Md Sabbirul Islam Khan
Management student building toward Backend & DevOps Engineering, while exploring AI, systems, networking and creative technology.
One app to sell at the counter, sell online, keep your stock and khata, manage your team and see what you made.
POS, online store, inventory, digital khata, baki, invoices, reports, Facebook & Instagram AI replies, delivery and staff roles — one connected system built for 22 kinds of business, from pharmacies and grocery shops to restaurants and turfs.
Management student at Rajshahi College, building backend and DevOps skills through hands-on projects, local AI experiments and documented learning.
Chief Product Manager (CPM) at Aiyaar
All-in-one POS, online store, inventory & digital khata SaaS for Bangladeshi businesses.
BBA in Management
Department of Management, Rajshahi College
Foundation: Hat Gangopara B.M College (HSC GPA 5.00 · Computer Operations)
Rajshahi, Bangladesh
Roots: Bagmara, Rājshāhi, Bangladesh
BST · UTC+6
Backend · AI
FastAPI, Postgres, Docker
Offline LLMs · GPU
Google Local Guide
Google HQ gift recipient
Local Guide since 2017
A flagship learning workspace, systems labs and hardware builds — each with a write-up of what was built, what broke and what changed.
Local-First Learning & Engineering Workspace
Omnidesk BD ingests PDFs, Markdown, text and YouTube transcripts, turns them into a source-linked topic graph, and only marks a topic done once it has been explained, implemented and debugged. A FastAPI + PostgreSQL backend sits behind a React client, with an AI cascade (Gemini free tier → local Ollama → offline heuristic) so the workspace never depends on a paid key or a connection.
Clean desktop workspace with distraction-free modules and focus timer telemetry.
A lightweight, headless automation daemon that sends scheduled due payment reminders and invoice receipts to retail pharmacy clients with zero paid API overhead.
An experimental, fully local AI orchestration layer designed to manage personal tasks, learning workflows, and system automation without cloud dependencies.
Configuring headless GPU rendering pipelines, custom resolutions, and low-latency virtual display buffers on Linux.
A continuous journey from business strategy to systems architecture.
An expandable workspace for ongoing bench tests, hardware circuits, offline AI models, and infrastructure prototypes built along the way.
Measuring token generation speeds and memory fragmentation across quantized 7B/8B GGUF models on dedicated GPU hardware using Ollama.
Engineered a custom high-capacity backup DC supply system with automated relay cutover to keep network nodes and compute rigs online during brownouts.
A modular GNU Bash provisioning suite that configures a fresh Ubuntu installation with dotfiles, developer toolchains, Docker, and kernel sysctl parameters in under 4 minutes.
Recent notes, engineering journals, and experiments from the lab.
My experience contributing as a Google Maps Local Guide and mapping real-world locations.
Repurposing a D-Link router into a lightweight local network storage solution using OpenWrt.
Why I transitioned from attempting to run everything locally to a hybrid cloud/local approach.
Articles, vlogs, sourced tech pulse, browser SaaS tools, simulations, and top 5 playable engineering games.
Zero login required, 100% private, client-side processing for creators, shops, and developers.
Instant client-side edge matting, studio solid/gradient colors, and WebP export.
Bangla & English handwritten/typed ledger notes converted to editable Excel/CSV.
Professional invoices, 80mm cash memos, and bKash QR payment codes in 1 click.
Audit container definitions, catch root execution, and generate hardened builds.
The rest of the story lives on its own pages — pick a chapter.
Open to building, learning and collaborating — on projects, roles and community work. Messages open as a draft in your own email app.
