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Mellina Passi

@mellinapassi

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Senior Product Designer specializing in enterprise SaaS, design systems, and AI UX.

Brazil

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What I'm looking for

I seek senior product design roles focused on enterprise SaaS, design systems, and AI-driven UX where I can lead end-to-end product work, mentor teams, and drive measurable business impact.

I am a Senior Product Designer with 10+ years designing complex enterprise platforms, scalable interfaces, and B2B SaaS products across global teams. I operate at the intersection of UX, product strategy, research, and technology, prioritizing clarity, accessibility, and quality at scale.

I lead 0→1 initiatives and end-to-end design efforts—owning discovery, research, prototyping, high-fidelity UI, and engineering handoff—and I have delivered AI-powered workflows that reduced manual operations by 30–40%. I collaborate closely with product, engineering, and leadership to translate ambiguous requirements into well-defined user experiences.

I have extensive experience contributing to and evolving design systems, mentoring designers, and applying usability testing and data-informed design to drive measurable business outcomes. I focus on craft, cross-functional leadership, and scalable UX practices that improve efficiency and decision-making for enterprise users.

Experience

Work history, roles, and key accomplishments

Senior Product Designer

Constellation

Jan 2024 - Dec 2025 (1 year 11 months)

Led end-to-end product design for a complex B2B SaaS platform, delivered data-heavy dashboards and AI-powered workflows that reduced manual operations by 30–40%, and evolved a shared design system to ensure consistency and accessibility.

Product & Design Design Systems UX Research Figma Prototyping Usability Testing

Senior Experience Designer

R/GA

Feb 2021 - Dec 2023 (2 years 10 months)

Delivered end-to-end UX and UI for mobile apps, SaaS platforms, and service experiences, contributing to design systems and improving interaction quality and accessibility across products.

UX Design UI Design Prototyping Design Systems Interaction Design Accessibility Responsive Design Cross Functional Collaboration

Staff Product Designer

Infosys Consulting

Apr 2019 - Feb 2021 (1 year 10 months)

Owned product design and UX research for enterprise platforms, led discovery, prototyping, and usability testing, and mentored designers while collaborating with engineering and product leadership.

UX Research Prototyping Usability Testing Mentorship Stakeholder Management

Design Lead

Elo7

Aug 2014 - Dec 2016 (2 years 4 months)

Led UX/UI for a high-traffic two-sided marketplace, introduced experimentation and Lean UX practices, and maintained design consistency across desktop and mobile products while mentoring designers.

Marketplace Design Interaction Design Experimentation Lean UX Design Consistency Mentorship

UX/UI Designer

Samsung Electronics

Feb 2013 - Jul 2014 (1 year 5 months)

Designed mobile and desktop interfaces for Samsung's product ecosystem, conducted usability testing and competitive analysis to reduce friction and improve feature clarity.

UI Design Usability Testing Research Wireframing Prototyping Cross Functional Collaboration Competitive Analysis

UX/UI Designer

Predicta

Feb 2012 - Jan 2013 (11 months)

Designed mobile and web experiences informed by qualitative and quantitative research, created wireframes and prototypes, and ran A/B tests to improve conversion and usability.

UX Research A B Testing Wireframing Prototyping Analytics

Education

Degrees, certifications, and relevant coursework

Nielsen Norman Group

Certificate, AI Experience Design

2025 - 2025

Completed professional training on designing AI experiences focused on UX patterns and best practices for AI-powered products.

Nielsen Norman Group

Certificate, User Research / AI in Research

2025 - 2025

Completed professional training on accelerating research with AI to apply AI methods to user research processes.

Faculdade Cásper Líbero

Bachelor of Arts, Communication, Marketing, and Advertising

2004 - 2007

Completed a Bachelor of Arts in Communication, Marketing, and Advertising with coursework focused on communication strategies and marketing principles.