You will get a secure multi-tenant B2B SaaS with Next.js and Supabase
Project details
Are you looking to build a secure, enterprise-grade B2B Multi-Tenant SaaS application? You've come to the right place.
Many developers build SaaS products that leak tenant data because of weak database isolation. As an experienced SaaS Architect, I specialize in building highly secure multi-tenant web applications using Next.js and Supabase (PostgreSQL) with strict database-level Row-Level Security (RLS) policies.
Whether you are building a property management portal, legal compliance suite, or custom ERP—I ensure that Tenant A can NEVER access Tenant B's data.
WHAT I DELIVER:
✅ Next.js 15 (App Router, Server Components, SSR)
✅ PostgreSQL Multi-Tenant Database Schema Design
✅ Strict Row-Level Security (RLS) in Supabase
✅ Dynamic Subdomain/Workspace Mapping (e.g., client.platform.com)
✅ Stripe/Mollie B2B Subscription Billing with Webhooks
✅ Role-Based Access Controls (RBAC)
AI-ASSISTED DELIVERY VELOCITY:
I leverage AI-assisted tools (Cursor & Claude Code) to build database schemas and UI boilerplates at 2x market speed. This efficiency allows me to focus 100% on custom business logic, secure auth, and edge-case testing.
Many developers build SaaS products that leak tenant data because of weak database isolation. As an experienced SaaS Architect, I specialize in building highly secure multi-tenant web applications using Next.js and Supabase (PostgreSQL) with strict database-level Row-Level Security (RLS) policies.
Whether you are building a property management portal, legal compliance suite, or custom ERP—I ensure that Tenant A can NEVER access Tenant B's data.
WHAT I DELIVER:
✅ Next.js 15 (App Router, Server Components, SSR)
✅ PostgreSQL Multi-Tenant Database Schema Design
✅ Strict Row-Level Security (RLS) in Supabase
✅ Dynamic Subdomain/Workspace Mapping (e.g., client.platform.com)
✅ Stripe/Mollie B2B Subscription Billing with Webhooks
✅ Role-Based Access Controls (RBAC)
AI-ASSISTED DELIVERY VELOCITY:
I leverage AI-assisted tools (Cursor & Claude Code) to build database schemas and UI boilerplates at 2x market speed. This efficiency allows me to focus 100% on custom business logic, secure auth, and edge-case testing.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$300
|
Standard
$750
|
Advanced
$1,800
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | 3 | 5 | Unlimited |
Number of Pages | 2 | 5 | 15 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $300
Additional Revision
+$50
Additional Page
(+ 2 Days)
+$100
Design Customization
(+ 2 Days)
+$150Frequently asked questions
About Mahmudul
React Developer, SaaS and ERP Solutions Specialist
Chittagong, Bangladesh - 3:35 pm local time
I am a Full-Stack Engineer and SaaS Architect specializing in the React.js and Firebase ecosystem. I focus on writing clean, modular code, optimizing database security rules, and deploying ultra-fast applications.
🚀 Key Project Highlights & Expertise:
• Multi-Tenant SaaS Development: Engineered "Bariwala," a secure property management platform. Built using React and Firebase Firestore, implementing strict document-level security rules to guarantee 100% data isolation across tenants.
• Custom ERP Solutions: Architected a centralized School ERP and Operations Management System, automating complex grading systems, attendance, and student billing cycles.
• Logistics & Fleet Management Portals: Developed the "OVP Shipping" corporate platform, integrating secure multi-role access portals (Admin, Captain, Auditor, Port Agent) and real-time voyage tracking displays.
• Progressive Web Apps (PWA): Experienced in building installable PWAs with offline capabilities, providing a native mobile experience without App Store overhead.
🛠️ Core Tech Stack:
- Frontend: React.js, JavaScript (ES6+), TypeScript, Tailwind CSS, Bootstrap
- Backend & DB: Firebase (Auth, Cloud Firestore, Cloud Functions, Security Rules)
- Deployment & DevOps: Vercel, Git/GitHub, CI/CD pipelines
- Prototyping & Design: Canva Pro, wireframing, UI/UX optimization
⚡ Why Work With Me?
1. Rapid Prototyping: I leverage advanced development workflows (using Cursor AI and automated pipelines) to reduce time-to-market while ensuring flawless system architecture.
2. Data Security First: I strictly implement database security guidelines so your users' sensitive data remains completely isolated and protected.
3. Seamless Communication: I believe in proactive updates, transparent milestones, and regular progress reviews.
Whether you need an MVP for your startup or a fully automated ERP for your enterprise, I am ready to deliver high-quality results.
Let’s hop on a brief call to discuss your project requirements and how we can bring your SaaS idea to life!
Steps for completing your project
After purchasing the project, send requirements so Mahmudul can start the project.
Delivery time starts when Mahmudul receives requirements from you.
Mahmudul works on your project following the steps below.
Revisions may occur after the delivery date.
SaaS Schema & Database Design
I will design the multi-tenant PostgreSQL schema and configure tables in Supabase with initial relationship keys.
Security Hardening with RLS
I will write and apply Row-Level Security (RLS) policies to isolate tenant data at the database layer.