You will get a multi-tenant agency CRM with RBAC, sales pipeline & cold email automation
Rising Talent
Rising Talent
Project details
This is a production-grade agency operating system, not a template. It runs the full client lifecycle in one app: capture a lead, move it through your sales pipeline, and convert the won deal into a managed client, all under one organization hierarchy.
What sets it apart is the engineering underneath. The role-based access engine calculates permissions live on every request, where a DENY always wins, and admins cannot grant rights they do not hold themselves. Creating a lead writes the company, contact, and lead in one atomic transaction, so your data is never left half-written. The built-in cold email engine runs timed followup sequences that stop the instant a prospect replies, tracks opens and clicks, and auto-suppresses bounces and complaints. Every change is logged in an append-only audit trail.
I build with Next.js, TypeScript, PostgreSQL, and Prisma, with security checked at the server boundary so nothing trusts the client. You get clean, documented, deployable source code that your team can actually grow with.
What sets it apart is the engineering underneath. The role-based access engine calculates permissions live on every request, where a DENY always wins, and admins cannot grant rights they do not hold themselves. Creating a lead writes the company, contact, and lead in one atomic transaction, so your data is never left half-written. The built-in cold email engine runs timed followup sequences that stop the instant a prospect replies, tracks opens and clicks, and auto-suppresses bounces and complaints. Every change is logged in an append-only audit trail.
I build with Next.js, TypeScript, PostgreSQL, and Prisma, with security checked at the server boundary so nothing trusts the client. You get clean, documented, deployable source code that your team can actually grow with.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$199
|
Standard
$399
|
Advanced
$699
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 30 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 8 | 14 | 20 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Followup Sequence Automation
(+ 5 Days)
+$149Frequently asked questions
About Fuyad Hasan
Backend & Integrations Engineer | Stripe, Automation & Node.js
Gaibandha, Bangladesh - 10:48 am local time
Most teams don't need another "full-stack developer." They need someone who owns the backend and makes the integrations work: payments that don't break, automations that run without babysitting, and infrastructure that stays up.
That's what I do. 3+ years, Node.js and TypeScript, focused on backend architecture and system design.
Recent work:
- Built a multi-tenant CRM handling 50,000+ leads with role-based access and a cold-email automation engine
- Shipped an HR platform supporting 120+ employees with AI-powered support features
- Integrated Stripe and Stripe Connect for subscription billing and multi-party payments
- Set up automated lead-capture-to-CRM workflows that run on their own
- Deployed and maintained production apps on VPS with Docker, PM2, and Cloudflare
My core stack:
- Backend: Node.js, Express, TypeScript, PostgreSQL, MongoDB, Prisma
- Payments: Stripe, Stripe Connect
- Automation: n8n, custom API integrations, BullMQ, Redis
- Infrastructure: Docker, VPS deployment, Nginx, Cloudflare
- AI: Gemini and OpenAI integrations for real product features
I care about clean code, clear communication, and building things that keep working after I hand them off.
If you've got a backend to build, a payment flow to fix, or a manual process that should be automated, send me a message and tell me what you're dealing with. I'll tell you honestly whether I'm the right fit.
Steps for completing your project
After purchasing the project, send requirements so Fuyad Hasan can start the project.
Delivery time starts when Fuyad Hasan receives requirements from you.
Fuyad Hasan works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery and scope lock
We confirm your org structure, roles, and required modules, then lock a clear scope so nothing is missed later.
Database and access control setup
I design the multi-tenant schema and build the role-based permission engine so every user only sees what they should.