I'm Claudia Sunday a product designer and much more . Located in BCN

I design digital products where user needs, business goals and technology meet. UX/UI · Product Design · Design Systems · Research

View my work View CV

My latest experience at Dogfy Diet highlights my versatility: I've designed both customer-facing products (the mobile App and client area) and internal business tools (the sales team CRM). My approach combines data-driven decisions via A/B testing with technical rigor — maintaining robust Design Systems and collaborating closely with IT and Marketing to ensure flawless product implementation.

I have a strong aptitude for early-stage product design, where I thoughtfully apply customer research to craft impactful MVPs. I've also collaborated with front-end teams, particularly in developing Design Systems, bridging user needs with developer efficiency — always turning challenges into actionable, user-centered solutions.

Selected UX/UI projects

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Dogfy Diet subscription cancellation flow redesign

Dogfy Diet: Redesigning cancellation as a retention conversation

I turned Dogfy Diet's pause-and-cancel flow into a journey that listens to each customer's real reason — and protects their most sensitive moments.

#Retention #ConversationalUX #ChurnReduction #ProductDesign
3Group SaaS project

3Group SaaS

Electric distribution company. Creation of a B2B eCommerce for different partners, using a shared database and shared products.

#eCommerce #B2B #Wholesale & Retail trade #Design System #Front-end
Chorescore project

Chorescore

Avoid the awkward talk with your flatmates! Set cleaning habits with your flatmates and make sure everyone is in charge of their own chores.

#Research #Insights #Gamification #Branding #Flatmates
Glashh project

Glashh

Experience chess with a twist! Glashh lets you play and bet money or tokens simultaneously, adding thrill to every move.

#Research #Feature Analysis #Branding #Chess&Bet #Iterations

What I'm doing when I'm out of office 🌴

Hey, if you are still here, maybe you still have interest to get to know a little bit more about me, here's something personal I like to share.

Handmade ceramic vases with handwritten customer research notes
Sunday Ceramics logo

From pixels to pottery

As a UX/UI designer by trade, I'm passionate about blending form, function, and beauty. This ceramics project is an extension of my creative process — a hands-on exploration of materiality, design, and human connection. It reflects my love for research, my curiosity about tactile experiences, and my drive to craft meaningful, expressive work.

Tools

Looking for a Product Designer? Say hi.

sundayclaudia@gmail.com +34 652 580 403