About the role
We're looking for a Senior Full-Stack Engineer with a strong Flutter background who can own features end to end: the mobile app, the backend behind it, and the web dashboard around it. Work in an international team with engineers from Ukraine and specialists on the client side.<\/p>\n
What you'll do<\/p>\n
Build and maintain high-quality cross-platform apps for iOS and Android with Flutter
Design, build, and maintain backend services, APIs, and databases
Develop dashboards, admin panels, and client-facing web apps
Integrate native Android and iOS features
Review code and set engineering best practices<\/p>\n
TECHNICAL SKILLS:<\/p>\n
Mobile (Flutter): Dart, Flutter, Bloc, RxDart, Streams, Freezed, json_serializable, Platform Channels
Native Android: Kotlin, Java, Jetpack, MVVM\/MVP\/MVC, Retrofit 2, RxJava2, Room, Realm, OrmLite
Native iOS: Swift, CoreLocation
Mobile features: Material Design, Google Maps, geolocation, background tasks, Bluetooth, NFC, QR scanning, deep links
Push notifications: Firebase Cloud Messaging, APNs, OneSignal
Backend: Node.js, TypeScript, NestJS, Express, REST, GraphQL (Apollo), WebSockets
Web frontend: React, Next.js, TypeScript, Redux Toolkit, Zustand, React Query<\/p>\n
General<\/p>\n
5+ years of commercial software development experience
Experience delivering products across mobile, backend, and web
Upper-Intermediate English or higher
LLM integration experience (OpenAI, Anthropic, LangChain) or RAG
Daily use of AI-assisted development tools (Cursor, Claude Code)<\/p>\n
Mobile (Flutter)<\/p>\n
4+ years with Flutter and Dart, with apps you've shipped to the App Store and Google Play
Strong experience with Bloc and reactive programming (Streams, RxDart)
Clean Architecture and code generation (Freezed, json_serializable)
Native integration through Platform Channels, with solid Kotlin or Swift knowledge
Push notifications (FCM, APNs, or OneSignal), deep links, and background tasks
Local storage and offline-first apps (SQLite, Drift, or similar)
Unit, widget, and integration testing<\/p>\n
Backend<\/p>\n
3+ years building backend services with Node.js and TypeScript (NestJS or Express)
API design with REST and GraphQL, plus real-time communication through WebSockets
Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
Redis for caching, pub\/sub, and queues
Experience with NoSQL databases (Firestore, DynamoDB, or MongoDB)
Authentication and authorization (JWT, OAuth, Firebase Auth, or Cognito)
Background jobs and message queues (SQS, Kafka, BullMQ, or similar)
Backend testing with Jest or similar<\/p>\n
Frontend (web)<\/p>\n
2+ years with React and TypeScript
Next.js (SSR, routing, API routes)
State and data management (Redux Toolkit, Zustand, or React Query)
Responsive, mobile-first layouts
Building dashboards, including real-time data visualization<\/p>\n
Nice to have<\/p>\n
AWS or Firebase\/Google Cloud
Docker and CI\/CD (GitHub Actions, Codemagic, or Fastlane)
Background location tracking, geolocation services, and Google Maps
Bluetooth, NFC, or QR scanning integrations
A background in native Android development (Kotlin, Jetpack)
Microservice architecture and high-load systems (millions of records, zero-downtime migrations)
Infrastructure as Code (CloudFormation, Terraform)
Dart on the backend (Serverpod, Dart Frog)<\/p>\n
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