You will get a secure multi-tenant SaaS with row-level security
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Project details
In a multi-tenant SaaS, the whole product is the promise that one customer can never see another customer's data. That promise is not kept in the interface, it is enforced at the database, and getting it wrong is the kind of mistake you find out about at the worst possible time. Building it so access is denied by default and only opened on purpose is the work that matters here. I build exactly this. The Framework is a live multi-tenant SaaS I built on Next.js and Supabase where every table is locked down with row-level security, deny by default, so users only ever reach their own data, enforced at the database and not the interface. On a recent build the client's own review said I flagged risks she had not thought to ask about and that she felt completely confident and protected the whole time. I also built Lisi, a car marketplace serving more than fifty dealerships with separate consumer and dealer apps, so multi-sided access control is familiar ground. Tell me who your tenants are and what each must never see, and I will build the foundation that enforces it properly. You own the accounts, the code and the data.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Security, DesignWhat's included
| Service Tiers |
Starter
$1,500
|
Standard
$3,000
|
Advanced
$5,000
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 40 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Stripe or billing integration
+$1,200
Security review of an existing app
+$1,500Frequently asked questions
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RI
Rachael I.
Jun 27, 2026
Supabase Setup and Deployment
Working with Musawir was a genuinely excellent experience from start to finish. I hired him to connect a Supabase backend to my app, set up the database, wire in authentication, deploy it, and get cross-device sync working, and he delivered cleanly, quickly, and with real professionalism.
He was honest and proactive about scope; he flagged things that were outside the job (rather than quietly padding the work) and pointed out a thoughtful data-handling consideration I hadn't even thought to ask about. That kind of integrity is rare.
I felt completely confident and protected the entire time, and I'll absolutely be hiring him again for the next phases of my project. If you're looking for someone skilled, trustworthy, and easy to work with, you've found him. Highly recommended. 💛
He was honest and proactive about scope; he flagged things that were outside the job (rather than quietly padding the work) and pointed out a thoughtful data-handling consideration I hadn't even thought to ask about. That kind of integrity is rare.
I felt completely confident and protected the entire time, and I'll absolutely be hiring him again for the next phases of my project. If you're looking for someone skilled, trustworthy, and easy to work with, you've found him. Highly recommended. 💛
EA
Emmanuel A.
Jun 20, 2026
Next.js / Supabase Developer — Small Fixed-Scope Fix (Ongoing Potential)
Musawir is Fast and amazing, he said it would be done in few hours and he got it done faster than expected, we would be working together on my upcoming project and I will like to recommend if you need a fast and well learned Fullstack developer
MB
Mike B.
Mar 24, 2026
New website
Musawir was available at all hours, worked hard, and did a great job.
About Musawir
AI-Native Full-Stack Developer | Next.js, Supabase, React, Claude
100%
Job Success
Osogbo, Nigeria - 3:37 am local time
I'm a full-stack AI developer with LLM integration experience, who builds AI-powered products and automation end to end and takes full ownership of the outcome. I help businesses capture leads they're losing, automate the manual work eating their team's time, and ship real web products in weeks instead of months. I proactively catch flawed specs before the build starts and surface better solutions with working prototypes, not meeting requests.
What I've built recently:
⚡ Readiary — a secure, multi-tenant Supabase backend with cross-device sync for a reading-app client, who hired me back for the next phase after I delivered it cleanly and protected her data properly
⚡ Lisi.no — the full-stack platform used by 50+ car dealerships across Norway, with thousands of listings, real-time filtering, and a mobile-first experience
⚡ VoxAnima — a production RAG chatbot grounded in an author's real work, so it answers accurately instead of hallucinating
⚡ The Framework — a secure multi-tenant SaaS for wedding photographers with row-level security on every table
⚡ PostPilot — an AI content SaaS shipped end to end for a US client
⚡ Replyte — my own real-estate speed-to-lead system that answers and qualifies leads automatically
⚡ ETnowe — a US marketplace with React Native apps, plus my own AI proposal-and-research SaaS with an n8n automation pipeline behind it
What I specialize in:
AI-powered SaaS products, full-stack web apps and dashboards, automation workflows, secure multi-tenant backends, RAG and AI chatbots, and AI integrations. I'm strongest on ambiguous problems, early-stage products, and builds that need a developer who can think, build, test, and ship independently.
My stack:
🔹 Frontend: Next.js, React, TypeScript, Tailwind, SCSS
🔹 Backend: Supabase, PostgreSQL, Node.js, AWS
🔹 AI: Claude, OpenAI, Gemini APIs, pgvector, RAG
🔹 Automation: n8n, webhooks
🔹 Daily tools: Claude Code, Cursor, Webflow, Wized
How I work:
We align on the real outcome and a timeline you can hold me to. You get weekly Loom updates during the build, and at launch, a documented, optimized product with 30 days of fixes included.
Send me the brief and I'll come back with how I'd solve it.
Steps for completing your project
After purchasing the project, send requirements so Musawir can start the project.
Delivery time starts when Musawir receives requirements from you.
Musawir works on your project following the steps below.
Revisions may occur after the delivery date.
Model the tenants and access
Before any code we define the tenants and the exact data boundaries, because in multi-tenant SaaS the schema is where security actually lives.
Auth and row-level security
I set up authentication and deny-by-default RLS, so access is enforced at the database and a front-end bug cannot leak one tenant's data.