Leonardo Ribeiro

D

Senior Product Designer

Delfos Energy

Nov 2025 - Aug 2026 (10 months)

• Sole designer on the company's core energy monitoring and analytics platforms, working within a fully international team with stakeholders across Europe, the USA and Latin America;
• Set design direction, visual standards and experience quality across the product, from discovery through delivery;
• Owned and evolved the Design System (tokens, component library and living documentation) keeping multiple product teams consistent without a dedicated systems team;
• Validated every ticket against its design intent before release, catching scope and behaviour gaps ahead of deploy.

G

Senior Product Designer

GBM Tech & Control

Nov 2024 - Dec 2025 (1 year 2 months)

• Owned design for a port management system used daily by terminal operators and logistics teams, working alongside PMs and POs to map opportunities and improvements;
• Ran moderated qualitative and quantitative research and workshops, connecting findings directly to product releases;
• Designed interfaces and interactive prototypes to validate ideas, and built the entire new Design System.

Product Designer

Rivalry

Nov 2023 - Nov 2024 (1 year 1 month)

• Redesigned gaming platform navigation, bringing +23% session time in the first month;
• Delivered responsive experiences for 100k+ monthly users;
• Implemented a design system adopted across 3 global squads.

C

Freelance Product Designer

Corsi

Jun 2021 - Nov 2024 (3 years 6 months)

• Ran an independent design and development studio delivering branding, UX/UI and front-end for SaaS and digital service clients;
• Led end-to-end product design for clients including Valary, a US SaaS startup in project management and productivity;
• Owned scoping, stakeholder alignment and strategic consulting.

Y

Product Designer

YOUDevelop

Jun 2021 - Nov 2023 (2 years 6 months)

• Redesigned "Pupz - Identifica Pet", a GPS pet-tracking app: +35% customer satisfaction and +20% user base within three months of release;
• Revamped an e-commerce interface, driving an 18% increase in conversion and a 10% drop in cart abandonment;
• Delivered full-cycle UX design for websites, landing pages and mobile apps.

P

Product Designer

Personal Tech

Jan 2021 - May 2021 (5 months)

• Designed a physical activity tracking dashboard that raised user engagement 22% within its first two months;
• Contributed flows, prototypes and usability testing to a mental well-being app that averaged 4.7/5 in user satisfaction;
• Worked the full product cycle from ideation through post-launch metric analysis, producing both low- and high-fidelity prototypes.

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Leonardo Ribeiro

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