Artem S.

Cross-platform solution for resource coordination across stakeholders and planning systems. Centralizes agendas, recurring commitments, real-time sync. Scalable architecture with BI dashboards, automated pipelines. Responsibilities & achievements: - Conflict resolution for concurrent calendar edits - Optimistic UI updates with TanStack Query - GitHub Actions for environment-specific builds - Fixed memory leaks in scheduling views (60 FPS) - Fault-tolerant queuing for Google Calendar sync - Refactored Firestore listeners to cut read quotas - Zod schemas for external payload validation - Idempotent Cloud Functions for push notifications - Data warehousing flow to Google BigQuery - Static analysis tools & automated PR checks Environment: React Native, TypeScript, Firebase, Google Calendar API, React Navigation, Reanimated, TanStack Query, Zod, GitHub Actions, Jest, Detox.

Mobile app for asset management firm providing high-net-worth clients secure portfolio management, real-time market data, analytics, rebalancing tools, and advisor communication. Responsibilities & achievements: - Integrated OpenAI audio analysis with Heroku middleware - Modernized state management (Zustand, React Query) - Automated App Store/Google Play releases via Fastlane - Led codebase refactoring for performance/stability - Architectural discussions, code reviews, bug fixes - Managed builds/deployment via App Center/EAS - OTA updates strategy, performance optimization - Full lifecycle collaboration from planning to release Environment: React Native, TypeScript, Zustand, React Query, Fastlane, EAS, Heroku, Figma, App Center, FlashList, Reanimated, GitHub, Jira.

Fintech application Mobile banking platform for business clients: account management, international payments, expense tracking. Complete legacy system rebuild focused on security, performance, modern UX. Responsibilities & achievements: - Led architecture/development from ground up - Collaborated with stakeholders on technical decisions - Built Firebase-BigQuery analytics pipeline for BI - Mentored team, code reviews, technical interviews - Modernized legacy codebase, updated libraries - Integrated Stripe payments, Plaid bank aggregation - Established comprehensive unit testing culture - Managed full cycle: requirements to deployment - Optimized performance, resolved bottlenecks - Addressed technical debt, open-source contributions Environment: React Native, TypeScript, Redux-Saga, RTK Query, Firebase, BigQuery, Stripe, Plaid, Figma, GitHub, Jira.