MuhammadSabbirHossain

Built a niche social platform addressing digital isolation among elderly users. Uses NID-based identity verification to ensure authenticity, face recognition to reconnect people from their past, and ML-driven recommendations to surface relevant content. Supports real-time chat and multi-language accessibility — designed with empathy, not just engineering.

End-to-end fleet management system integrating hardware and software. A Raspberry Pi runs YOLOv5 in real time to count passengers through a camera, eliminating the need for manual ticketing. GPS tracking, automated operations, and live analytics are streamed to a Django backend for centralized monitoring and management. The project combines custom IoT hardware, computer vision, and a full-stack web architecture.

Production backend powering the UIU Competitive Programming Community's online judge. Integrates Judge0 for sandboxed multi-language code execution, Redis for async submission queuing between services, and Docker for containerized deployment. Built to handle concurrent contest submissions reliably — used by real students at UIU.

Designed and implemented a microservices architecture separating library operations and university finance into independent, communicating services. Uses gRPC for low-latency inter-service calls and REST for external-facing APIs — demonstrating a real understanding of when to use each protocol. JWT-secured, with EF Core handling data access in .NET.

Full-stack live support chat system built for scenarios where multiple agents handle incoming visitor conversations. Redis-backed queue automatically assigns visitors to available agents, preventing double-handling. WebSocket connections via Django Channels keep messages instant. Deployed with Docker for consistent environments across dev and production.

Peer-to-peer crowdfunding platform built for university students to raise funds and apply for micro-loans. Lenders can bid competitively on loan requests, creating a transparent auction-based interest system. Includes payment integration, investment portfolio tracking per user, and a review system to build trust across the community.

Service marketplace connecting caregivers with families in need of support. Caregivers can be scheduled, approved, and tracked through an admin dashboard. Includes NLP-powered search with autocomplete for fast service discovery, an integrated chatbot for user assistance, and role-based access control separating admin, caregiver, and client views.