Get a production-ready AI agent, chatbot, RAG pipeline or automation workflow built by a London-based AI and cloud specialist — tailored precisely to your business logic and existing stack.
I Will Build AI Agents, Chatbots, RAG & Automation Apps
A focused AI integration or consultation — ideal for simple fixes, scoping or adding an AI model to an existing application.
- Integration of an AI model into your existing web or mobile app
- Supports OpenAI, ChatGPT or open-source model selection
- Suitable for simple fixes, consultation or architecture design
- Communication and guidance throughout via order chat
- 3 revisions included
A more substantial AI build — adds workflow automation or chatbot development on top of the core integration.
- Everything in Starter, with extended scope and delivery time
- AI agent or chatbot development (OpenAI, ChatGPT, or open-source)
- N8N or VoiceFlow automation workflow integration
- Training ChatGPT or a custom model with your business data
- Integration with your existing platform (web or mobile)
- 3 revisions included
A comprehensive, full-stack AI solution — voice agents, RAG pipelines, LangChain apps or multi-step automation built end to end.
- Everything in Boost, with full-stack scope and maximum delivery window
- Voice chatbot with AI agent capabilities (VAPI or VoiceFlow)
- RAG pipeline or LangChain-powered long-form AI writing tool
- Full-stack GPT application or custom AI SaaS feature development
- DALL-E or generative AI feature integration where applicable
- 3 revisions included
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
AI Stack Coverage
Engagement Model
Base Delivery
Deployment Breadth
What You'll Receive
Full Description
Your competitors are already deploying AI. The question is whether your business will lead that change or scramble to catch up.
This listing gives you direct access to a London-based AI and cloud specialist who builds production-grade intelligent systems — from lightweight model integrations and consultation sessions right through to full-stack AI applications, voice agents, RAG pipelines and N8N or VAPI automation workflows. Every solution is scoped to your actual business objectives, not a generic template.
**What this service covers**
Whether you need a customer-facing chatbot trained on your own data, an AI agent that autonomously handles multi-step tasks, a recommendation or content-generation engine, or a voice-enabled assistant integrated into your existing web or mobile platform — all of it falls within scope. The tech stack spans OpenAI, ChatGPT, DALL-E, open-source models, N8N, VAPI, VoiceFlow, LangChain, AWS and broader cloud and DevOps tooling.
Specific capabilities include:
— AI agent architecture and implementation
— Custom ChatGPT training on your proprietary data
— RAG (Retrieval-Augmented Generation) pipeline development
— N8N, VAPI and VoiceFlow workflow and app builds
— Voice chatbot integration with GPT-powered backends
— Full-stack GPT application development
— Custom AI writing tools and long-form generation tools via LangChain
— Integration of AI models into existing web or mobile applications
— Ongoing support and maintenance
**How it works**
Before any order is placed, a brief discovery conversation is strongly recommended. This ensures the scope, timeline and approach are clearly agreed upfront — no surprises. Once the order begins, you will be guided through exactly what information or access is needed. Development proceeds with regular communication via the order chat, and revisions are included to make sure the final delivery matches your expectations.
**Who this is for**
This service suits founders, product teams, agencies and operations managers who want to embed AI capabilities into their business — whether that means a first proof-of-concept integration, a fully autonomous agent, or anything in between. It is equally suited to those who need expert consultation on architecture before committing to a build.
**Why this seller**
Zinn Digital is a London-based specialist with hands-on expertise across AI, machine learning, cloud infrastructure and DevOps. The focus is always on scalable, maintainable solutions that fit your existing environment — not throwaway prototypes. The breadth of the stack (from OpenAI APIs to open-source models to voice platforms to cloud deployment) means you deal with one expert rather than coordinating multiple contractors.
Discuss your project before placing an order to confirm the right tier and scope for your needs.
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 | 2 days | 5 days | 7 days |
| Revisions | 3 | 3 | 3 |
| Integration of an AI model into your existing web or mobile app | ✓ | ✕ | ✕ |
| Supports OpenAI, ChatGPT or open-source model selection | ✓ | ✕ | ✕ |
| Suitable for simple fixes, consultation or architecture design | ✓ | ✕ | ✕ |
| Communication and guidance throughout via order chat | ✓ | ✕ | ✕ |
| 3 revisions included | ✓ | ✓ | ✓ |
| Everything in Starter, with extended scope and delivery time | ✕ | ✓ | ✕ |
| AI agent or chatbot development (OpenAI, ChatGPT, or open-source) | ✕ | ✓ | ✕ |
| N8N or VoiceFlow automation workflow integration | ✕ | ✓ | ✕ |
| Training ChatGPT or a custom model with your business data | ✕ | ✓ | ✕ |
| Integration with your existing platform (web or mobile) | ✕ | ✓ | ✕ |
| Everything in Boost, with full-stack scope and maximum delivery window | ✕ | ✕ | ✓ |
| Voice chatbot with AI agent capabilities (VAPI or VoiceFlow) | ✕ | ✕ | ✓ |
| RAG pipeline or LangChain-powered long-form AI writing tool | ✕ | ✕ | ✓ |
| Full-stack GPT application or custom AI SaaS feature development | ✕ | ✕ | ✓ |
| DALL-E or generative AI feature integration where applicable | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Build AI Agents, Chatbots, RAG & Automation Apps
Build AI Agents, Chatbots, RAG & Automation Apps
Extra Information
Why Choose Me
Tools I Use
Perfect For
Frequently Asked Questions
Yes — this is strongly recommended. AI projects vary enormously in scope, and a brief discussion before ordering ensures the right package is selected, the delivery time is realistic, and there are no surprises. Please message via the platform before placing your order.
At minimum, a description of what you want to build, your existing tech stack (if any), and any relevant logins or API keys required for integration. The more context you can share upfront, the smoother the process will be. You will be asked for this via the order requirements form.
The service covers OpenAI (GPT models, DALL-E), open-source language models, LangChain, N8N, VAPI, VoiceFlow, and full-stack GPT application development. If you have a specific tool or model in mind, mention it during the initial discussion.
Yes. Training or fine-tuning an AI model on your proprietary data is a core part of the service. This typically involves reviewing your data, preparing it appropriately, and building a retrieval or fine-tuning pipeline. The exact approach depends on your data type and use case — discuss this upfront for accurate scoping.
Each package includes 3 revision rounds. After delivery, you review the work and submit consolidated feedback via the order chat. Revisions cover adjustments within the original agreed scope. Changes that significantly expand the scope may require a separate order or addon.
The Starter package is well suited to consultation, architecture planning, or a single focused integration. If you have a larger project in mind but are unsure of the full scope, start with a Starter-level discussion and the right path forward will become clear.
Integration with existing platforms is explicitly included across all packages. Whether your platform is web-based or mobile, the aim is seamless integration rather than a standalone tool that sits apart from your current setup.
Yes. Post-delivery support and maintenance is available as an addon, covering a 7-day window after the order is completed. For longer-term arrangements, this can be discussed separately via the platform.
Customer Reviews
See what our customers say about this Zinn
Ujjwal G truly impressed me with his AI Development skills, delivering exceptional work that exceeded my expectations. His professionalism and attention to detail, combined with proactive communication and quick responsiveness, made working with him a seamless experience. I highly recommend this talented freelancer!
great developer!
Once again, I am extremely satisfied with the result and truly appreciate the professionalism and excellent collaboration.
Great guy. Will use again.
Another successful project with Ujjwal.
Only logged in customers who have purchased this product may leave a review.
