Brand and Business Systems Architect Masum Billah
Open to the right opportunity

One person, the whole stack.
From the server to the sale.

I am Masum Billah. Everywhere online I go by billahdotdev, because there are a thousand Masum Billahs and only one of me.

I write the code, run the ads, build the AI that answers your customers, and keep the servers all of it runs on. Nine years of doing this for businesses in Bangladesh and abroad.

Show me what you solve Talk to me on WhatsApp

Usually replies within a few hours, Dhaka time.

9+
years building for the web
5
clients named here, with permission
3 years
my own servers, no rebuild
99
PageSpeed on mobile, run it yourself
Check me

Nothing here is a claim you have to take on faith.

Anyone can call themselves an expert. It costs nothing to say. So every claim on this page has something behind it you can open right now.

  • Developer This page scores 99 on mobile, with 100 for accessibility, best practices and SEO. No framework, one font file, 60 KB in total. Run PageSpeed on it
  • Marketer Digitalizen, where the tracking I sell is already running. Open the agency
  • AI A Bengali sales agent on a live number. It reads voice notes, follows a question split across four messages, hands over to a human when it should, and admits when it does not know. Message it
  • Infrastructure Five services, my hardware, three years without a rebuild. Ask me about it
What I can hand you

What usually leaks, and what I hand over to stop it.

Nobody pays for a portfolio. They pay because something in the business is quietly losing money every week. These are the leaks I get called about most, though the list grows whenever a client brings me a new one.

A storefront that actually closes

Your site looks fine and sells almost nothing. Visitors arrive, scroll, and leave without a reason to stay.

I build storefronts and landing pages where every section has one job. They load before patience runs out, they carry proper tracking from day one, and they are written so search engines and AI assistants can both quote them.

Orree orree.bd

Traditional food, modern fusion positioning, a storefront built to convert.

orree.bd Orree website
Open Orree
Travel Guru travelguru.bd

Itinerary discovery with the friction taken out of high ticket booking.

travelguru.bd Travel Guru website

Link and a full case study are coming shortly. Ask me and I will walk you through it.

Billion billion.bd

A venture platform for structuring and scaling serious business concepts.

billion.bd Billion website

Link and a full case study are coming shortly. Ask me and I will walk you through it.

Auora auora.bd

Human behaviour, personal transformation and the habits behind growth.

auora.bd Auora website

Link and a full case study are coming shortly. Ask me and I will walk you through it.

Velore velore.bd

Five ad platforms fed from one deduplicated event stream.

velore.bd Velore website

Link and a full case study are coming shortly. Ask me and I will walk you through it.

  • Web build
  • Tracking
  • Ads
  • SEO · AEO · GEO

Meta Strick, a list of people already raising their hand

Your future customers are commenting on ads right now, on your page and on your competitors'. You can see them. You cannot reach them.

Meta Strick turns that activity into a working list of warm prospects, sorted and ready to contact, instead of a screenshot you scroll through by hand. What used to be an afternoon becomes a file.

It runs quietly for my own clients rather than as a public tool, so there is no signup page to send you to. Ask me and I will show you a live run on a real ad account.

Ask for a walkthrough
  • Product
  • Lead generation
  • Automation

Ad reporting you can actually trust

Roughly a third of your conversions never reach your ad account. The numbers still look confident, they are simply wrong, and every decision after that is built on them.

I install one measurement layer that sends each event twice, from the browser and from the server, matched by a shared identifier so nothing is double counted. Your ad platform finally optimises against what really happened, and your reports stop disagreeing with your bank.

Running live on Digitalizen and on Velore, where five ad platforms are fed from a single deduplicated stream.

See it running
  • Marketing
  • Server side events
  • Meta CAPI
  • GA4

A server that is actually yours

Every tool you rent bills per seat, per run, per message. It is cheap while you are small and brutal the month it works. Then the price changes and you have no say in it.

I set up a private server and move the whole stack onto it. Deployment, automations, the AI layer, the support inbox, the database. You own the machine, the costs stop moving, and nothing you built can be taken away by someone else's pricing page.

Mine has been running for three years on four cores and twenty four gigabytes. Coolify deploys, n8n automates, Dify carries the AI, Chatwoot catches the handover, Postgres and Redis hold the state.

Ask what it would cost you
  • Infrastructure
  • Self hosted
  • Backups
  • Monitoring
More tools, built for the same reason

Templates, checklists and small products that solve one specific problem each.

Visit the store
Tools

What I reach for

This is not a wall of logos. These are the things I have shipped with often enough to know exactly where each one breaks.

Front
Vanilla JS
React
Vite
Native CSS
Edge
Cloudflare Workers
Static assets
Nonce CSP
Data
Postgres
Meta Conversions API
GA4
Google Ads
AI
Dify
n8n
Gemini
WhatsApp Cloud API
Server
Oracle Cloud
Coolify
Chatwoot
Redis
Background

How I learned all this

Masum Billah

I am mostly self taught, and given the choice I would take that road again. Almost everything I know came from building something that did not work, then staying up until I found out why.

That is hard to verify from the outside, so here is the part that is on paper. Full stack development, certified by IAC and BUET. AI and automation from the National Information Society Agency in South Korea. Marketing from AMA in the Philippines. Web development at the University of Helsinki.

The certificates confirm it. The work is what actually proves it.

Download my resume

Contact

Tell me what you are trying to build

The quickest way to reach me is WhatsApp. If you would rather write it out properly, the form works too, and it lands on my phone either way.

Or message me directly on WhatsApp at +880 1711 992558, or write to masum@billah.dev. I read everything, and I answer most things within a day. 

/**
 * @identity  Masum Billah | @billahdotdev
 * @role      Brand & Business Systems Architect [2026]
 * @strategy  Code + AI + Growth Marketing + Cloud Infra
 */

export const Digitalizen = {
  origin: "billah.dev",
  ping:   "masum@billah.dev",
  nodes:  { Dhaka: "01711992558", Manila: "09156015542" },
  status: "Systems automated. Revenue scaling."
};
My card, in the only format I actually enjoy reading. Save to contacts