# Robiul Hossain: Portfolio & Engineering Profile

> Software Engineer focused on scalable, secure, and high-performance systems across backend architecture, distributed systems, and cloud infrastructure.

## Summary
Robiul Hossain (coder7475) is a Software Engineer at Elementix Software Ventures LLC with production experience across backend systems, distributed architectures, cloud platforms, and modern web applications.

## Core Capabilities
- Mobile Engineering: React Native, Expo, Kotlin, Android, offline persistence, native modules.
- Frontend: React, Next.js, Remix, TypeScript, Tailwind CSS, responsive design.
- Backend & Edge: Node.js, Hono, NestJS, FastAPI, Express.js, REST & GraphQL APIs.
- Databases & Storage: PostgreSQL, Cloudflare KV, Redis, MongoDB, Drizzle ORM.
- Cloud & DevOps: Cloudflare Workers & Pages, AWS, Docker, GitHub Actions CI/CD, Terraform.

## Featured Projects
- [FocusGuard](https://github.com/coder7475/focusGuard): Privacy-first focus and sleep discipline app built with React Native, Expo, and custom Kotlin native enforcement engine.
- [GlucoseTracker](https://github.com/coder7475/GlocoseTracker): Daily nutrition and biometric tracking mobile app built with React Native, Expo, TypeScript, and local notifications.
- [E-Commerce Microservices](https://github.com/coder7475/ecommerce_microservices): Distributed event-driven microservices with Kong Gateway, RabbitMQ, Redis, and Keycloak.
- [School Management APIs](https://school-management-apis.vercel.app/api): Enterprise education administration API with NestJS, Drizzle ORM, and PostgreSQL.

## Canonical Links
- Website: https://robiulhossain.com
- Projects: https://robiulhossain.com/projects
- About: https://robiulhossain.com/about
- Experience: https://robiulhossain.com/experiences
- Blog: https://robiulhossain.com/blog
- Schedule: https://robiulhossain.com/schedule
- Contact: https://robiulhossain.com/contact

## External Profiles
- GitHub: https://github.com/coder7475
- LinkedIn: https://www.linkedin.com/in/robiul7475
- X: https://x.com/robiul7475
- Dev.to: https://dev.to/coder7475
- YouTube: https://www.youtube.com/@RobiulHossain-f2k