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Júlio César Petrini

@juliocesarpetrini

UX/UI Designer at RIINA LABS INC shaping a new app with onboarding, gamification, and reward journeys.

I am a UX/UI Designer with 20 years of experience in many different areas of Design and Tech Industries, such as Banking, Gaming, Healthcare, Packaging and Publishing, with more than 10 years dedicated to digital products.

As a UX/UI Designer, I have helped Banks and Global Financial Institutions achieve their strategic goals by sharpening mobile user experiences and optimizing customer journeys, creating intuitive and human-centered banking products.  

Within the Gaming Industry, I have enhanced User Flows and visual experiences for well-known worldwide games by designing engaging, aesthetic-driven Game UI that captivates players and improves overall usability through a rich Visual Experience, creating interfaces that feel immersive, elevating the player experience through thoughtful, user-centered design principles.  

As a Visual Artist , I’ve been working as a Professional Illustrator painting for the Comics and Publishing Industries, and also as an Art Instructor with expertise in Traditional Illustration Techniques, such as Watercolour and Gouache Painting, Markers and Illustration Worldbuilding.

Experience

Work history, roles, and key accomplishments

Current

UX/UI Designer

Current

Deusens Hyperexperience

Jan 2026 - Present (10 months)

Worked on image processing for historical heritage monument, defined sound effects for immersive VR experience, and created concept design and prototype for interactive map.

Image Processing Generative AI Sound Design VR Concept Design Prototyping Interactive Maps

Current

Lead UX/UI Designer

Current

Riina Labs Inc

Jan 2026 - Present (10 months)

In charge of overall user experience and implementation of gamification aspects in the new app, including revamping onboarding and designing new app interface with user journeys and gamification systems.

UX UI Design Gamification User Journeys Wireframing Interface Design Onboarding Reward Systems Prototyping

UX/UI Designer

Linde Healthcare

Jan 2025 - Jan 2026 (1 year)

Ensured best UX practices across omnichannel platforms, managed UI components and guidelines, and improved user experience across multiple channels.

UX UI Design UI Libraries Style Guide Omnichannel User Journeys Figma

UX/UI Designer

SPMS - Shared Services of Ministry of Health

Jan 2024 - Jan 2025 (1 year)

Designed and improved digital experience on TeleCuidados Platform, maintaining style guide, creating UI assets, and developing health PDF guides with illustrations.

UX UI Design Style Guide Design Assets Illustration Health Tech Figma Digital Health

UX/UI Designer

Egosoft GmbH

Jan 2024 - Dec 2024 (11 months)

Set UI concepts, direction, and style guides for X5, created and maintained UI components and guidelines in Figma, and designed new visual experience for main game menu and website.

UI Concept UI Libraries Style Guide Figma Game UI Design Web Design

Senior UI Artist

Starbreeze Studios AB

Jan 2021 - Dec 2023 (2 years 11 months)

Set UI concepts and style guides for PAYDAY 3, managed UI library and assets, implemented UI in Unreal Engine, and created game iconography including skill lines and achievement icons.

UI Concept UI Libraries Unreal Engine Perforce Iconography Game UI Design Figma

UX/UI Designer

CCP Games

Jan 2018 - Dec 2021 (3 years 11 months)

Mapped new player experience pain points, redesigned Fleet Finder and Daily Login Incentive features, and created UI for HyperNet Relay in EVE Online.

UX UI Design Game UI Design User Research Redesign Figma EVE Online Prototyping

UX/UI Designer

Santander Bank

Jan 2017 - Dec 2018 (1 year 11 months)

Ensured new experiences for loan acquisition and overdraft installment payment through digital channels, and analyzed insurance claim reports to propose new acquisition experience.

UX UI Design Digital Banking User Journeys Data Analysis Figma Digital Channels

UX/UI Designer

Bradesco Bank

Jan 2010 - Dec 2017 (7 years 11 months)

Designed front-end for digital mascot app, concept and prototype for Branch of the Future with MIT, prototype screens for Next investment platform, and SmartCoin app with gamification and AR.

UX UI Design Front End Design Prototyping Gamification Augmented Reality Figma

Digital Designer

Paineiras do Morumby Sports Club

Jan 2007 - Dec 2010 (3 years 11 months)

Created visual and content for social media, corporate events, and endomarketing campaigns, and managed marketing campaigns follow-up and stakeholder negotiation.

Digital Design Social Media Content Creation Endomarketing Event Design Visual Design Branding