Senior Product Designer/Utrecht
I discover what matters to users and craft it into easy-to-use products.
8+ years designing intuitive products end-to-end across native mobile and web, for B2C and B2B. I take ownership of a problem from first concept through to shipped, pixel-precise UI — thinking in entire user flows and digging deep to get to the root problem worth solving.
Experience
8+ years, end-to-end product design
Surfaces
Native mobile & web, B2C and B2B
Strengths
Research, prototyping, shipped UI detail
Currently
Marketplace design at Temper
Case studies
5 projects
Matching clients with the best workers for their shifts
A Best Match recommendation that bridges the trust deficit for first-time applicants, plus invites and automation to keep shifts filled.
- 3.2×
- accept likelihood
- +15pp
- fill rate
- 62%
- share of accepts
Read case study
Helping workers find the shifts that fit them — and get accepted
Onboarding that gets workers ready to be chosen, filters that surface their real chances, and a personalised For You feed.
- Onboarding & resume
- Shift filters
- For You feed
Read case study
Designing a remote personal training experience
An app for gym members and coaches to support progress on a training plan.
A B2B ordering platform small grocery shop owners come back to
Letting grocery shop owners in South-East Asia order their core range online.
Scanning equipment instead of registering it by hand
Automated passport scanning for wells equipment, stored in the blockchain.
How I work
A senior designer who decides what to build with data.
I'm an analytical thinker: I work through a problem space with product data to judge which design changes will actually move the user experience and the business metrics, and which are not worth the team's time. I test prototypes with users myself, and I design inside a design system — extending it when a new pattern is genuinely needed.
01 — Discovery
I prioritise with data, not opinion.
I work through problem spaces analytically, using Mixpanel and Looker to find where the team can make the most meaningful impact — on user value, conversion, and business metrics. Once a quarter we step back for a design sprint to reframe those opportunities.
02 — Research
I test from a hypothesis — and I run the tests myself.
I run smaller-scale tests myself, which has made me sharper about when a quick test is enough and when we need something rigorous. Either way I start from a clear hypothesis: what do I expect to happen, and what would change my mind? Beyond testing, we release to a subset of users and let behaviour tell us what works.
03 — Craft
I design both sides of a marketplace, app and web.
A mobile app for workers, a web platform for companies. Where possible I push for mobile-adaptive solutions on the B2B side too, so the most critical actions are never tied to a desk. I work within a design system and extend it when a new pattern is genuinely needed — the micro-decisions that make a journey feel consistent and accessible, not pixel perfection for its own sake.
Process in practice
Mapping the journey before the screens
Research insights plotted along a customer journey so the product owner can see which functionality actually earns its place.
Arcadis — service blueprint
Sketching before opening Figma
Cheap, fast, and easy to throw away — sketches settle the flow while it's still cheap to be wrong.
Basic Fit — progress concepts
Testing where the work happens
A prototype filled with real data, taken into a warehouse full of equipment and put in front of the engineers who'd use it.
Shell — prototype evaluation
Facilitating to challenge assumptions
Discovery workshops that turn a feature request into user stories and requirements, with technical limits on the table from the start.
Basic Fit — feature discovery
Tools I work in
Grouped by what I use them forDesign
- Figma
- Claude Design
- Adobe Creative Cloud
Data
- Mixpanel
- Looker
- Claude, Gemini, ChatGPT
Research
- Dovetail
- Usersnap
- Hotjar
Collaboration
- Miro
- Jira
- Notion
About me
Recommendations, where I've worked, and writingWhat colleagues say
View on LinkedIn“Kathrin is fantastic at adapting quickly and thinking about the next iteration of designs, not just shipping things off and leaving them once they are done. She’s not afraid to challenge ideas and make recommendations, which pushes the team to achieve even better outcomes.”
Dominika Illes
User Experience Researcher · worked with Kathrin on the same team
“She combines strong drive and delivery with thoughtfulness, clarity, and genuine collaboration. She takes on complex work without losing sight of what matters… a trusted colleague who raises the standard of the teams she works with.”
Love Sootalu
User Experience · managed Kathrin directly
“Kathrin is definitely a valuable asset to your organization since she is good at synthesizing user insight and coming up with ideas. Besides, her proficient skill in visualization helps communicate ideas to stakeholders easily.”
Luke Chen
Senior Product Designer · company mentor, TU Delft Joint Master Project
Career
Writing
All articles on MediumReturning to Tech: 7 Lessons from Life with a Baby
Five months ago, I gave birth to my first child.
Working as an in-house product designer vs. as a design consultant
Five benefits I see of working inside a company's product team, compared to being hired as consultant on a project base.
How to kick-off Discovery Sprints, reframe a problem and align your team
Follow this guide to facilitate kickoff workshops to get alignment on the problem and plan how to reduce uncertainty.
Designing data-driven experiences
8 tips to empower people through data visualisations