UX · UI · Product Design · Complex Systems

The design
that brings clarity.

I design the structure behind complex products, bridging research, business needs and technical constraints when they don't point in the same direction. I turn ambiguity into clear product architecture, workflows and interfaces.

See my work Let's talk →
Selected Work
5 projects
A B2B portal for hearing care professionals
A B2B portal for hearing care professionals
Product Design · AI Rapid Prototyping · Dashboard Design · Design System · UI · Figma
This project explores how a B2B portal for hearing care professionals could support core clinic tasks across ordering, patient management, warranty and service, accessibility, and product knowledge.
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TrialMed dashboard
TrialMed
Product Design · UX Research · Dashboard Design · Information Architecture · UI · Figma
Led research and product design for a clinical trial platform, translating complex workflows and clinical insights into information architecture, dashboards and a testable MVP prototype.
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ContextLens
Mobile App · Product Design · UX Research · UI · Figma
Designed a context-aware translation system where trust and autonomy were the core constraints, improving perceived trust by 75% and clarity by 85% vs existing tools (early eval, n=7).
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MedTech Hearing Aid
The Sandwitch Method
Innovation · Systems Thinking
Proposed and implemented a structured innovation allocation per sprint, adopted by management in a global MedTech organisation, to enable continuous experimentation across device and app development.
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ITU App
ITU App
Mobile App · Systems Thinking · Design System · UX Research · UI · Figma
Mobile-first redesign of desktop enterprise software, translating complex information architecture into a coherent, usable mobile experience.
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Writing
thinking out loud
Research
What clinical trial managers taught me about designing for calm
Dropout risk was visible in the data long before it became a crisis. The tools just never surfaced it. Here is what that taught me about the difference between information and insight.
April 2026 · 4 min read Read →
AI Design
Why black-box AI is a UX problem, not just an ethics one
When users cannot interrogate a system's reasoning, they stop trusting it, and stop using it. Transparency is not a nice-to-have. It is the core interaction design challenge of our decade.
Coming soon Draft
Stakeholder work
The question no one asks in stakeholder alignment sessions
Most alignment sessions fail before they start. Not because of disagreement, but because everyone is answering different questions without realising it.
Coming soon Draft
Paulina Sieminska
Role UX Researcher & Product Designer
Experience 4 years
Education MSc ITU Copenhagen
Domains MedTech · Enterprise · AI
Status Open to opportunities
"Complexity becomes useful when you can turn it into a system people understand."

I’m a Product Designer who works best with complex products, workflows and domains. I turn research, domain knowledge, business needs and technical constraints into clear product architecture, interactions and interfaces.

What interests me most is the space between what users need, what the business is trying to achieve, and what engineering can realistically support. When those things don't yet align, I like figuring out why, and turning that ambiguity into a product direction the team can build on.

My background spans public healthcare, MedTech and data-driven products (CRM, SaaS, GRC), supported by a multidisciplinary Master's in IT across research, design, technology and business. I bring a research mindset to product design, but my strength is connecting the pieces: understanding the problem, identifying what information matters, structuring complex workflows, and working with others to turn that understanding into something that is technically feasible

Core competencies
qualitative research stakeholder workshops journey mapping affinity mapping information architecture interaction design usability testing design workshops Lo-Fi/Hi-Fi figma design Ai supported design design thinking end-to-end

Let's work on
something that matters.

I work best where research shapes the product direction, in cross-functional teams or dedicated design practices. Open to in-house and freelance roles in UX research, UX/UI, and product design.

Email paulina.sieminska@gmail.com
Phone +45 53 38 08 34
Location Copenhagen, Denmark