Artur C.

Business & Schedule Management Platform Cross-platform solution for resource coordination across stakeholders. Centralizes agendas, recurring commitments, real-time sync. Scalable architecture with BI dashboards, automated pipelines. Responsibilities & achievements: - Bi-directional Google Calendar API sync engine - Optimized Firestore data structure/indexing for concurrent users - Full CI/CD pipeline with GitHub Actions (App Store/Google Play) - Scalable React Native/TS architecture w/type safety - Jest unit + Detox E2E testing culture - Firebase Cloud Functions for serverless backend logic - Granular Firebase Auth/security rules - Performance/offline optimization - Mentored juniors, code reviews Environment: React Native, TypeScript, Firebase (Firestore, Cloud Functions, Auth), Google Calendar API, React Navigation, Reanimated, TanStack Query, GitHub Actions, Jest, Detox.

Healthcare application React Native app + React e-commerce shop using AI barcode scanning for healthy food analysis, allergen detection, dietary recommendations, and personalized filtering (calories, sugar, vegan/gluten-free). Responsibilities & achievements: - Built 3-camera scanner with native Android/iOS modules - Firebase integration (Analytics, Crashlytics, FCM, BigQuery pipeline) - Automated Fastlane builds for TestFlight/Google Play - New features, ongoing support, React Native updates - Massive refactoring of codebase/business logic - Extracted common modules/components - Code quality gates (linters, tests, GitHub Actions CI/CD) - Mentored team, architectural leadership, sprint planning Environment: React Native, TypeScript, Redux-Saga, Firebase, BigQuery, Fastlane, OpenAI, GitHub Actions, Reanimated, Figma, AWS S3.

Mobile-first e-commerce solution built with Shopify and Tramontina, focused on fast, visually polished shopping for premium cookware, from curated collections to secure checkout and post‑purchase flows. Responsibilities & achievements: Implemented mobile and backend architecture from scratch Drove planning, design, and project documentation Built the app end to end with scalability and performance focus Implemented JWT-based authentication and database design for metrics Added QR code reader functionality and handled high-load scenarios Acted as frontend code owner and led code reviews Set up code quality gates (linters, prettifier, pre‑push hooks, tests, GitHub Actions) Achieved high customer satisfaction by delivering on time Environment: TypeScript, JavaScript, React Native, React, Redux, Jest, Fastlane, Webpack, Push Notifications, Node.js, Express, Git, Shopify, Apollo, AJAX, Google Maps API, GitHub, Figma, React Native Reanimated, Swagger, REST, SFTP, Agile, AWS.