Júlio César Petrini
Júlio César Petrini

Lead UX/UI Designer

Open to offers · Member since 21 Oct 2026
Location
Lisbon, Portugal
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Lead

About

Professional summary

I am a Lead UX/UI Designer with 20 years of experience across design industries and more than 10 years focused on digital product design. I combine strategic thinking, human-centered design, visual excellence, and business awareness to create meaningful digital experiences.

I have extensive experience in banking, financial services, healthcare, and gaming. I transform complex user journeys into intuitive products that improve engagement, customer satisfaction, conversion opportunities, and long-term relationships.

My UX process includes journey mapping, identifying pain points, creating user flows, wireframing, rapid prototyping, validating concepts, and delivering polished interface designs. I also create and maintain design systems, UI libraries, style guides, and component inventories.

In the gaming industry, I design immersive and usable game interfaces that balance functional clarity with emotional engagement. My work includes onboarding, game menus, reward systems, inventory items, iconography, progression systems, and player-retention features.

I am experienced in collaborating with product teams, game designers, developers, consultancies, and stakeholders. I use Figma, Adobe tools, Unreal Engine, Perforce, and generative AI tools to deliver accessible, visually compelling, and scalable digital products.

Skills

40 capabilities

Tech stack & tools

Working toolkit

Design

Experience

Career history

Lead UX/UI Designer RIINA LABS INC

I lead the overall user experience and gamification implementation for the new Riina app. I own UX direction, user journeys, wireframe exploration, feature validation, and interface design across key app experiences.

I redesigned the onboarding and tutorial journeys to address previous pain points, reduce churn, and help users understand core app mechanics. I also designed updates for workout uploads, the home screen, profile screen, tournament system, badge milestones, and the Riina Coin reward system.

UX/UI Designer DEUSENS HYPEREXPERIENCE

I contributed to interactive and immersive cultural experiences, including image restoration work for the Monumento da Semana Santa at the Antiga Colegiata de Santa Maria Maior de Bolea. I used digital retouching, painting techniques, and generative AI tools to repair damaged visual areas.

I defined sound effects for an immersive Asturias coal mine VR experience and created the concept design, visual language, and prototype for an interactive map of Lloret de Mar.

UX/UI Designer LINDE HEALTHCARE

I ensured UX best practices across multiple omnichannel platforms within the Digitalization Department. I analyzed existing user journeys, identified pain points, and proposed improvements aligned with company goals and customer experience needs.

I managed UI components, interface guidelines, and the design system for omnichannel projects. I also coordinated the design relationship between Linde and external consultancy partners.

UX/UI Designer SPMS - Shared Services of Ministry of Health

I designed and improved the digital experience for TeleCuidados, the Portuguese National Health Service digital health and care platform. I created interface screens, maintained the style guide, and developed new UI assets.

I also designed health PDF guides for practitioners and patients, using iconography, text, and illustrations to explain prescribed exercises and digital care practices.

UX/UI Designer EGOSOFT GmbH

I led early visual exploration for X5, defining UI concepts, visual direction, and style guides while proposing UI improvements for X4. I created and maintained UI components, guidelines, and inventory items in Figma.

I designed the visual experience for the main game menu and applied the visual style guide to the XSeries website.

Senior UI Artist Starbreeze Studios AB

I established early UI concepts, visual direction, and style guides for PAYDAY 3. I managed the UI library and created components, guidelines, inventory items, and other UI assets.

I supported implementation through PSD atlas files, icon sprites, Perforce, and Unreal Engine. I also created skill-line iconography, pre-planning assets, weapon patterns, achievement icons, security modifiers, and heist-specific icons.

UX/UI Designer CCP Games

I analyzed new-player experience pain points in EVE Online and proposed short-term UI improvements and longer-term redesign opportunities with game designers. My work focused on reducing early churn and helping players better understand game features.

I redesigned Fleet Finder, created the UI for HyperNet Relay in partnership with the Cinematic Department, and redesigned Daily Login Incentives to provide clearer progression, rewards, interactions, and campaign feedback.

UX/UI Designer Santander Bank

I designed digital banking experiences for renewed personal loans and overdraft limit installment payments across internet banking and mobile channels. These products helped customers refinance contracts, access loan limits, and restore positive account balances.

I also analyzed lender insurance claim reports, translated findings into graphs and reports, and proposed an improved insurance acquisition experience to support product revenue.

UX/UI Designer Bradesco Bank

I designed front-end experiences for the Mascote Digital account-management app for children, including tasks, rewards, goals, and investment features. I also designed prototypes for Next investment platforms and collaborated with R/GA and BCG on user-flow concepts.

I contributed to the Mobile Experience Lab project with MIT by designing the Branch of the Future concept and full-scale physical layout model. I also designed the SmartCoin app, combining gamification and augmented reality to engage customers through virtual rewards linked to credit card transactions.

Digital Designer Paineiras do Morumby Sports Club

I created visual and content assets for social media, corporate events, printed media, social and sports events, and internal marketing campaigns. I also supported website and magazine proofreading.

My responsibilities included management presentation design, brand-promotion monitoring, stakeholder negotiation, and HR-supported endomarketing campaign creation.

Education

Learning history

FAM - Faculdade das Américas

Bachelor of Business Administration, Business Administration

Bachelor's degree in Business Administration.

Universidade São Judas Tadeu

Bachelor of Fine Arts, Fine Arts

Bachelor's degree in Fine Arts.

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