I'm Leo Denega, a 5+ years strategic product designer based in Lisbon

Making complex products
feel effortless.

Leo Denega
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Emergn

Product Strategy, UX Research, Wireframing, Design Systems, Accessibility

At Emergn, I design across Energyline’s energy-management products, improving complex workflows, usability, and information architecture.
My work spans user research, dashboard redesigns, AI-assisted insights, and design systems, delivering clearer and more accessible experiences.

100%

Fewer contrast issues in all pages

3

products supported by shared design system

12

usability sessions informing product improvements

cover

Benchmark Tool Usability Test

Research

UX
cover

Token Refactor

UI

Accessibility
cover

Dashboard Redesign

Product Design

UI
cover

EnergylineTRM MVP

UI

Strategy

AI Assistant

AI

Motion

Thomson Reuters

Product Design, UX Strategy, UX Research, UI Design, Service Design, Information Architecture

At Thomson Reuters, I designed complex tax research workflows, improving Onvio usability, data configuration, compilation, and verification.
I also redesigned communication systems, reducing 87 emails to 12 and saving ~349 emails/month across 299 companies.

86%

fewer messages sent to the end user

349

emails/month saved across 299 companies

cover

User Communication

UX

Documentation
cover

Accountability Blueprint

Service Design

Documentation

Umbler

UI Design, UX Research, Product Discovery, Wireframing, Usability Testing, Design Systems

At Umbler, I designed customer-facing SaaS experiences focused on simplifying email setup, onboarding, and marketing workflows.
Through user research, journey mapping, and interaction design, I translated customer needs into clearer flows and more intuitive interfaces, supporting activation and usability across products.

25%

onboarding improvement

30

users researched to inform onboarding

6

scenarios mapped → more relevant onboarding journeys

cover

E-mail App Onboarding

UI

Mobile
cover

E-mail Marketing Tool

UI

Desktop

Freelancing &
Study cases

Product Design, Product Discovery, Concept Design, Prototyping, Visual Design, Design Thinking

Explored diverse product challenges through freelance projects and independent case studies, designing digital experiences from concept to high-fidelity prototypes.
Applied research, product thinking, and interaction design to validate ideas, simplify workflows, and build user-centered solutions across different industries.

3rd place

Startup Weekend CadastraPet

6

usability scenarios explored across independent product work

cover

Finbooks Website

Web Design

UI
cover

Medtime Mobile App

UI

Mobile
cover

Dronelivery Mobile App

UI

Mobile
cover

Cadastrapet App

UI

Mobile