Sr. Product Designer & User Researcher

Gilberto Sepulveda

Transforming complex technical SaaS products into experiences humans actually enjoy across medical devices, freight logistics, and e-commerce.

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Gilberto Sepulveda
13+
Years of experience

Expertise

What I bring as an
End-to-end designer

Click to see skill

Tap to see skill

Typography, colour, layout, and visual craft; the foundation on which everything else that is visual is built.

UnlocksInterface design

Motion and micro-interactions that give interfaces life, rhythm, user delight, and feedback.

UnlocksInterface design

Structuring information in a way that feels just right. Creating corporate guidelines for copywriting. Designing structures where information can be represented interactively.

UnlocksUser experience design

End-to-end thinking about what to build and why. The thinking on the fundamentals of making a product successful by providing value to the user.

UnlocksUser research

Turning visual craft and motion animations into interfaces that evoke a sense of familiarity for the user.

Built onVisual designMotion designUnlocksDesign systemsUser experience design

The connective layer between research and interface design. Shaping how systems get built, how it affects the development strategy, and what kind of experience the design is intended to evoke.

Built onInterface designUser researchContent designUnlocksDesign systemsProduct strategy

Understanding the real user needs and their behaviour to ground product decisions strictly on evidence. Turning assumptions into actionable knowledge.

Built onProduct designUnlocksUser experience designProduct strategyQualitative researchEvaluative research

Creating scalable AI-ready component libraries, copy style, and motion patterns that keep a product consistent at scale.

Built onInterface designUser experience designUnlocksAI-assisted implementation

Translating user insights and stakeholder requirements into roadmaps that are aligned with the business goals.

Built onUser researchUser experience designUnlocksComplex domain design

Conducting interviews online and in person that uncover unexpected user behaviour and hidden pain points that data can't simply capture.

Built onUser researchUnlocksEvidence driven design

Conducting usability testing and evaluative A/B testing that validate whether the design actually works as intended.

Built onUser researchUnlocksEvidence driven design

Manipulating front-end development of an interface through the use of AI. Turning user flows into production-ready interfaces for easy development.

Built onDesign systems

Applying strategic design thinking to specialised applications with unique audiences, such as medical software for surgeons or freight logistical software for traders.

Built onProduct strategy

Making strategic design decisions backed by data that explain why a design would achieve particular goals. Using qualitative results to make decisions in future development. Evaluating the performance of a design through quantitative methods.

Built onQualitative researchEvaluative research

Selected Work

Case studies

Cees-Willem Hofstede
Gil is a gem to have around – not just for his sharp humor, but for his genuine camaraderie as a colleague. He's done an incredible job mapping out how our projects align with market trends and finding ways to stay ahead of the curve.

Cees-Willem Hofstede Sr. Software Engineer

Daniel de Barros
I had the pleasure of working with Gilberto during the design and development of various software systems at Zimmer Biomet, where Gilberto had sewn the golden thread for the design and aesthetics of the various interfaces.

Daniel de Barros Software Engineer

Tim Moerkerken
Gilberto’s approach to collaboration is genuinely positive, making every project discussion productive and enjoyable. Beyond his professional skills, he’s a compassionate listener and a great person to be around.

Tim Moerkerken Software Engineer

Lars van Loo
Not only does Gilberto excel in his craft, but his positive energy is infectious. He has a natural ability to uplift the team with his cheerful character, making the work environment a joy to be in.

Lars van Loo Biomedical Engineer

Maite Gieskes
His expertise in tools like Figma and Zeplin is impressive and professional, enabling him to efficiently translate ideas into tangible, visually great designs that take into consideration the full product lifecycle; he not only focuses on creating aesthetically pleasing interfaces but also prioritizes functionality and usability throughout every stage of development.

Maite Gieskes Human-centered Medical Device Engineer

Filipe Silva
Gilberto is an immensely capable and sharp UX designer. Not only does he make software look good, he makes it simple and delightful to use. From first sketch to final product, he works closely with stakeholders, developers and POs to make sure the users will get the best possible experience, and fights for it to continue that way.

Filipe Silva Sr. Software Engineer

Wim van Baaren
Gilberto's ability to juggle multiple projects was unlike any I’ve seen before and made a dramatic difference in the productivity level of our teams.

Wim van Baaren Agile Coach & Product Owner

Eelco Zuurbier
Gilberto is a great and social collegue and very creative and innovative designer. Gilberto always come up with new idea's and solutions for complex design problems, which resuls in a great finished product.

Eelco Zuurbier Sr. Test Engineer

Rostislav Roginevich
Not only does he know how the product should look like, he also is capable of providing a full-time support to a team, carrying of every pixel is in place, every colour as pleasant to the customer's eye as a tulip's petal. He is always in course of the latest and most catching design approaches, at the same time, - Gil himself is a flagship of modern Mobile Application Design Theory.

Rostislav Roginevich Lead Engineer

Trusted by

Clients

Ajax Amsterdam
Al Jazeera
Comex
Conarte
Coolblue
Findhotel
Maersk
Nationale Nederlanden
Politie
University of Twente
Wegener
Zimmer Biomet
TrackBee
Floorplanner
Ajax Amsterdam
Al Jazeera
Comex
Conarte
Coolblue
Findhotel
Maersk
Nationale Nederlanden
Politie
University of Twente
Wegener
Zimmer Biomet
TrackBee
Floorplanner

Let's build
something worth using

Available for new projects in the Randstad area and remotely worldwide.

See Gil's LinkedIn