Open to opportunities

Mateus Rizzo

@mateusrizzo

Message

I build revenue-driving mobile products with React Native, Kotlin, and product thinking.

Brazil

Message

What I'm looking for

I'm looking for product-focused teams where engineering decisions directly improve user experience and business outcomes, with a strong culture of product thinking and technical excellence.

At Daki, I built an installment-payment feature that increased average ticket size by 20%, fixed production issues affecting revenue and customer service, and improved app ratings by 10%. I also developed referral and advertising experiences that improved conversion and enabled campaign-interaction tracking.

Previously at Neon, I delivered lending and debt-reorganization flows for millions of users in a high-volume financial app. I've also led SOU iD's mobile development, migrated its codebase from Flutter to React Native, and implemented blockchain-based credential validation for a privacy-focused digital identity wallet.

Experience

Work history, roles, and key accomplishments

Mobile Engineer

Daki

Mar 2025 - Jul 2026 (1 year 4 months)

Designed and implemented an installment payment feature using React Native and GraphQL, increasing average ticket size by 20% and improving user satisfaction. Resolved critical production bugs and iOS crashes, boosting app ratings and reducing crash reports.

React Native GraphQL AI assisted Development Mobile Architecture

Mobile Engineer

Neon

Jun 2022 - Dec 2024 (2 years 6 months)

Built and maintained lending features for micro-entrepreneurs on Android and React Native, serving millions of users. Developed personal lending products and worked with Firebase and Growthbook for feature experimentation.

React Native Redux Android Kotlin Firebase Growthbook Agile

Mobile Engineer

CPQD

Sep 2021 - Jun 2022 (9 months)

Led mobile development for a decentralized identity digital wallet app, building the initial proof-of-concept and migrating the codebase from Flutter to React Native. Implemented blockchain integration for credential validation.

React Native Flutter Blockchain Mobile Development LGPD

Mobile Engineer

Maktub Tech

Aug 2020 - Sep 2021 (1 year 1 month)

Developed mobile applications using React Native and Expo in a software factory model, delivering projects across multiple client engagements. Adapted quickly to different client requirements and codebases.

React Native Expo JavaScript TypeScript REST APIs