Development and Maintenance of Company Software ProductsResponsibilities:① Complete Overhaul of the Mobile Application for Managing Ventilation Equipment (React Native, TypeScript): • Developed a new application architecture following FSD principles. • Migrated the application from class-based to functional components and from JavaScript to TypeScript. • Refined and optimized application logic. • Implemented adaptive layouts according to Figma designs. • Published the application on Google Play and the App Store.Key Features: • Multi-theme dark mode interface. • Control equipment over the internet and local network (Zeroconf + NetInfo).② Backend Update for the Application: • Upgraded the application from Node.js v10 to Node.js v16. • Updated logic, added new routes. • Documented the API using Swagger and YAML. • Added a logger for request-response logging. • Configured database backups (MongoDB, Redis).③ Integration of Equipment into the Yandex Smart Home Ecosystem: • Adapter API Development: • Authorization (JWT Tokens): Authorization • Device list retrieval for management (MongoDB + Redis). • Device state reading (Redis). • Device control (Socket.IO). • Configured Nginx routing. • Developed and configured the Alice skill. • Developed a testing environment, provided support, and released updates.④ Development of a Firmware Update Server for Devices: • Implemented authorization (JWT Tokens). • Handled update requests, checked for new versions, and provided the update file structure (Node.js, Express, fs).⑤ Development of a Status Server for 1C Integration: • Implemented user authorization (JWT). • Provided information on: • Number of registered users (MongoDB). • Users and their devices, including device statuses (MongoDB + Redis).

Developed both the server-side and client-side of an application for selecting ventilation diffusers and air humidifiers.Frontend SPA: React + ReduxBackend: Express + Node.jsDatabase: PostgreSQLBuild Tool: Webpack