TMB

Ecosystem

+104% revenue growth · 400K activated students · First mobile banking app for infoproducers

Project context

Rebrand of the ecosystem, mapping of the service blueprint, creation of a robust design system, redesign of legacy 2 web apps with AI enhancements, and design of 2 new mobile apps and 1 website.

Client

TMB is a FinTech startup with a platform business model that enables producers to sell their digital products through financing.

Segment

FinTech and EdTech, consumer credit applied to digital products

Stage

Early-stage startup, millions of USD transacted monthly, 0→1 plus redesign and rebrand

Business model

Two-sided platform (B2B2C), transactional revenue on financed volume

Target audience

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Producers: digital-product creators who want to sell in installments without carrying the credit risk.

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Consumers: students without access to traditional credit to buy coursesm architecture

Role

Product Design Lead, owning brand, design system, service design and product design across the ecosystem

Team

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CEO

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CMO

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PMO

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2 POs

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8 CXs

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Senior UX Designer

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Junior UX Designer

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Tech Manager

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Tech Lead

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6 Full-Stack Devs

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2 QAs

Stack

Figma, React, Next.js, React Flow, Tailwind, Shadcn, Power BI, Gemini

Period

Feb 2024 to May 2025

Brand

Challenge

A brand with no perceived credibility in a product that asks both sides for financial trust. Every designer carried their own visual language, so the products did not read as the same business.

Key actions

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Market research and competitive analysis

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Brand positioning, archetype and value proposition

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Visual and verbal identity applied across the ecosystem

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Rebrand rolled out product by product

Impact

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+104% revenue growth (2024)

Service Blueprint

Challenge

Challenge

Five interdependent products and departmental silos created invisible friction across acquisition, conversion, activation and retention. Nobody could see the journey end to end, and leadership was deciding without knowing where exactly it broke.

Key actions

Key actions

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User interviews run with the CX team

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Mapped entire user journey across all company departments (closer, success, product/retention, finance, etc.) and technological systems involved.

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Identified critical friction points, redesigned blueprint in collaboration with all areas, and prioritized 3 key improvement actions.

Impact

Impact

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Step-by-step funnel exposed the real drop-offs and began driving product prioritization, risk policy and regional commercial action

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The launch introduced a new SaaS model for Greiner, with subscription plans ranging from BRL 200 to BRL 990 per month 2022

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Step-by-step funnel exposed the real drop-offs and began driving product prioritization, risk policy and regional commercial action

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Projected 65% revenue growth target

Design System

Challenge

Challenge

Architecting a design system while redesigning 2 web apps and designing 2 mobile apps and 1 additional web app, all aligned to the new brand.

Key actions

Key actions

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Token architecture (primitive, semantic, component) with light and dark themes

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Built on Tailwind and Shadcn, the stack developers already used, so design and front-end shared one source of truth

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Legacy styles updated directly in the front-end via tokens

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Documentation and governance for team-wide contribution

Impact

Impact

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Design and implementation up to 5x fasterucing time-to-market by 1-2 months maximum from ideation.

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1 to 2 months less time-to-market from ideation

Producer mobile app

Challenge

Port the key web features to mobile in 30 days, giving producers financial management in their pocket.

Key actions

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Benchmarking

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Prototyping with Design System

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Usability testing

Impact

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First mobile banking app for Brazilian digital-product creators launched

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Full prototype completed and validated in 15 days

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20% activation relative to the web app base

Producer web app

Producer web app

Challenge

Challenge

Producers were confused by the main menu and navigation flows, and had no visibility or control over delinquency in their own portfolio.

Key actions

Key actions

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Benchmarking

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User surveys and interviews

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User-journey mapping

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Information architecture

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Prototyping with Design System

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Usability testing

Impact

Impact

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+11,700 % increase in active Producers

Student web app

Challenge

Checkout is the moment the student signs the financing, and it is where risk enters the business. Identity fraud and credit granted to the wrong profile turned into delinquency months later. At the same time, every extra step costs conversion.

Key actions

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Checkout redesigned into precise, sequenced steps, each with a single verification purpose

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AI identity verification with Gemini: document OCR, selfie with document and liveness check

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Minor-age blocking and identity-consistency checks built into the flow

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Benchmarking, user interviews, journey mapping, prototyping on the design system and usability testing, with credibility and accessibility in mind

Impact

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+355 % uplift in student credit approvals

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400 k activated students using TMB financing

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37.10% conversion from request to settlement, at an average of 23.73 hours

Consumer renegotiation website

Challenge

Existing delinquency was handled by a manual collections and call-center operation: expensive, slow and low in effectiveness. Students already overdue had no way to resolve their own situation.

Key actions

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Self-service renegotiation flow, designed in 30 days

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AI-assisted collections integrated into the operation

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Benchmarking, prototyping on the design system and usability testing

Impact

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+35% higher collection effectiveness via AI

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+22% revenue after the AI collections rollout

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140M in invoices recovered

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87% reduction in average resolution time for overdue cases (2025)

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3,655 organic visits per month and 444 ranked keywords, with no paid media in average resolution time for overdue cases (2025)

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Significant cost reduction in manual collections and call-center workload

Full business impact

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Millions of USD transacted montlhy

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104% revenue growth (2024)

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11,700% increase in active Producers (2024)

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The launch introduced a new SaaS model for Greiner, with subscription plans ranging from BRL 200 to BRL 990 per month 2022

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11,700% increase in active Producers (2024)

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355% uplift in student credit approvals (2024)

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The launch introduced a new SaaS model for Greiner, with subscription plans ranging from BRL 200 to BRL 990 per month 2022

check

355% uplift in student credit approvals (2024)

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35% higher collection effectiveness via AI (2024)

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140 M invoices recovered (2024)

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22% revenue boost after AI collections rollout (2024)

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87% reduction in average resolution time for overdue cases (2025)

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First mobile banking app for infoprodutores launched (2025)

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400k activated students using TMB financing (2025)

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Projected 65% revenue growth target (2025)

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© Stephan Oliveira, 2026

stephan.oliveira.design@gmail.com

© Stephan Oliveira, 2026

stephan.oliveira.design@gmail.com

© Stephan Oliveira, 2026

stephan.oliveira.design@gmail.com