Stellar Burger – Scalable SPA Architecture with Redux & Real-Time Data (Practicum)
February 2026 - April 2026
- Scalable State Architecture: Architected a scalable client-side state management system using Redux Toolkit with domain-driven slice separation (ingredients, burgerConstructor, orders, user, feed), enabling predictable state transitions and maintainable code boundaries.
- Advanced Asynchronous Data Flow: Designed a robust async data layer using createAsyncThunk and Redux Thunk middleware to orchestrate API communication, request lifecycle handling (pending/fulfilled/rejected), and centralized error management.
- Authentication & Security Layer: Implemented a secure token-based authentication mechanism with access and refresh tokens, including automatic token renewal via fetchWithRefresh to maintain session continuity and prevent unauthorized API access.
- Route-Level Access Control: Engineered a protected routing system using React Router with role-based access control patterns and redirect preservation, ensuring seamless user experience when accessing restricted routes.
- Complex UI State Orchestration: Developed sophisticated UI state logic for the burger constructor including constraint enforcement (single bun rule), dynamic ingredient aggregation, real-time price computation, and UI counter synchronization.
- Drag-and-Drop State Synchronization: Implemented deterministic drag-and-drop reordering for burger ingredients with immutable state updates, ensuring consistency between UI state and Redux store.
- Modal-Driven Navigation Architecture: Implemented route-driven modal rendering using the background location pattern in React Router, enabling deep linking for modals while preserving navigation history and UX continuity.
- Real-Time Data Rendering: Integrated dynamic order feeds and user-specific order history with server synchronization, supporting real-time updates and complex data transformation for order status visualization.
- Strict Type System Enforcement: Leveraged TypeScript to enforce strong typing across the entire application stack including Redux store, async thunks, API responses, and component contracts, significantly improving maintainability and runtime reliability.
- Reusable Component System: Designed a composable React component architecture emphasizing separation of concerns, high cohesion, and low coupling, enabling efficient component reuse across application domains.
- API Integration Layer: Built a centralized API abstraction using Fetch API with consistent request handling, token injection, and fault tolerance patterns for resilient client-server communication.
- Comprehensive Testing Strategy: Implemented a multi-layer testing approach including unit tests (Jest) for reducer logic and store initialization, and end-to-end user flow validation using Cypress.
- Deterministic Test Environment: Designed isolated integration tests with API request interception (cy.intercept), mocked backend responses, and synthetic authentication tokens to ensure reproducible test scenarios.
- Engineering Quality Standards: Maintained production-grade code quality through strict TypeScript usage, ESLint enforcement, modular project structure, and adherence to predictable state management patterns.