UX that converts.
Not just pretty — effective.
We research, prototype, and test to ensure every design decision boosts your conversión. Data-driven UX, not opinion-based.
UX projects delivered
Average conversion uplift
Years of experience
Native languages
User experience determines your conversión
Our UX specialisations
Four disciplines, one goal: conversión
We don't do generic UX. Each sub-discipline has its own methodology, tools, and success metrics.
User Research
We understand your users before we design. In-depth interviews, surveys, personas, journey maps and real behavior analysis with session recordings.
Information Architecture
Clear structures where users find what they need in 3 clicks or fewer. Card sorting, tree testing and flow diagrams, all validated before anything gets designed.
Wireframing & Prototyping
From idea to clickable prototype in days. Figma for collaborative design, interactive prototypes to validate before anyone writes code.
Usability Testing
Tests with real users, moderated and unmoderated. We spot friction before launch and validate every hypothesis with quantitative data.
UX Services
Six UX services, one for each phase of your product
From the first user interview to post-launch optimisation. We cover the entire cycle.
The ZDS team redesigned our checkout, and conversión increased by 38% in six weeks. The best part: they taught us to make data-driven decisions, not just rely on intuition.
Head of E-Commerce
DACH retailer — fashion sector
Our 6-phase UX process
Research
User interviews, surveys, heatmap analysis, session recordings and a review of support requests. We build personas and journey maps grounded in evidence.
Ideation
Design workshops with your team, opportunity mapping, hypothesis definition and prioritization by impact vs. effort.
Prototyping
Lo-fi wireframes to validate the structure, navigable hi-fi prototypes in Figma. Fast iteration with your team at every step.
Testing
Usability tests with 5-8 users per round. Moderated and unmoderated. Metrics: success rate, time on task, errors, SUS score.
Implementation
Handover to development with detailed specs, design system, tokens and guidelines. We support visual QA and pre-launch validation.
Iteration
Post-launch A/B testing, funnel analysis and continuous optimization based on real behavioral data.
Success Story
E-commerce UX redesign: +47% conversión
How a European fashion retailer boosted revenue with a user research-driven redesign.
European fashion retailer — DACH + Southern Europe markets
Conversion rate
Measured improvement across the full purchase funnel after the UX redesign and iterative testing.
Bounce rate
Reduction after redesigning the information architecture and the homepage.
Add to cart rate
Increase thanks to the new product page, validated with real users.
Weeks to launch
From the first kickoff to go-live: research, prototypes and 3 rounds of testing.
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“UX isn't just pretty wireframes. It's about understanding people, validating with data, and designing so business decisions are evidence-based. Every project has a dedicated senior team.”
Olesya Franiel
Head of UX & Design
UX STACK
The tools we use every day
Professional tools we combine to ensure every design decision is backed by real data.
Why ZDS UX
Design with research vs. design without data
Who we design for
Three user types, three methodologies
Each audience demands a different research methodology. We don't use the same approach for a B2B buyer as for an end consumer.
Wireframes are cheap. Code is expensive. Every hour of research saves ten hours of developing the wrong thing.
Olesya Franiel
Head of UX, ZDS
Frequently asked questions about UX
Let's talk about your UX.
Free audit. No obligation.
Manuel Riveiro
CEO & Digital Strategist