Looking for a job

Maylla Souza

@mayllasouza

Product Designer at Mercurial Atlantic Investments building a USDC prediction-market platform and a multi-tenant design system adopted above 90%.

Brazil

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What I'm looking for

I’m open to Senior, Staff, and Lead Product Design roles and project-based consulting.

At Mercurial Atlantic Investments, I work across product design, design systems, and QA for a USDC prediction-market platform. I turn PRDs into flows and high-fidelity screens across its player app, admin, back office, and partner widgets.

I own the company design system across five surfaces, including its architecture, tokens, internationalization, and versioned releases. I ran zero-breakage migrations of more than 280 component instances at a time and raised adoption in the admin product above 90%.

At Accountfy, I designed treasury and debt management products and led the creation of a customizable White Label solution for Itaú BBA. At Own Financial Services, I designed a BaaS White Label platform for internal teams and partner companies.

More recently, I’ve built WhatsApp AI agents and workflow automations for small and mid-sized businesses, taking engagements from discovery through pilot and ongoing operation. I’m open to Senior, Staff, and Lead Product Design roles, as well as project-based consulting.

Experience

Work history, roles, and key accomplishments

Current

AI Builder - Conversational AI & Workflow Automation

Current

Stealth AI Startup

Jan 2026 - Present (9 months)

Built AI agents on WhatsApp for SMBs, owning the full cycle from discovery to deployment. Created modular multi-agent architectures and self-hosted the stack on cloud infrastructure.

Conversational AI LLM Prompt Engineering Typebot Docker DigitalOcean Notion Gemini OpenRouter GROQ

Current

Product Design Consultant

Current

Stealth Startup

Jan 2026 - Present (9 months)

Provided project-based product design for B2B and fintech companies, including CRM/ERP redesign, design systems, UX audits, and QA. Delivered 70+ CRM screens and a shared design system for a multi-franchise field CRM.

Product Design UX Design Design Systems QA Figma User Research Prototyping

Current

Specialist Product Designer & QA Lead

Current

Mercurial Atlantic Investments

Nov 2025 - Present (11 months)

Led product design, design systems, and QA for a prediction-market platform, including white-label player app, admin suite, and partner embed widgets. Built a PRD-to-Figma traceability system and raised design-system adoption to over 90%.

Product Design Design Systems QA Gherkin Figma Storybook Chromatic MCP Research Strategy DesignOps

Senior Product Designer

Accountfy

Nov 2023 - Sep 2025 (1 year 10 months)

Designed treasury and debt management products, led creation of a White Label solution for Itaú BBA, and improved platform navigation based on user feedback.

Product Design UX Design User Research Wireframing Prototyping Figma

Staff Product Designer

Own Financial Services

Oct 2022 - Nov 2023 (1 year 1 month)

Designed a BaaS White Label platform for internal teams and partners, conducted research, and created journey maps and interaction flows.

Product Design BaaS White Labeling User Research Journey Mapping Figma

Design Team Lead

Paketá Crédito

Jun 2021 - Oct 2022 (1 year 4 months)

Led design strategy for Personal and Business Banking, developed White Label credit portals and back-office systems, and managed DesignOps, budget, and mentoring.

Design Leadership DesignOps Design Systems White Labeling B2B B2C Figma

Design Team Lead

Social Bank

Oct 2018 - Jun 2021 (2 years 8 months)

Led design strategy for digital banking, wallets, and payment cards, contributed to M&A initiatives and Pix participation, and developed the company design system.

Design Leadership Design Systems User Research Usability Analysis Figma

Product Designer

Zup Innovation

Oct 2016 - Oct 2018 (2 years)

Designed strategic solutions for financial and telecom sectors, including an API management platform and a low-code campaign automation platform.

Product Design UX Design User Research Wireframing Prototyping Figma

Designer

V.T. Design

Jan 2013 - Oct 2016 (3 years 9 months)

Created and maintained brand visual identity, designed print and digital materials, and produced technical drawings for architecture.

Brand Identity Print Design Digital Design technical drawings

Intern

S.O. Design

Jan 2011 - Jan 2013 (2 years)

Internship at a design firm, assisting with design projects.

Education

Degrees, certifications, and relevant coursework

Faculdade Pitágoras

Postgraduate, Data Science and Artificial Intelligence

2024 - 2025

Postgraduate in Data Science and Artificial Intelligence from Faculdade Pitágoras, from November 2024 to July 2025.

The Interaction Design Foundation

Course, Design Management

2020 - 2020

Completed Design Management course from The Interaction Design Foundation in 2020.

Estácio

MBA, Digital and Multimedia Design

2018 - 2019

MBA in Digital and Multimedia Design from Estácio, from 2018 to 2019.

The Interaction Design Foundation

Course, Visual Perception & Design, UI

2018 - 2019

Completed Visual Perception & Design, UI course from The Interaction Design Foundation, from 2018 to 2019.

Instituto Federal do Triângulo Mineiro (IFTM)

BTech, Internet Systems

2016 - 2019

BTech in Internet Systems from Instituto Federal do Triângulo Mineiro (IFTM), from 2016 to 2019.

freeCodeCamp

Certification, Full Stack Web Development

2016 - 2017

Full Stack Web Development Certification from freeCodeCamp, from 2016 to 2017.

Universidade Federal de Uberlândia (UFU)

Bachelor's Degree, Design

2007 - 2013

Activities and societies: Scholarship holder 2011-2012; student mentor 2008-2010

Bachelor's Degree in Design from Universidade Federal de Uberlândia (UFU), from 2007 to 2013. Scholarship holder from 2011 to 2012 and student mentor from 2008 to 2010.