HORIZON HIS
High-fidelity navigable prototype for a complex hospital information system, reviewed with the CEO and presented at Hospitalar 2025.
UX Lead / Product Designer · Healthtech · Product Strategy
View projectNelson Secco
Senior Product Designer
Designing digital products for complex systems.
Senior Product Designer with a software-development background, working hands-on across Design, Product, and Engineering.
- UX Strategy
- Product Discovery
- Design Systems
- AI-assisted Product Design
Featured projects
SUBITER
Product Design leadership for a production inspection platform connecting operational workflows, traceability and AI-assisted review.
UX Lead / Senior Product Designer · Deep Tech / Industrial Inspection · AI-assisted Workflows
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Featured practice
AI-Assisted Design Engineering Operating System
From experimentation to professional practice: a framework I created to connect Design, Engineering and AI through evidence, continuity and human accountability.
Explore the frameworkEvidence
Check sources and context
Decision
Decide with accountability
Artifact + QA
Inspect, compose and validate
Continuity
Record decisions and next steps
Additional product work
DASA — Canal do Consultor
Discovery-led product design translating research into business rules for a complex consultant scheduling journey and product decision structure.
Product Designer · Healthtech · Discovery and Business Rules
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REDE DCC 1.0
Interaction design for a financial choice within a payment journey spanning transactional states, decision points and exception handling.
Senior Product Designer · Payments / Dynamic Currency Conversion · Interaction Design
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Selected work
Design systems for mobility
ConnectCar / Freeflow
Responsive UI and design-system studies for ConnectCar / Freeflow.
Editorial representation
- Mobility
- Responsive UI
- Design Systems
How I work
From evidence to delivery, with AI
I structure collaboration with AI agents through the framework I developed. Evidence, Design Systems and persistent records support the work; product direction and final accountability remain human.
Evidence and context
Gathering research, approved sources, and project constraints to understand the problem and preserve the origin of each piece of information.
Product decisions
Turning evidence into requirements and priorities, distinguishing facts, inferences, and hypotheses before shaping the solution.
Design and implementation
Inspecting the current artifact and reusing Design System components and patterns. AI supports execution within authorized scope.
Review and QA
Defining acceptance criteria and checking experience, accessibility and technical quality. Distinguishing executed tests, available evidence and human approval.
Continuity
Preserving decisions, evidence, and next steps in persistent records to resume work across sessions with context and accountability.
Behind this portfolio
This portfolio is also a product.
Designed and built directly in code, it evolved through cycles of decision-making, implementation, human review, testing, and production validation—connecting Product Design, Engineering, and AI-assisted development.
See how it was built →Professional profile
About
Senior Product Designer
Designing digital products and complex systems with hands-on delivery focus.
UX Consultant
Independent engagements focused on UX strategy, discovery, and product direction.
Product × Engineering
Connecting product decisions to implementation continuity across teams.
I’m Nelson Secco, a Senior Product Designer who also works as a UX Consultant on independent engagements. I work at the intersection of Design, Product, and Engineering. My background combines UX and Product Design experience with software development, helping me understand both the experience we want to create and the technical conditions required to turn it into a real product.
I work hands-on across complex products and systems: investigating context, structuring flows and rules, designing interfaces, and collaborating closely with Engineering through implementation. My role is not to replace other disciplines, but to create continuity between product decisions, experience quality, and technical feasibility.
This practice led to the AI-Assisted Design Engineering Operating System, a framework I created and now use as an operational baseline in real professional work, adapted to each engagement. It connects evidence, Design Systems, execution and continuity across sessions. AI supports the work; decisions, critical review and final accountability remain human.
My background includes products for Embraer, Santander, Bradesco, DASA, REDE, ConnectCar, and Salux, as well as startups such as Subiter, TerraMagna, and NOALVO, recognized in PEGN's 100 Startups to Watch. N3LX Digital Business is the business structure through which I lead independent Product Design and UX consulting projects.
Beyond product and technology
Outside of digital product work, I also write and produce original music as N3LX — another space where I explore creativity, experimentation, and making things.
Listen to N3LX on SoundCloud (opens in a new tab)Contact
Let’s build something meaningful.
Have a complex product challenge, a Product Design opportunity, or a UX consulting project? Let’s talk.