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Bruno Gois

@brunogois

Senior Mobile Engineer with 13+ years in React Native, Android and iOS. Shipped 50+ apps, from a bank's voice payment card to medical devices.

Brazil

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What I'm looking for

I'm open to international remote roles.

Senior Mobile Engineer with 13+ years of experience: ~10 years in native Android (Kotlin, Java), ~10 in native iOS (Swift) and 9 in React Native (TypeScript, custom native modules). I've built 50+ apps and own the full lifecycle, from requirements to Play Store and App Store releases.

Recent work: built the first voice-enabled payment card integration of a Brazilian bank (BLE, NFC, text-to-speech) in an app with 10M users, and integrated pulse oximeters, CPAP machines and an EEG headband into a React Native health app, including i18n/l10n and global distribution. Earlier, I led a team of 4 mobile engineers (50K+ users, real-time multi-camera video, smartwatch app), built a school super app from scratch, and cut critical crashes by 95%+ using Firebase Crashlytics.

Skills: React Native, TypeScript, Kotlin, Swift, Android, iOS, BLE, NFC, REST APIs, CI/CD, technical leadership, SQL, C#/.NET, AI-assisted development (Claude Code, Codex).

Experience

Work history, roles, and key accomplishments

Current

Senior Mobile Engineer

Current

Banco do Brasil

Jan 2022 - Present (4 years 9 months)

Took sole ownership of the BB Voz mobile implementation across the BB and Ourocard apps, integrating a pioneering voice-enabled payment card in Brazil. Developed a voice guidance feature for visually impaired customers and built ordering flows for payment wristbands and cards.

React Native Native Android Native iOS Bluetooth NFC Text To Speech 3rd Party SDKs Mobile Development

Senior Mobile Engineer

SleepUp

Jun 2021 - Oct 2026 (5 years 4 months)

Built and evolved a healthcare app using React Native and native iOS and Android integrations, during a period of significant startup growth. Integrated EEG headbands, pulse oximeters, CPAP machines, and monitoring devices, and delivered internationalization and app distribution.

React Native Native iOS Native Android Bluetooth Healthcare Devices Internationalization Localization App Distribution

Lead Mobile Engineer

Seventh

Oct 2019 - Jun 2021 (1 year 8 months)

Led a mobile team responsible for apps serving 50K+ users, taking ownership of projects during a transition. Built native Android and iOS applications and led the adoption of cross-platform mobile development, including security camera and remote concierge integrations.

Native Android Native iOS Cross Platform Development Performance Optimization Live Video Mobile Engineering Team Lead

Senior Mobile Engineer

Big Brain Education

Oct 2018 - Oct 2019 (1 year)

Developed new cross-platform and native educational products that contributed to business growth. Worked directly with clients to translate educational needs into mobile solutions.

Cross Platform Development Native Mobile Development Client Engagement Product Development

Mobile Engineer

Econet Editora Empresarial

Nov 2017 - Oct 2018 (11 months)

Owned a portfolio of 10+ native Android and iOS apps serving 40K+ users, built a new app from scratch, and led the redesign of the main application. Implemented error, performance, and retention monitoring, reducing critical failures by more than 95% and increasing user retention by more than 30%.

Native Android Native iOS Mobile Application Developer Performance Monitoring User Retention UX Improvement

Software Engineer

Tudo do RH

Jul 2016 - Nov 2017 (1 year 4 months)

Developed a C#/.NET ERP for headquarters and 35+ branches, stabilized billing operations, and implemented complex SQL Server queries. Promoted to Lead Software Engineer.

C#.NET SQL Server ERP Development Billing Systems