Sole Flutter engineer for a 15,000+ MAU enterprise access-control and visitor-management platform across Android, iOS, Web and Wear OS. Implemented an offline-first data layer with Drift/SQLite, synchronization, migrations, and resilience to network instability. Built a native Wear OS companion app with data-layer synchronization for auth state and credentials. Implemented hardware integrations (BLE, NFC, barcode scanning) and native bridges for deep linking and device workflows. Delivered complex domain workflows (entries, visitors, incidents, custom fields, access control, alarms, roll calls, reports and exports) with validation and conflict handling. Improved reliability and security via Sentry/Crashlytics, route diagnostics, and optimized rendering, reducing jank frames from 90% to 15% and lowering average frame build time from 51ms to 35ms.

Flutter Engineer at Stroitelny Dvor LLC

July 1, 2023 - June 30, 2024

Developed production internal retail applications for consultants, including a self-checkout system with offline-resilient UX, complex business rules, and payment flows.

Flutter Engineer at ITS LLC

January 1, 2022 - June 30, 2023

Developed a public transport application with maps, routes, schedules, navigation, and real-time user flows. Implemented authentication via government services and integrated external APIs. Built map-based monitoring interfaces and optimized rendering for thousands of markers and dynamic data.