All 72 projects

BeSends — omnichannel messaging SaaS

Own product (PiTech)

A public SaaS that sends WhatsApp, SMS and email from one panel and one API — built, hosted, billed and operated end to end.

pilotOTP — one-time-code API

BeSends

A prepaid OTP service: send a code with one call and it tries WhatsApp, then SMS, then email until one channel accepts.

Paylume — payment gateway for developers

Own product

An aggregator-model payment gateway SaaS: merchants integrate once and accept crypto and card payments through gateways the platform manages.

Multi-tenant competitive exam platform

One backend that powers unlimited branded exam-prep apps — BCS first, then bank, NTRCA, admission and IELTS — each with its own apps, domain and plans.

Portvault — team SSH workspace

Own product

A self-hostable, cross-platform alternative to commercial SSH clients for teams, with paid plans and shared vaults.

Housing society management system

Members, monthly dues, notices, complaints and accounts for a residential society.

Dynamic form builder for React

Forms defined as JSON — fields, validation and conditional logic rendered at runtime.

Custom Tumblr themes

Where it started: hand-edited HTML, CSS and JavaScript themes for Tumblr blogs.

Academic Services Portal — examination ERP

Private university, Bangladesh

The university's examination ERP and public home page: thirteen student services and ten role-based portals on a Rust backend over Oracle.

Admin portal redesign and design system

Private university, Bangladesh

A full UI rebuild of a 64-route admin panel to a token-based editorial design system, without touching a single API contract.

Finance & HR ERP

Private university, Bangladesh

Accounts, payroll, leave, provident fund, loans with auto-pay, exam billing, assets, bank advice, cheques and tax — as switchable modules inside the existing admin portal.

Examiner-blind QR answer-script system

Private university, Bangladesh

Anonymous QR topsheets so examiners mark scripts by serial number without knowing whose script it is — from admit card to result.

University public website

Private university, Bangladesh

A Bangla-first, statically generated university site with zero-downtime deploys and automatic rollback.

Bulk account & mailbox provisioning

Private university, Bangladesh

A script that created department-chair portal accounts and matching mailboxes for every college department, with plan, run, rebuild and undo modes.

Examination office backend & portals

Public university, Bangladesh

The Rust backend and portals behind a large university examination office — students, teachers, management and payments.

Teacher Service Portal

Public university, Bangladesh

Teachers register, get verified by their principal via QR, take exam duties and get paid straight to their bank account.

Convocation portal

Public university, Bangladesh

A standalone convocation system with its own admin, roles and database, synced backend-to-backend with the examination system.

Academic operations portal for affiliated colleges

Public university, Bangladesh

A ten-module academic operations system, including online form fill-up for a network of affiliated colleges.

Certificate printing engine

Public university, Bangladesh

Token-based certificate templates rendered for landscape print, with blank-template systems for every certificate type.

Result, marksheet & transcript systems

Public university, Bangladesh

Result processing and marksheet apps with QR-verified transcripts — modernised from PHP 5.6 to containers on PHP 7.4.

Exam office correspondence system

Public university, Bangladesh

Official letters, spreadsheets and mail for the examination office, generated as PDFs and sent from one system.

Faculty-topper merit reports

Public university, Bangladesh

Faculty-wise topper reports prepared in the regulator's submission format from examination data.

Intelligent school management system

School administration in one place — admissions, classes, fees, results and notifications to guardians.

University result system

Public university, Bangladesh

The mission-critical result platform for 40,000+ students — rebuilt queries took result processing from 48 hours to 4.

Nilkhet Express — print & bookshop platform

Own business

Digitises Dhaka's Nilkhet print market: upload a file, get a price, and the print is delivered to your door — plus a live bookshop and a corporate desk.

Line-level page builder CMS

Nilkhet Express

An admin ‘developer’ page where every line of the landing page — text, size, position, animation, background video — can be rebuilt without code.

ClickCart — network-commerce platform

Icon Marketing

A MERN commerce platform with member trees, matching income, wallets, top-ups and serialised inventory — built and deployed for a long-term client.

Orvia — beauty e-commerce store

Own business

An online store for imported skincare, fragrance and gourmet products, delivering across Bangladesh.

Naturo — e-commerce with POS & warehouse

Naturo (freelance client)

A full-stack MERN marketplace where the online store, the in-shop POS and the warehouse share one live inventory.

High-performance multi-vendor marketplace

A PHP marketplace where many vendors sell under one storefront with commission and payouts.

Student & teacher mobile app

Private university, Bangladesh

A production React Native app that carries every feature of the web student portal, plus device control, feature flags and push.

ClickCart mobile admin app

Icon Marketing

A React Native admin app at full parity with the web panel — push alerts, camera scanner, member timelines and tree view.

E-commerce mobile app

A React Native shopping app with catalogue, cart, checkout and order tracking.

QuickScan

PiTech

A fast QR and barcode scanner for Android — no ads, privacy-friendly. Live on Google Play.

Offline Keyboard

PiTech

A keyboard that never touches the network — typing stays on the device. Live on Google Play.

Spam Blocker: Call & SMS

PiTech

Blocks spam calls and SMS with user rules. Live on Google Play.

Nilkhet Express Admin

Nilkhet Express

The operations app for the print business — orders, status updates and delivery on the go. Live on Google Play.

Manual Pro Camera

PiTech

A manual-control camera app built on a respected GPL open-source camera, rebranded with full attribution and a signed CI release pipeline.

PiTech open-source Android suite

PiTech

A repeatable pipeline for publishing useful, ad-free, privacy-friendly apps: licence check, rebrand, privacy policy, store assets, signed build, review.

Student portal mobile app

Public university, Bangladesh

A cross-platform app so students get notices, results and fees on their phone instead of the desktop website.

PiTech Focus

PiTech

A distraction-free focus timer and app blocker in internal testing.

AI photo validation & face comparison

Private university, Bangladesh

Browser-side checks on student and teacher profile photos, with gates the admin can switch on or off, and a restricted face-comparison view.

Social scheduling & automated Reel pipeline

PiTech brands

Self-hosted social scheduling for four brands, plus a pipeline that turns designs into branded vertical videos automatically.

WhatsApp community AI bot

An assistant that chats with a WhatsApp group, posts updates and reads Facebook Page comments and inbox in one workflow.

Enterprise RAG knowledge base

Logistics firm (consulting)

Secure document intelligence: staff ask questions in plain language and get answers from 10,000+ PDF contracts, with the data kept in a private network.

Telegram AI agents with model fallback

Always-on AI agents reachable from Telegram, running on a VPS and an Intel NUC, that fall back across model providers and local models.

Remote computer-use agent over Telegram

Controls a Mac from Telegram through an MCP computer-use server — local MLX model first, cloud model as fallback.

Local LLM inference & routing

Private AI for teams: local models sized to the hardware, with a gateway that routes between local and cloud models.

AI trading automation with swarm engine

A crypto-futures automation platform where a swarm of agents votes on each signal before an order is placed — run in dry mode against live markets.

RailBot Flash — time-critical automation

A precision browser-automation engine for second-sensitive booking flows, ported from Python to Node.js.

n8n automation hub

Self-hosted workflow automation connecting forms, sheets, messaging and AI models for my businesses and clients.

Self-hosted media & file storage service

Higher-education client

A Cloudinary-style upload, storage and delivery service hosted on the university's own servers.

Proxmox VE cluster on Ceph

Institutional data centre

A two-node Proxmox VE production cluster with Ceph shared storage running about eighteen guests, including the firewall and database.

Bare-metal backup server

Institutional data centre

Rebuilt a bare-metal server as the cluster's backup server: automated backups of every guest, reachable only by the cluster and authorised admins.

Oracle migration & disaster recovery

Higher-education client

Moved a container database from on-premise to cloud with RMAN, kept a nightly standby, and recovered production from block corruption.

Legacy hosting panel → containerised VM

Higher-education client

Migrated a fleet of PHP apps and 92 databases off an old control-panel server into one container per app behind a reverse proxy.

Cloud architecture for a growing university

Private university, Bangladesh

Frontends at the edge, backend on its own server, database on a private network — built for exam-day traffic spikes.

Raspberry Pi edge hosting server

PiTech

A Raspberry Pi 4B on a public IP running a dozen production websites, queues and automation — proof of how far careful tuning goes.

Zero-downtime CI/CD pipelines

Release-directory deploys with candidate-port health checks and automatic rollback, reused across several products.

Google Workspace & Microsoft 365 tenants

Private university, Bangladesh

Education tenants, domain verification and mail routing for a university domain alongside its own mail server.

On-premise Dell server station

Physical Dell servers running web stacks, hosting panels and VMs — racked, patched, firewalled and monitored.

Automated MongoDB backup system

Scheduled dumps, rotation and off-site copies for MongoDB clusters, with restore drills.

Multi-gateway payment registry with bKash

Private university, Bangladesh

A driver registry that runs many payment gateways at once — bKash, SSLCommerz, Nagad and bank forms — switchable from the admin panel.

PayPal, UddoktaPay & Wise integrations

Checkout and payout integrations for international and local payments, with webhook verification.

Self-hosted Android SMS gateway

PiTech

Turns Android phones into an SMS gateway for OTPs and notifications, with a self-hosted backend and TLS API.

Self-hosted university mail platform

Private university, Bangladesh

Institutional email for the whole university on its own server — hundreds of mailboxes, branded webmail, OTP senders and delivery reporting.

Email health & self-repair module

Private university, Bangladesh

An admin card that probes mail ports, tests each sender's login and repairs mailbox settings through the mail server API — no SSH needed.

WebRTC telehealth platform

Healthcare client (freelance)

HIPAA-compliant video consultations in the browser — peer-to-peer streaming, screen sharing and low-latency signalling.

Incident response for legacy web apps

Found and removed planted web shells and obfuscated backdoors across legacy PHP apps, rotated every secret and redeployed clean.

SEO spam hack remediation

Cleaned an injected SEO-spam campaign from a public results site and recovered its search presence.

AI-assisted security testing lab

A local lab where AI agents run vulnerability scans against my own systems using local models — nothing leaves the machine.

API payload encryption layer

End-to-end encrypted request and response bodies between mobile clients and the API.