You will get Custom SaaS Product & MVP Development | SAAS | SAAS Design | SAAS Developer
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Project details
Launch Your Scalable AI Powered SaaS MVP Fast with expert development using Langchain, Python Django, React.js/Next.js, Tailwind CSS, Node.js (Express), FastAPI, or Laravel.
I build fully responsive web apps with PostgreSQL, MySQL, or MongoDB (for NoSQL needs). Get secure JWT, OAuth2, or Firebase Auth login systems, real-time REST/GraphQL APIs, and features like admin dashboards, user roles, and scalable, modular codebases. I deploy to Vercel, Heroku, or Railway for lightning-fast launches, with optional CI/CD pipelines via GitHub Actions.
Perfect for founders needing a clean, fast MVP in 10–20 business days. Mobile-ready, API-integrated, and optimized for growth.
Kindly send me a message before placing an order to discuss the scope in detail!
I build fully responsive web apps with PostgreSQL, MySQL, or MongoDB (for NoSQL needs). Get secure JWT, OAuth2, or Firebase Auth login systems, real-time REST/GraphQL APIs, and features like admin dashboards, user roles, and scalable, modular codebases. I deploy to Vercel, Heroku, or Railway for lightning-fast launches, with optional CI/CD pipelines via GitHub Actions.
Perfect for founders needing a clean, fast MVP in 10–20 business days. Mobile-ready, API-integrated, and optimized for growth.
Kindly send me a message before placing an order to discuss the scope in detail!
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, W3C Markup Validation ServiceWhat's included $99
These options are included with the project scope.
$99
- Delivery Time 2 days
- Number of Revisions 1
- Number of Pages 1
- Design Customization
- Content Upload
- Responsive Design
- Source Code
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LV
Leticia V.
Jan 23, 2026
Multi-Tenant CRM Backend Development & WhatsApp Bot Integration
I really enjoyed working with Syed on this project. He played a key role in developing and improving the backend, supporting the AI logic, and helping structure the system to move toward a scalable SaaS solution. He was always responsive, proactive, and open to feedback, which made collaboration smooth and efficient.
Syed showed strong technical ownership and commitment, even when we faced external dependencies and blockers. I would gladly work with him again and recommend him for complex AI and backend projects.
Syed showed strong technical ownership and commitment, even when we faced external dependencies and blockers. I would gladly work with him again and recommend him for complex AI and backend projects.
UR
Usman R.
Nov 24, 2025
Full Stack Developer / AI Developer for a SAAS company
Haider delivers the task quickly. We will definitely hire him for further projects.
S.
Shakeeb ..
Jul 31, 2025
Full Stack Developer | React, Python, AWS
It’s been a pleasure working with Syed! He played a key role in developing core parts of our platform - from integrating AI agents and workflows to refining our frontend UI. Their technical skills, problem-solving approach, and responsiveness made a huge difference. Highly recommend for any complex, high-impact projects involving Python, Django, React, or AI!
About Syed Haider
Full-Stack AI Engineer | Multi-Tenant RAG, Agentic Chatbots, SaaS
100%
Job Success
Lahore, Pakistan - 12:40 pm local time
I built my first AI agent 22 months ago. It worked perfectly in testing. Then a caller with a heavy accent asked a question while their dog barked in the background, and the whole thing collapsed.
That project taught me something most AI developers learn too late: the demo is 10% of the work. The other 90% is everything that can go wrong - bad retrieval, API timeouts, users who phrase things fourteen different ways, edge cases nobody warned you about.
Now I only build AI that handles the chaos.
𝗪𝗵𝗮𝘁 𝗜'𝘃𝗲 𝗯𝘂𝗶𝗹𝘁
Papyrus answers research questions across 15,000+ academic papers. Hierarchical chunking, hybrid search with pgvector, Cohere reranking, and cited answers. It says "I don't know" when retrieval confidence is low. Researchers trust it because it doesn't make things up.
Lawbrarian generates legal documents with jurisdiction-aware retrieval. 700+ documents created with proper citations pulled from the right statutes. React frontend, Python backend, pgvector for legal precedent matching.
Multi-tenant RAG chatbots and CRM backends where every tenant's data stays isolated, retrieval is scoped per organisation, and the agent knows which tools it's allowed to call. This is most of my current work.
Stellarcs takes 40+ real estate calls daily. Not test calls - actual leads, live conversations, 92% intent accuracy measured across thousands of interactions. Built on VAPI with ElevenLabs voice, GoHighLevel CRM sync, and Google Calendar booking. It qualifies buyers, handles objections, and hands off to human agents without dropping context.
Stellae handles hotel reception calls - booking inquiries, room availability, guest requests. Retell for voice, n8n workflows for automation, webhook integrations with property management systems.
𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸
I take on multi-tenant RAG systems, agentic chatbots, AI SaaS builds, and Voice AI agents. I'm useful when you're past the "exploring AI" phase and need something deployed. Less useful if you're still figuring out whether AI makes sense - though I'm happy to tell you if it doesn't.
Most fixed-price projects run $2K-25K over 2-6 weeks; hourly work is $50/hr. I don't disappear mid-project, I document everything, and I build with handoff in mind so you're not dependent on me forever.
𝗧𝗲𝗰𝗵 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵
𝗥𝗔𝗚 & 𝗟𝗟𝗠𝘀: LangChain, LangGraph, LlamaIndex, OpenAI, Claude, Gemini, Cohere, pgvector, Qdrant, Pinecone, Elasticsearch
𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Python, FastAPI, Node.js, TypeScript, PostgreSQL, Redis, Supabase
𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React, Next.js, Tailwind CSS
𝗩𝗼𝗶𝗰𝗲 𝗔𝗜: VAPI, Retell, Twilio, Bland, ElevenLabs, OpenAI Whisper, OpenAI TTS, Deepgram
𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: n8n, Make, Zapier, GoHighLevel, HubSpot, Google Calendar, Stripe, WhatsApp Business API
𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁: AWS, GCP, Vercel, Railway, Docker
𝗪𝗵𝗮𝘁 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘀𝗮𝘆
"Syed is excellent to work with. Fast, thorough, and quick to accept feedback. His team is great, and we have loved working with them to create multiple software solutions. Fantastic Upwork contractor."
—Ibrahmiovic, Founder @ Stellae
If any of this sounds relevant, message me with what you're building. I respond within 20 minutes, and I'll tell you honestly whether I'm the right fit - including when I'm not.
Steps for completing your project
After purchasing the project, send requirements so Syed Haider can start the project.
Delivery time starts when Syed Haider receives requirements from you.
Syed Haider works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Requirements Gathering
We’ll define your SaaS idea, features, target users, and tech preferences.
UI/UX Design & Architecture Planning
I’ll create wireframes (if needed) and plan a scalable frontend/backend structure.