Get a fully functional, AI-powered web application built by London-based full-stack developers — complete with AI model integration, user authentication, and clean source code delivered to your specification.
I Will Build Your AI Web App, Chatbot or SaaS Solution
A proof-of-concept AI web app with core functionality and AI model integration — ideal for validating your idea before committing to full build.
- Proof-of-concept functional web application
- Integration of an AI model into your app (OpenAI GPT or equivalent)
- User authentication (sign-up / log-in flow)
- Clean, commented source code included
- Unlimited revisions within agreed scope
- 30-day post-delivery support via order chat
A fully developed AI web app with chatbot integration and fine-tuned AI model — suited to businesses ready to launch a working product.
- Everything in Starter, at expanded scope
- Conversational AI chatbot integrated into the application
- AI model fine-tuning for your specific use case
- Full-stack build: React.js / Next.js frontend, Node.js or Python backend
- Database integration (MongoDB, MySQL or PostgreSQL)
- Clean, documented source code handed over in full
A complete, cloud-deployed AI SaaS platform with advanced AI features, fine-tuning and full handover — the end-to-end build for serious products.
- Everything in Boost, at full production scope
- AI SaaS platform with dashboard and user management
- Custom GPT application or LangChain / TensorFlow / PyTorch integration
- Cloud deployment configuration on AWS or GCP
- AI workflow automation and integrations
- Full source code handover plus deployment documentation
Request a Custom Offer
Log In to Request a Custom Offer
Create a free account or log in to request a personalised offer from this Zinner.
Log In / RegisterAsk a Pre-Sale Question
Log In to Ask a Question
To reduce platform spam, pre-sale messages can only be sent by logged-in users.
Create a free account or log in to message this Zinner directly.
Log In / RegisterAt a Glance
Key details about this service to help you decide. Generated by Zinn Hub, not the seller.
Value Position
Tech Stack
AI Tooling
Entry Delivery
Post-Launch Support
What You'll Receive
Full Description
You have an idea for an AI-powered product. What you need is a developer who can actually build it — cleanly, securely, and on time. That is exactly what this service delivers.
Zinn Digital is a London-based full-stack development studio specialising in AI-integrated web applications, conversational chatbots, SaaS platforms, and custom AI software. Whether you are validating a concept, extending an existing product with AI, or building a fully featured SaaS platform from scratch, this service is structured to meet you at the right scope and budget.
**What You Can Expect Us to Build**
Every engagement produces a working, deployable application — not a template or a mockup. Depending on your chosen tier, deliverables range from a clean proof-of-concept web app with AI model integration and user authentication, through to a fully featured SaaS platform with a custom AI chatbot, fine-tuned AI model, and cloud deployment on AWS or GCP.
Our development stack covers the full product lifecycle: React.js and Next.js on the frontend, Node.js, Express.js, and Python on the backend, MongoDB, MySQL, and PostgreSQL for data, and OpenAI GPT, LangChain, TensorFlow, and PyTorch for AI and machine learning capabilities.
**AI Solutions We Deliver**
Custom AI chatbots for support, e-commerce, and healthcare use cases. Custom GPT applications and fine-tuning. AI SaaS platforms with dashboards and user management. AI integrations and workflow automation. Cloud-based deployment and hosting configuration.
**How the Process Works**
Once your order is placed, share your project brief, any existing codebase or credentials, and your key requirements via the order chat. We will review the scope, confirm alignment, and begin development. You will receive your source code and a working application on or before the agreed deadline. Post-delivery, we are available via order chat for revisions and any questions.
**Who This Service Is For**
Founders and product teams validating an AI-powered idea. Businesses looking to add ChatGPT or LangChain functionality to an existing application. Startups building a first SaaS product. Developers who need a reliable technical partner to handle the AI integration layer.
**Why Zinn Digital**
Professional AI software developers based in London, England. Scalable and secure coding standards throughout. Comprehensive post-project support included. All tiers include full source code handover — you own everything we build.
Zinner Quality Guarantee
Every Zinner is reviewed and approved before joining the platform.
All services are backed by our quality assurance commitment.
Your payment is protected until you approve the delivered work.
Compare Packages
| Feature | Starter | Boost | Premium |
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 14 days |
| Revisions | unlimited | unlimited | unlimited |
| Proof-of-concept functional web application | ✓ | ✕ | ✕ |
| Integration of an AI model into your app (OpenAI GPT or equivalent) | ✓ | ✕ | ✕ |
| User authentication (sign-up / log-in flow) | ✓ | ✕ | ✕ |
| Clean, commented source code included | ✓ | ✕ | ✕ |
| Unlimited revisions within agreed scope | ✓ | ✕ | ✕ |
| 30-day post-delivery support via order chat | ✓ | ✕ | ✕ |
| Everything in Starter, at expanded scope | ✕ | ✓ | ✕ |
| Conversational AI chatbot integrated into the application | ✕ | ✓ | ✕ |
| AI model fine-tuning for your specific use case | ✕ | ✓ | ✕ |
| Full-stack build: React.js / Next.js frontend, Node.js or Python backend | ✕ | ✓ | ✕ |
| Database integration (MongoDB, MySQL or PostgreSQL) | ✕ | ✓ | ✕ |
| Clean, documented source code handed over in full | ✕ | ✓ | ✕ |
| Everything in Boost, at full production scope | ✕ | ✕ | ✓ |
| AI SaaS platform with dashboard and user management | ✕ | ✕ | ✓ |
| Custom GPT application or LangChain / TensorFlow / PyTorch integration | ✕ | ✕ | ✓ |
| Cloud deployment configuration on AWS or GCP | ✕ | ✕ | ✓ |
| AI workflow automation and integrations | ✕ | ✕ | ✓ |
| Full source code handover plus deployment documentation | ✕ | ✕ | ✓ |
Extra Information
Tools I Use
Perfect For
My Process
Frequently Asked Questions
You receive a working, deployable application and the complete source code — all files, assets, and configuration needed to run and extend the project. Depending on your tier, this also includes deployment documentation and any fine-tuned model assets.
Yes. All tiers include integration of an AI model into an existing application. Simply share your codebase and access credentials via the order chat and we will work within your existing architecture.
We work with OpenAI GPT models, LangChain, TensorFlow, and PyTorch depending on the use case. If you have a preference or an existing API key, let us know in your requirements and we will align the build accordingly.
At minimum, a clear description of what you want the application to do, any existing codebase or login credentials if applicable, and your preferred technology constraints. The more detail you provide upfront, the faster we can move. We will follow up with any questions via the order chat.
All tiers include unlimited revisions within the agreed project scope. Revisions cover changes to the delivered functionality — amendments to features that were not part of the original brief are treated as new scope and may require a separate arrangement.
The Starter tier is designed precisely for this situation. It produces a working proof-of-concept that you can test, demo to stakeholders, or use to define requirements for a larger build. Many clients begin here and upgrade once the concept is validated.
Yes. All tiers include 30 days of post-delivery support via order chat as standard. If you require a longer support window, the Extended Post-Delivery Support add-on extends this to 60 days.
Cross-platform AI mobile app development using Flutter is within our capabilities. If your project requires a mobile application rather than a web app, please describe this clearly in your requirements so we can confirm scope and timeline before work begins.
Customer Reviews
See what our customers say about this Zinn
Excellent experience! Zohaib delivered a pixel-perfect React landing page from my Figma file, on time and with great attention to detail. I would definitely hire him again.
Outstanding job. Clear communication and quality work from start to finish.
Very professional and efficient. The UI was implemented exactly as per my Figma design and looked great on different devices. Zohaib kept me updated during the process and made small tweaks quickly when requested. Highly recommend his work!
The freelancer successfully completed the full OneSignal integration for both iOS and Android apps, including push notifications, in-app notifications, and email notifications using OneSignal APIs. The implementation was done properly, worked as expected, and followed the required setup and configuration steps for both platforms. Communication was clear, and the task was delivered on time. I’m satisfied with the work and would definitely recommend this freelancer for notification-related integrations.
I had an excellent experience working with Zohaib Munir. The final delivery was bug-free, well structured, and demonstrated a very high level of code expertise and technical mastery. Beyond simply meeting the requirements, he consistently went above and beyond, proactively suggesting improvements and ensuring the solution was robust, secure, and scalable. Communication and collaboration were outstanding throughout the project. Zohaib Munir showed a strong level of cooperation, was responsive, transparent, and fully committed to the success of the project. Overall, this was a highly professional engagement, and I would strongly recommend this Zohaib Munir to anyone looking for quality, reliability, and true technical excellence.
Only logged in customers who have purchased this product may leave a review.
