Salman Junaed Islam

My Computer Graphics OpenGL project the City View

This is the light version of the POS-Invoice-Manager-

Develops an algorithmic customer retention engine in n8n that scores churn risk from recency, frequency, and spend metrics, dynamically executing personalized Gemini AI win-back email sequences with automated purchase verification loops.

Builds an end-to-end media production pipeline using n8n and Gemini AI to generate structured video scripts, scene images, Google TTS voiceovers, and Creatomate video renders, automatically publishing MP4 files to YouTube via API.

Integrates OpenAI (GPT-4o-mini), Supabase vector storage, and Postgres chat memory within n8n to autonomously analyze internal company policies and deliver highly accurate, hallucination-free support email replies or human-in-the-loop drafts.

Implements a decoupled Model Context Protocol (MCP) architecture in n8n, connecting a Groq-powered AI Agent with memory to an isolated MCP Server fetching real-time weather, hotel, dining, attraction, and currency data.

Builds an event-driven job hunting pipeline utilizing n8n, Apify scrapers, and Groq LLMs (Llama-3.3-70b) to extract real-time LinkedIn job postings, parse key criteria, and archive structured leads into Google Sheets.

Constructs an event-driven n8n ETL pipeline that ingests raw customer spreadsheets, standardizes text/contact fields using custom JavaScript validation, drops duplicate records, and generates batch audit reports in Google Drive.

# Offline Android POS & Invoice Manager **Offline Android POS & Invoice Manager** is a native Android application designed for small retail businesses, service providers, and shops that need a reliable billing and sales management system without depending on an internet connection or cloud server. The application is built with **Kotlin, Jetpack C