics company GLS. I joined as the first person after the three founders – by the end of the collaboration the company had grown to more than 80 employees. First I built the MVP “Parcel Shuttle” from scratch (wireframes, designs and web front-end). I then developed a highly complex driver app for tablets and smartphones from zero, supporting drivers in delivering parcels – from wireframes through MVP to the final UI, including live test drives with the drivers. Thirdly, I created a back-office web application to manage app users and licenses. App and back-office were pure B2B projects.

  • User Research
  • Analysis
  • User Tests
  • User Flows
  • Wireframing
  • Prototyping
  • UX Design
  • UI Design
  • App Design
  • MVP
  • B2B
Museum Barberini Website Project Member Eduard Warkentin

Museum Barberini

2020
Relaunch with focus on accessibility

In 2020 I was part of the Stan Hema team that relaunched the Museum Barberini website with a focus on accessibility. I was responsible for the event filter logic as well as wireframing the event overview and the collection. Together we developed a hi-fi prototype based on real event data to test and refine the filter logic.

  • Analysis
  • Information Architecture
  • Wireframing
  • Prototyping
  • UX Design
  • Accessibility
Eduard Warkentin IA for Bette Website @ Stan Hema

Bette

2020
In-depth analysis and recommendations

For Bette, a manufacturer of premium bathroom products, I analysed the website's visitor statistics and information architecture as part of the Stan Hema team. I created and evaluated user tests and interviews with all relevant user groups and derived concrete, wireframe-backed recommendations for improvement.

  • User Research
  • Analysis
  • User Testing
  • Information Architecture
  • Wireframing
  • UX Design

Nextmarkets

2020
Streamlining and focusing of a product website

In summer 2020 KREATED reworked Nextmarkets' brand. In this process, I supported the redesign of the product website as a UX expert. In addition to implementing the new visual language, the focus was also on reducing the content to the essentials. From a multi-page structure to a one-pager.

  • Information Architecture
  • Wireframing
  • UI Design
Eduard Warkentin UX-Design Wireframes Ideal Universal Life

Ideal – My Universal Life

2019
Taking an insurance product to the next level

In the summer of 2019, I joined the team at Ideal Versicherung to conceptually redesign the user journey of the life-insurance product “My Universal Life”. My contribution focused on the conceptual work: UX workshops, information architecture and wireframes.

  • Analysis
  • Information Architecture
  • User Flows
  • Wireframing
  • Prototyping
  • UX Workshops
  • UX Design
Eduard Warkentin UX-Design Wireframes Urania Berlin Website

Urania Berlin

2018
Making accessible what's the most important – on every device

With a tradition spanning more than 125 years, Urania Berlin has established itself as one of the leading centres for dialogue between science and the public. In 2018 it commissioned Stan Hema to redesign its entire brand communication, including the website. Within the team I was responsible for the extensive events calendar of the new, responsive website – from user research and information architecture through prototyping to the CSS specs.

  • User Research
  • Analysis
  • Information Architecture
  • Wireframing
  • Prototyping
  • UX Design
  • CSS Specs

Clients

Vattenfall
BOSCH
Bundesdruckerei
Stan Hema
GLS
Viessmann
Bettermile
KMS Team
growney
MetaDesign
Urania Berlin
Ideal Versicherung
Museum Barberini Potsdam
Mehnert Corporate Design
Staatliche Museen zu Berlin
Bette
Zeiss
Hypovereinsbank

Testimonials

Robert Hentschel Head of UX / UI, Vattenfall GER

Die Zusammenarbeit mit Eduard erstreckte sich über mehrere Jahre und war durchweg sehr positiv. Er hat in verschiedenen Teams an unterschiedlichen Projekten mitgewirkt und sich dabei stets schnell in neue Themen und Anforderungen eingearbeitet. Besonders schätzen wir die hohe Eigenständigkeit und Zuverlässigkeit, mit der Eduard Aufgaben übernimmt und Lösungen entwickelt.

Jonas Haase CTO, Growney GmbH

Ich arbeite seit einigen Jahren sehr erfolgreich mit Eduard zusammen, der bei uns (Interaktions-) Design und Usability sowohl unserer Website als auch unserer App im wesentlichen gestaltet. Eduard versteht es sehr gut aus unseren Anforderungen für den Nutzer eine einfache und zugängliche Benutzerführung zu Entwerfen, die darüber hinaus auch noch visuell ansprechend ist. Seine benötigte Zeit um sich einzuarbeiten ist dabei kurz, die Ergebnisse immer so wie vereinbart.

Mathias Illgen CEO, Stan Hema GmbH

Ich empfehle Eduard als UX-Designer und Online-Developer uneingeschränkt. Er verbindet nutzerzentriertes Design mit fundierter Webentwicklung und setzt komplexe Anforderungen in intuitive Interfaces um – stets mit Blick auf Performance und Usability. Seit über zehn Jahren bereichert er unser Team und gestaltet Marken im digitalen Raum. Wir freuen uns auf viele weitere gemeinsame Kollaborationen!

Felix Becker Project-Lead & UX-Strategy, Stan Hema GmbH

I've had the pleasure of working with Eduard on several projects. Whether, fast agile projects or complex UX processes, the team benefits from his user-centric mindset and technical expertise. A mix that makes him a very valuable team player in the development of web-based products and services.

Wolfram Kornmann Design Director, KMS TEAM

Eduard verbindet technisches Verständnis und Designkompetenz auf außergewöhnliche Weise. Er schafft es, als Brücke zwischen Entwicklern und Designern zu agieren und sorgt damit für eine reibungslose Zusammenarbeit im Team. Besonders beeindruckend ist, wie schnell er hochwertige Prototypen erstellt, die nicht nur funktional, sondern auch visuell überzeugend sind.

Anja Wiesinger Freelance SEO Consultant

Eduard hat in seiner Rolle als UX Specialist die Struktur und das Design für die Darstellung hochkomplexer Produkte ausgearbeitet. Eduard kommt immer schnell auf die Crux eines Problems und findet dafür smarte und elegante Lösungen. Die 4 Jahre, die ich mit Eduard eng im Team zusammenarbeiten durfte, waren von einer sehr angenehmen Arbeitsweise geprägt. Ich habe den fachlichen Austausch sehr geschätzt und kann Eduard für alle Projekte, in denen Kopf und Ästhetik gefragt sind, empfehlen.

Salina Gandji Digital Design Director

I worked with Eduard on several UX projects at Stan Hema, including the Museum Barberini relaunch and the Bette website analysis. He approaches his work with care and structure, from information architecture and research to wireframes and prototypes. He analyses complex data, translates it into clear structures and designs usable solutions. He is reliable, thoughtful and collaborative, and working with him has always been productive.

Paulo Marketing Project Manager, Vattenfall GER

Working with Eduard was super pleasant and straightforward. He is reliable, committed, and brings strong analytical skills that really helped our project move forward. Everything was professional yet relaxed. I’m happy to recommend Eduard!

Senior Marketing Manager Vattenfall GER

I witnessed Eduard as a clever and quick thinker who instantly translated business needs in high-performing UX interfaces while keeping an eye on the user‘s needs, technical possibilities and the deadlines. For my next app and design project I would definitely rely on his experience

Process

Designing based on data, not feelings

Whenever possible, I always work on the basis of facts – access statistics, user tests, interviews with users and stakeholders...
In this way, all team members have a common understanding of requirements and goals without being completely dependent on personal feelings and assumptions. Especially with existing products it is easier and cheaper than ever to collect significant data.

Product development must be iterative

A digital product is never finished. On one hand, because technical development is so fast, on the other hand, because with each release new insights into users and usage can and must be gathered. The analysis of this data starts a new iteration loop and allows an improvement. Often it becomes really interesting only at the second round, because often only then you have the necessary data. Therefore I prefer a long-term cooperation with my clients.

Eduard Warkentin Design and Development Process Graphic

Release faster, learn faster

I am a proponent of several smaller releases instead of one big one. Not only because users get new functions faster and get the feeling that the product is being taken care of. It's also because you gain new insights more quickly. I'm also a fan of the MVP concept.

Deep understanding of technical development

Since I also work as a frontend developer (on a small scale), I have a good, always up-to-date understanding of development processes. This enables me not only to communicate with developers, but also to realize a cost effective design process and implement hi-fi prototypes.

Focus on function with an eye for aesthetics

The most beautiful visual design is useless if the product is not understood. Nevertheless, a really good user experience also needs the appropriate visual appearance. Even though my focus is on conceptual design, I have many years of experience as a UI designer. Furthermore, I often work closely with art directors, UI and communication designers.

Skills

User Research
Analysis
Wireframes
Prototypes (Lo and Hi-Fi)
User Tests
UI Design

HTML/CSS
JavaScript (JQuery)
Kirby CMS

Contact

eMail
Linkedin
Xing

Languages

German (nativ)
English (fluent)