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Bohdan Shraier

@bohdanshraier

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React Native engineer focused on secure, high-performance cross-platform mobile apps.

Ukraine

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What I'm looking for

I’m looking to build secure, high-performance mobile products end-to-end—partnering closely with backend/DevOps to ship fast, improve reliability, and optimize performance through clean APIs and scalable architecture.

I build cross-platform mobile and full-stack products with a focus on security, performance, and real-time user experiences. I have 5 years of commercial experience delivering React Native and web capabilities end-to-end.

In personal finance and banking, I built a cross-platform app with secure authentication and offline-first syncing, plus REST + GraphQL APIs for account management and transaction history. I also integrated push notifications, biometric login, and optimized mobile performance to reduce app startup time.

Across recruitment, e-commerce, and finance platforms, I led frontend architecture decisions and enforced coding standards, while implementing media uploads, reusable UI components, and production-ready CI/CD with GitHub Actions and automated deployments.

Most recently, as a Senior React Native Developer for a healthcare appointment platform, I delivered patient booking with calendar sync and secure messaging. I designed GraphQL schemas, optimized data fetching, improved stability, and collaborated with backend and DevOps to streamline releases.

Experience

Work history, roles, and key accomplishments

Full-Stack Team Lead

QuickHire

Developed a recruitment mobile platform for job seekers with profile management and real-time messaging. Implemented media uploads with AWS S3 integration, led frontend architecture and coding standards, and improved API performance under high load.

React Native Expo TypeScript React Express MongoDB AWS S3 Docker AWS

Full-Stack Developer

FinTrack

Built a cross-platform personal finance mobile app with secure authentication and real-time transaction sync. Designed REST and GraphQL APIs for account management, integrated push notifications/biometric login, and implemented offline-first architecture with CI/CD via GitHub Actions.

React Native TypeScript Redux NestJS PostgreSQL Redis AWS Firebase GraphQL

Full-Stack Developer

FinMate

Developed a web budgeting platform with expense tracking and financial analytics, including interactive dashboards for transaction history and spending insights. Built REST APIs for financial data aggregation, implemented JWT-based authentication, and integrated Stripe subscription billing for premium features using AWS Amplify.

React TypeScript Redux NestJS PostgreSQL Stripe Firebase AWS Amplify JWT

Full-Stack Developer

ShopWave

Implemented an end-to-end e-commerce checkout flow with payment gateway integration and built a product catalog with search, filtering, and order tracking. Designed scalable backend architecture with JWT authentication, added analytics/crash monitoring, and deployed Dockerized services to AWS.

React Native Redux styled components NestJS PostgreSQL Firebase AWS JWT

Senior React Native Developer

MedSync

Built a patient appointment booking system with calendar synchronization and implemented secure messaging between patients and doctors. Defined and optimized a GraphQL schema with Apollo, improved app stability by reducing runtime errors, and collaborated with backend/DevOps to streamline releases.