You will get a multi-tenant SaaS app with Stripe billing & admin dashboard
Rising Talent
Project details
Launching a SaaS? I build production-ready, multi-tenant SaaS platforms with everything you need to charge customers from day one, not a prototype you'll have to rebuild before launch.
My stack: Next.js, Node.js/NestJS, PostgreSQL, Stripe, and AWS. Built to scale cleanly from your first customer to your thousandth.
What you get:
• Multi-tenant architecture with role-based access control (RBAC)
• Stripe subscription billing — plans, trials, upgrades, and webhooks done right
• Auth, a real admin dashboard, and user/usage analytics
• Scalable cloud deployment (AWS / Vercel), CI/CD, and documentation
I'm a senior engineer with 7+ years in fintech and healthtech (HIPAA / PCI-DSS). I've shipped multi-tenant systems with subscription billing and sub-100ms APIs, the hard parts of SaaS that break later if they're built wrong now.
Perfect for founders launching a new SaaS, or teams adding billing and multi-tenancy to an existing app.
Tell me about your SaaS idea and target launch date, I'll outline the scope, tiers, and timeline to get you live.
My stack: Next.js, Node.js/NestJS, PostgreSQL, Stripe, and AWS. Built to scale cleanly from your first customer to your thousandth.
What you get:
• Multi-tenant architecture with role-based access control (RBAC)
• Stripe subscription billing — plans, trials, upgrades, and webhooks done right
• Auth, a real admin dashboard, and user/usage analytics
• Scalable cloud deployment (AWS / Vercel), CI/CD, and documentation
I'm a senior engineer with 7+ years in fintech and healthtech (HIPAA / PCI-DSS). I've shipped multi-tenant systems with subscription billing and sub-100ms APIs, the hard parts of SaaS that break later if they're built wrong now.
Perfect for founders launching a new SaaS, or teams adding billing and multi-tenancy to an existing app.
Tell me about your SaaS idea and target launch date, I'll outline the scope, tiers, and timeline to get you live.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$1,500
|
Standard
$3,500
|
Advanced
$7,500
|
|---|---|---|---|
| Delivery Time | 14 days | 28 days | 45 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | |||
Source Code |
Frequently asked questions
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AB
Ameer Hamza Rizwan B.
Jun 24, 2026
Full Stack Developer Needed - AI SaaS
Hashir is an excellent full stack developer. He jumped straight into our AI SaaS platform and shipped new features across Next.js and Node.js, and handled our OpenAI and Claude API integrations cleanly. He also went beyond the scope, while working, he audited our auth flows and caught a critical issue in our Supabase Row Level Security that we missed entirely, then walked us through exactly how to fix it. Communication was fast and clear, the code was well-documented and easy to hand off, and he delivered exactly what we scoped. And beyond full-stack work, he's genuinely strong at AI automation too. Highly recommended!
NH
Nav H.
Jun 11, 2026
Process to use IA to convert files math and latex to HTML
Hashir helped me develop a system that makes effective use of AI through well-thought-out recommendations. He consistently delivers high-quality work, carrying out thorough research beforehand to ensure that nothing is overlooked and that solutions are successfully implemented all the way through to the final result.
RD
Rishabh D.
Apr 30, 2022
React Expert
he is higly experienced, I have shaed him my projects with lot of bugs and additional functionality he has done all the things in very less time and I will highly recommend him for React, HTML, CSS, Javascript, material UI, bootstrap and redux, node js he is great with all this skills
About Hashir
Full Stack Developer | AI Automation | SaaS, Agents, RAG, Next.js, AWS
100%
Job Success
Lahore, Pakistan - 9:24 am local time
The gap I fill: most "AI developers" stop at an API call, and most automation freelancers can't ship production code. I do both, which is what real AI automation takes.
Across 20+ products in fintech, edtech, and healthtech (HIPAA, PCI-DSS), I've led engineering teams and shipped systems that hold up under real traffic. Top Rated on Upwork.
On a recent AI-SaaS build, I caught a critical Supabase Row-Level-Security hole the team had missed, outside my scope, and showed them the fix. That instinct to audit, not just code, is what you're hiring.
WHAT I BUILD
- AI Automation & Agents, LangChain / LangGraph multi-agent and tool-calling workflows, RAG pipelines (pgvector, Pinecone), and n8n / Make orchestration with branching, error handling, and human-in-the-loop. Plus custom MCP servers so AI works securely with your tools and data.
- Full-Stack SaaS: Multi-tenant Next.js / NestJS / Node.js / Python products with Stripe billing, auth, admin dashboards, and analytics. Built end to end.
- AI-Powered Ops: CRM and workflow automation (HubSpot, Salesforce, GoHighLevel) for lead enrichment, follow-ups, and pipeline automation.
CORE STACK
Next.js · React · TypeScript · Tailwind · Node.js · NestJS · Python · FastAPI · PostgreSQL · Supabase · MongoDB · AWS · Docker · OpenAI · Claude · LangChain · LangGraph · RAG · MCP · n8n · Stripe
RESULTS CLIENTS GET
- Re-architected a US bank's auth layer to OAuth 2.0 / PKCE
- Built a multi-tenant RAG system (hybrid BM25 + dense retrieval) on real data
- Cut cloud spend 35% and lifted concurrent users 50%
- Shipped 40% faster with CI/CD and Infrastructure-as-Code
HOW I WORK
I scope before I build: free 20-min discovery call → architecture doc → phased build with milestones → handoff with full documentation. After that, proactive updates, clean modular code, and support that doesn't vanish at launch.
You get one person who's both an AI-automation architect and a senior Full Stack Developer production code, LLM orchestration that holds together, and documentation thorough enough that your team is never stuck depending on me.
Send me two or three sentences about the workflow or product costing you the most time. I usually reply within a few hours, and most projects start within 48.
Keywords
AI Automation · AI Agents · LangChain · RAG · n8n · MCP · Full Stack Developer · SaaS Development · Multi-Tenant SaaS · Next.js · Node.js · Python · OpenAI · Claude · Stripe · AWS
Steps for completing your project
After purchasing the project, send requirements so Hashir can start the project.
Delivery time starts when Hashir receives requirements from you.
Hashir works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Scope Lock
Kickoff to confirm goals, users, feature set, and billing model. I deliver a scope document, milestones, and timeline for your approval before development starts.
Architecture & Multi-Tenant Setup
I set up the repo, stack (Next.js, NestJS), a multi-tenant data model, role-based access control, and dev/prod environments, and share an architecture plan.