# SaaS & web app development

> SaaS products and custom web apps of any kind: accounts, roles, billing, dashboards, automation and an API, built to grow.

Offered by Zubayer al Hasan, Full-stack developer (Dhaka, Bangladesh). Contact: hello@zhasan.me · https://zhasan.me/contact

- Any workflow, any industry
- Subscription billing
- Roles, teams & data isolation
- Automated tests from day one

If your business runs on spreadsheets, email threads or software that almost fits, a web app built around your workflow can save hours every week. If you're launching a product, I build it so it can grow from the first customer to the thousandth.

## What I can build

- **SaaS products:** sign-up, plans and subscriptions
- **CRMs and sales pipelines:** leads, deals, follow-ups and reports
- **Booking and scheduling systems:** for clinics, salons, rentals, classes or services
- **Client and member portals:** documents, invoices, requests and messages in one place
- **Project, task and team tools:** roles, approvals and activity logs
- **Inventory, orders and point of sale:** the back office behind a shop or warehouse
- **Learning platforms:** courses, lessons, quizzes and progress tracking
- **Marketplaces and directories:** listings, search, reviews and enquiries
- **Reporting dashboards:** your data in charts, tables and exports
- **Internal tools:** replace manual work, with AI features where they help

## The parts that make it work

- Sign-up, login, teams and invitations
- Roles and permissions checked on the server, and each customer's data kept separate
- Subscriptions, plan limits and invoices with Stripe, Chargebee or Paddle
- Background jobs, scheduled tasks, email and notifications
- File uploads, imports and exports
- A documented REST API and webhooks for your customers or partners
- An admin panel to run it all, and automated tests from day one

## How we work

We start with a short planning phase: the roles, the main workflows and what must be true before launch. Then I ship in small, demoable steps to a staging site you can click through every week.

## Related work

- [TDG Property Marketplace](https://zhasan.me/work/tdg-property-marketplace): Phuket real-estate marketplace with map search, lead tracking and an AI landing-page builder.

## Frequently asked questions

### What kinds of web apps can you build?

SaaS products, CRMs, booking systems, client portals, project tools, inventory and order systems, learning platforms, marketplaces, dashboards and internal tools: anything that runs in a browser and needs accounts, data and workflows.

### How long does a SaaS MVP take?

A focused MVP with accounts, one core workflow, billing and an admin usually takes 6–10 weeks. A short planning phase first makes the estimate firm.

### Which stack do you use?

Laravel with Filament when you want speed and simple hosting, or Next.js with a Node.js API when the product is very interactive. Both use PostgreSQL or MySQL.

### Will I own the code?

Yes. The code lives in your own GitHub repository from the first day.