Looking for a job

Mariana

@marianacantini

Message

I turn opaque, high-stakes systems into intuitive flow — from research to pixel.

Portugal

Message

What I'm looking for

I seek a job that involves cutting-edge technologies like web3 and AI, in an inclusive environment that values diversity and respects all perspectives. I desire a position with autonomy to tackle complex global challenges, and I'm eager to work with innovative organizations that prioritize collaboration and innovation.

Senior product designer with 13+ years turning high-density, high-stakes systems into frictionless digital products — from 0→1 startups to regulated enterprise at scale. My core expertise is complexity abstraction: taking dense logic — legacy ERPs, cross-border compliance, agentic AI — and translating it into clear product decisions. Contributor to a $2M raise, Brazil's first Open Finance and Pix launches, and products used by 13M+ people.

Experience

Work history, roles, and key accomplishments

Current

UX Lead & Founding Member

Current

Zerra

Dec 2024 - Present (1 year 7 months)

Architected an AI-native operating model that replaced a manual advisory process with structured agentic workflows. Designed an AI onboarding engine that reduced intake from weeks to ~30 minutes and expert close from 45–90 minutes to 15, helping secure a $2M seed round and scale first-call close without new intake staff.

UX Strategy Agentic AI workflows Claude Replit AI onboarding design Decision tree mapping Prototyping Product discovery Prompt Engineering Product Discovery

Strategic UX Designer

TOTVS

Jul 2023 - Oct 2024 (1 year 3 months)

Established ideation and design-critique rituals for a 70K-enterprise product org to create a repeatable decision-making process. Brought decision-makers into design earlier and audited workflow data layers with engineering leads to reduce rework and protect operational velocity for global clients.

Cross Functional Collaboration Enterprise UX Design critique facilitation Product design governance Data layer auditing UX UI standards Cross functional collaboration UX research synthesis Workflow Analysis Stakeholder Management

UX/UI Designer

Freelance

Nov 2022 - Jul 2023 (8 months)

Delivered end-to-end UX/UI for multiple startup and SMB clients across web and mobile, covering concept to delivery. Built client-ready designs aligned to product needs and user journeys.

Web App Design User Centered Design Client Collaboration End to end design delivery Wireframing Prototyping Visual design systems Client collaboration Mobile App UX

Product Design Lead

Rhizom

Jun 2022 - Nov 2022 (5 months)

- Led the design process for decentralized applications, improving user adoption and confidence in the DeFi and crypto ecosystem.
- Reduced design iteration time by 25% through implementing a Design System, streamlining workflow and accelerating product development.
- Designed and launched DeFi Wallet, DeFi Stake, DeFi Grants, and NFT Tourism Marketplace

Senior Product Designer

iti Itaú

Mar 2020 - Apr 2022 (2 years 1 month)

- Strategically led the design process for key bank products, increasing user return/recurrence and raising awareness of strategic products like Pix, Open Finance, and Payments.
- Recognized as a reference for Product Discovery and UX Strategy, contributing to the development of successful product OKRs and KPIs.
- Launched Pix as the first institution, resulting in a waitlist of 200K users

Senior UX Designer

Estúdio Colletivo

Aug 2017 - Dec 2019 (2 years 4 months)

Established UX processes inside a 20-year-old studio to expand its digital offering. Improved project-delivery efficiency through more structured workflows and design practices.

DesignOps UX process design Digital product UX Service design thinking UX standards Stakeholder Management Workflow Improvement Delivery Efficiency Team Enablement

UX/UI Designer

Agência e-Plus

Aug 2016 - Sep 2017 (1 year 1 month)

Delivered data-driven UI/UX across 60+ e-commerce projects, improving conversion outcomes. Produced design solutions focused on measurable performance and e-commerce usability.

Data driven design Responsive UI Usability informed layout Design documentation Cross functional delivery Ecommerce UX design documentation UI Design Conversion Focused UX User Journey Mapping Cross functional Delivery

UX/UI Designer

Profite

Sep 2015 - Feb 2016 (5 months)

Drove a mobile-first redesign that increased mobile conversions. Designed UX/UI updates to improve mobile usability and performance for e-commerce marketing experiences.

UI Redesign UX Strategy Responsive Design Design Iteration Mobile usability Design iteration Visual design systems Ecommerce UX

Senior UX Designer

LaTIC UERJ

Apr 2013 - Sep 2015 (2 years 5 months)

Designed and validated an educational app through user research with students and teachers. Created wireframes and ran usability testing to refine the experience and support adoption.