Full-stack JavaScript / TypeScript Developer

I build practical web and mobile applications with a focus on realtime systems, geolocation, backend architecture, security, and multilingual products.

Frontend: Vue 3, React Native, Expo, TypeScript Backend: Node.js, Express, Socket.IO Database: PostgreSQL DevOps: Docker, GitHub Actions Other: REST APIs, WebSockets, geolocation, authentication, RBAC, i18n

Multi-tenant realtime ambulance dispatch and tracking platform

Built for ambulance operators, drivers and patients with live vehicle tracking and role-based access.

Highlights:

• Realtime location updates with Socket.IO
• PostgreSQL persistence
• Multi-tenant architecture
• Role-based access control
• Secure temporary patient tracking links
• Docker-based deployment
• Database migrations
• Health and readiness checks
• CI and automated backend tests

Stack: Vue 3 · TypeScript · Node.js · Express · PostgreSQL · Socket.IO · Docker

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Earthquake monitoring and emergency information app focused on Almaty

A mobile application that monitors earthquake data and provides emergency-related information using external seismic data sources.

Highlights:

• USGS earthquake data integration
• React Native mobile application
• Backend API with Express
• Telegram notifications
• Rate limiting and admin endpoint protection
• Persistent backend state
• Fallback behavior when backend services are unavailable
• CI with linting and type checking

Stack: React Native · Expo · TypeScript · Node.js · Express

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Kazakh and Russian pronunciation training application

A speech-training application designed to help users practice difficult sounds through interactive exercises.

Highlights:

• Browser Speech Recognition
• Manual fallback when speech recognition is unavailable
• RU / KZ localization
• Progress tracking
• Accessible UI
• Local-first architecture without unnecessary backend complexity

Stack: Vue 3 · TypeScript · Vite · Web Speech API

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I enjoy working on products where engineering decisions matter beyond the UI:

• realtime communication
• reliable backend architecture
• authentication and access control
• privacy and security
• graceful degradation
• geolocation
• multilingual applications
• clean deployment and CI workflows

I prefer building products around real-world problems rather than isolated demo applications.

I'm currently focusing on:

• deeper automated and integration testing
• system design and architecture
• backend reliability
• application security
• scalable realtime systems