carFinderFlutter
A car finder in big parking lots app. Made with 💗 and Flutter
Dart
19
2
flutterGE
Feed do site do Globo Esporte feito em Flutter
Dart
10
1
Eduardo Shinkawa
Mentor
Rising Codementor
US$12.00
For every 15 mins
ABOUT ME
Highly autonomous Senior Full-Stack Mobile Engineer with over 10 years of professional experience delivering production-grade applications for US startups and premier financial corporations (Mastercard, Nubank). Specialized expert in React Native (Managed Expo Workflow, Expo Router, & EAS). Proven track record designing and launching 0-to-1 mobile products, including deep full-stack experience with Supabase architectures and automated local data syncing/migrations. Expert at translating Figma designs into pixel-accurate mobile interfaces, implementing location-aware mapping features, and managing the entire solo TestFlight-to-App Store submission lifecycle.
CORE SKILLS
- Mobile Architecture: React Native, Managed Expo Workflow, Expo Router, EAS (Build & Submit), Flutter, Android (Java/Kotlin), iOS (Swift).
- Backend & Security: Supabase, PostgreSQL, Node.js, ExpressJS, Firebase, GraphQL/Apollo, REST APIs, OAuth, JWT.
- Data Layer & DevOps: Drizzle ORM, SQLite (expo-sqlite), GitHub Actions, Bitrise CI/CD, Sentry, TestFlight, App Store Connect.
- Development Workflow: Agile/Scrum, High-Velocity AI-Assisted Workflows (Cursor, Claude Code, GitHub Copilot).
Portuguese, English
Brasilia (-03:00)
Joined March 2015
EXPERTISE
4 years experience
8 years experience
8 years experience
6 years experience
3 years experience
Geolocation data
4 years experience
REVIEWS FROM CLIENTS
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SOCIAL PRESENCE
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EMPLOYMENTS
Senior Full Stack React Native / NodeJS Engineer
Sparkweb Digital Solutions
2021-08-01-Present
ARI Mobile App - Senior Full Stack React Native / NodeJS Engineer
- Architected the offline-first video exp...
ARI Mobile App - Senior Full Stack React Native / NodeJS Engineer
- Architected the offline-first video experience with background download queue, resume-from-position playback, and local progress sync
- Migrated the course screen from a monolithic 1100-line file into testable, co-located components (CourseHero, LessonCard, LockedLessonModal, etc.)
- Built course/lesson progress tracking with optimistic local storage and server reconciliation via React Query
HUA App — Senior Full Stack React Native / NodeJS Engineer
- Led a complex database migration from Supabase PostgreSQL to local SQLite that kept the Supabase Auth layer completely intact, allowing the wellness app to run fully offline without sacrificing secure logins or UX
- Designed and executed the hybrid database architecture pairing Drizzle ORM with a custom SQLite API compatibility layer so existing application screens could seamlessly switch data sources without massive refactoring.
- Developed code patterns in React Native and Managed Expo, ensuring clear architectural boundaries between business rules and UI presentation.
- Tech Stack: React Native, Expo, Expo Router, Supabase, PostgreSQL, Drizzle ORM, SQLite (expo-sqlite), TypeScript, Sentry.
ACSAK - Tech Manual Program — Senior Full Stack React Native / NodeJS Engineer
- Rebuilt a legacy HTML technical manual into a high-performance, pixel-accurate Expo mobile experience so field crews can interactively browse tactics, procedures, resources, and live location-aware maps.
- Hand-crafted responsive layout components featuring collapsible data sections, complex drawer/footer navigation paradigms, and a specialized print-to-PDF pipeline
- Tech Stack: React Native, Expo, Expo Router, TypeScript, SQLite, Zustand, Bun, Jest, Clean Architecture, Figma.
HTML/CSS
SQLite
PostgreSQL
View more
HTML/CSS
SQLite
PostgreSQL
TypeScript
Jest
React Native
Sentry
Expo
Clean Architecture
Figma
Supabase
Bunjs
Drizzleorm
View more
Software Engineer (Frontend)
Housecall Pro (Through Sparkweb Digital Solutions)
2025-01-01-2025-07-01
- Contributed as a Senior Frontend Engineer on the high-velocity Growth Squad, developing and optimizing user-facing platform featu...
- Contributed as a Senior Frontend Engineer on the high-velocity Growth Squad, developing and optimizing user-facing platform features to enhance user acquisition metrics.
- Spearheaded conversion funnel refactors and optimized user onboarding flows to drive seamless web-to-mobile activation loops.
- Tech Stack: ReactJS, JavaScript, HTML5, CSS3, Ruby on Rails, Growth Hacking methodologies, A/B Testing protocols.
HTML/CSS
Ruby on Rails
React
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HTML/CSS
Ruby on Rails
React
JavaScript
A/B testing
View more
Software Engineer (Mobile)
OneOnMe (Through Sparkweb Digital Solutions)
2024-07-01-2024-12-01
- Led the mobile engineering track for a location-aware social gifting platform designed to let users send personalized gifts to fr...
- Led the mobile engineering track for a location-aware social gifting platform designed to let users send personalized gifts to friends at local brick-and-mortar venues.
- Personally managed the end-to-end mobile DevOps and deployment loop, utilizing Expo Application Services (EAS) and GitHub Actions to push builds straight into TestFlight and App Store Connect.
- Developed a suite of consumer mobile features from scratch using React Native and Expo Router, including multi-party gifting schemas, digital payment gate integrations, and an interactive "Pay It Forward" community map feature.
- Tech Stack: React Native, Expo, Expo Router, EAS, GitHub Actions, TypeScript, React Testing Library, Firebase, Digital Payment Gateways.
TypeScript
Payment gateway
Firebase
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TypeScript
Payment gateway
Firebase
React
React Native
Expo
GitHub Actions
View more