You will get professional SaaS development, custom SaaS solutions & ongoing support

Hassan B.Status: Offline
Hassan B. Hassan B.
4.9
Top Rated

Let a pro handle the details

Buy Custom Website Programming services from Hassan, priced and ready to go.
Hassan B.Status: Offline
Hassan B. Hassan B.
4.9
Top Rated

Let a pro handle the details

Buy Custom Website Programming services from Hassan, priced and ready to go.

Project details

Looking to build a custom SaaS application that is scalable, secure, and cloud-ready? I specialize in SaaS development — from MVPs to enterprise platforms — delivering software solutions that drive business growth.

Here’s what I offer:

• Custom SaaS Development – Tailored platforms using React, Next.js, Node.js & TypeScript.
• MVP Development – Build a lean minimum viable product to validate your idea quickly.
• Scalable SaaS Platforms – Transform MVPs into full-scale cloud solutions with role-based dashboards.
• SaaS Consulting – Expert guidance on product strategy, monetization, and technical architecture.
• API & Third-Party Integrations – Payment gateways, CRMs, analytics, and cloud hosting.
• Responsive UI/UX – Clean, user-friendly design optimized for all devices.
• Maintenance & Support – Bug fixes, updates, monitoring, and performance optimization.
• White Label SaaS – Fully customizable solutions you can brand and resell.

Whether you’re a startup founder or a business scaling your SaaS, I’ll deliver a reliable, high-performing platform.

Message me to discuss your project today.
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Design
What's included
Service Tiers Starter
$1,000
Standard
$3,000
Advanced
$10,000
Delivery Time 14 days 45 days 70 days
Number of Revisions
35Unlimited
Number of Pages
51224
Design Customization
Content Upload
-
Responsive Design
Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$300 - $2,500
Additional Revision
+$50

Frequently asked questions

4.9
33 reviews
94% Complete
6% Complete
1% Complete
(0)
1% Complete
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1% Complete
(0)

FA

Farouq A.
5.00
Nov 4, 2025
60 minute consultation

BD

Bryan D.
5.00
Aug 23, 2025
Pay for Existing Work

AA

Ali A.
5.00
May 22, 2025
Tiktok app 2 Great work and professional throughout the project.

CH

Colby H.
5.00
Aug 23, 2024
Continuing Updates Between Version 2 and 3

CR

Carter R.
5.00
Mar 28, 2024
Build frontend UI for eLearning platform from Figma wireframe using existing GCP Cloud Functions
Hassan B.Status: Offline

About Hassan

Hassan B.Status: Offline
Senior AI Engineer + Full-Stack | SaaS, React.js, MVPs, Chatbots
100% Job Success
4.9  (33 reviews)
Lahore, Pakistan - 9:40 pm local time
Top Rated Plus engineer. Top 1% on Upwork, 100% Job Success.

I build production-grade SaaS web apps, mobile apps, AI chatbots, and AI agents — end to end. Senior engineer with 8+ years of experience; I've shipped products solo and led small teams when the project needed it.

Most projects are a mix — AI integration, chatbot work, and full-stack web/mobile builds, often all at once.

WHAT I BUILD

▸ AI-powered SaaS platforms Multi-tenant SaaS in Next.js + Postgres/Supabase + Stripe. Auth, billing, dashboards, admin panels. MVP in 2–6 weeks; ongoing for production. Full-stack development, end to end.

▸ Mobile apps with AI React Native + Expo cross-platform. Native iOS/Android when needed. Push, offline sync, deeplinks, subscriptions. AI features integrated cleanly (chat, voice, RAG, OCR).

▸ AI chatbots & RAG systems Custom chatbot development with Claude (Anthropic) or GPT, trained on your docs, PDFs, CRM. Vector search (Pinecone or Supabase pgvector). Citation-backed answers. Delivered on web, WhatsApp, or Slack.

▸ AI agents & automation Multi-step AI agents with LangChain / LangGraph + MCP tool servers. Document processing, lead qualification, research, internal-ops automation. Hooked into Make, n8n, Zapier — automation expert across the major no-code platforms.

▸ AI integration into existing apps Drop Claude, GPT, or Gemini into the app you already have. Connect AI to your existing CRM, dashboards, and tools. The most common project type — fast retrofit, clear ROI.

▸ Voice & calling agents Vapi, Retell, Bland, ElevenLabs, Deepgram, Twilio, LiveKit. Sub-200ms inbound/outbound, CRM dispositioning, appointment booking. Built when the project calls for it.

▸ Chrome extensions & internal tools Manifest V3 extensions, scraping/automation tools, admin dashboards.

▸ Vibe-code cleanup & deployment Lovable, Bolt, Replit, Cursor projects that need real engineering: production refactor, security, deploy pipeline, debugging, scaling.

DEFAULT STACK

Frontend: Next.js, React, React Native, TypeScript, Tailwind Backend: Node.js, Python (FastAPI), Postgres, Supabase, MongoDB, Redis AI: Claude (Sonnet/Opus), GPT-4o/5, Gemini, LangChain, LangGraph, MCP servers, Pinecone, Supabase pgvector Voice: Vapi, Retell, Bland AI, ElevenLabs, Deepgram, Twilio, LiveKit Mobile: React Native, Expo, native iOS/Android Infra: AWS, Vercel, Cloudflare, Docker, GitHub Actions Integrations: Stripe, Twilio, SendGrid, WhatsApp Business API, GoHighLevel, HubSpot, Salesforce

RECENT REAL DEPLOYMENTS (anonymized for NDA)

• Multi-agent recruitment platform — 5 specialized agents, LangGraph orchestrator, Stripe billing. • Healthcare RAG — medical report drafter, citation-backed answers, cut documentation time 90%. • Real-estate voice agent — Vapi + GHL + Twilio. 100+ inbound calls/week, 30+ tours auto-booked. • Warehouse inventory chatbot — millions of rows via RAG, 90% faster analytics for 3PL clients. • Fitness SaaS — multi-tenant React Native + Node + Stripe + AI coaching agent. • Document automation OCR — handwritten manufacturing reports → structured Excel.

HOW I WORK

Spec first. Loom walkthrough before I write code so we agree on scope.
Production-grade output: auth, error handling, deploy pipeline, README, handover.
0–4 hour response time, typically start within 24–48 hours of contract signing.
I write the code myself.

If you want a 15-min demo of working systems before you commit, send a brief and I'll send a Loom of similar past work.

Steps for completing your project

After purchasing the project, send requirements so Hassan can start the project.

Delivery time starts when Hassan receives requirements from you.

Hassan works on your project following the steps below.

Revisions may occur after the delivery date.

Project Discovery & Consultation

We’ll start with a kickoff discussion to understand your SaaS idea, target audience, and business goals. Together, we’ll define requirements, features, and success criteria.

Planning & Architecture

I’ll create a technical roadmap, database design, and system architecture to ensure the SaaS platform is scalable, secure, and future-proof.

Review the work, release payment, and leave feedback to Hassan.