You will get AI Agent & RAG Development | LangChain, OpenAI, Custom Chatbots
Project details
Build intelligent AI agents and chatbots powered by LangChain, OpenAI, and Python. I create stable AI systems that answer questions, reason over documents, and integrate seamlessly with your business tools.
I build custom AI chatbot development, RAG applications, and AI agent workflows designed for real-world use cases—not demos. Whether you need a document Q&A system, AI knowledge base, or API driven assistant, I build solutions that are accurate, scalable, and easy to extend.
What I build:
LangChain based AI agents with tool calling
RAG applications using PDFs, websites, and private data
OpenAI API integration (GPT 4 / GPT 4o)
Vector database & semantic search setups
Custom AI chatbots for websites or platforms
API driven AI workflows and automation
Each project is designed with clean architecture, error handling, and future scalability in mind. I focus on business outcomes faster responses, smarter automation, and reliable AI systems you can trust.
Message me to discuss your use case and build an AI solution that actually works in production.
I build custom AI chatbot development, RAG applications, and AI agent workflows designed for real-world use cases—not demos. Whether you need a document Q&A system, AI knowledge base, or API driven assistant, I build solutions that are accurate, scalable, and easy to extend.
What I build:
LangChain based AI agents with tool calling
RAG applications using PDFs, websites, and private data
OpenAI API integration (GPT 4 / GPT 4o)
Vector database & semantic search setups
Custom AI chatbots for websites or platforms
API driven AI workflows and automation
Each project is designed with clean architecture, error handling, and future scalability in mind. I focus on business outcomes faster responses, smarter automation, and reliable AI systems you can trust.
Message me to discuss your use case and build an AI solution that actually works in production.
Programming Languages
HTML & CSS, Python, TypeScriptCoding Expertise
PSD to HTML, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$50
|
Standard
$200
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 3 | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Frequently asked questions
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OP
Oke P.
Feb 10, 2026
AI Voice Agent Developer Needed (Retell AI & Dialogflow) – Trial Project for Long-Term Role
We were impressed with Martin's work on our test project for voice automation with Vapi. He provided a great overview, was timely, and communication was spot on. We'll definitely continue working with him and recommend him for his responsiveness and expertise. 👍 Best of luck, Martin!
About Martin
AI Voice Agent & AI Chatbot Developer | n8n Automation, GHL CRM & APIs
Akure, Nigeria - 9:26 pm local time
What I do is simple: I remove the operational bottlenecks that cause leads to fall through the cracks. Whether the problem is delayed follow-up, disconnected tools, or a CRM that never stays up to date, I build systems that handle the process reliably in the background.
My work combines AI Voice Agents, Conversational AI, n8n automation, GoHighLevel automation, CRM automation, webhook automation, and API integrations to create production-ready automation that supports real business workflows instead of becoming another tool your team has to manage manually.
🚀 What I Build
🎙️ AI Voice Agents & AI Receptionists
• Handle inbound AI call routing and qualification
• Book appointments automatically
• Recover missed-call opportunities
• Provide 24/7 customer response coverage
• Use Conversational AI that sounds natural and keeps conversations moving toward the next action
⚙️ n8n Workflow Automation
• Route and assign leads automatically
• Update CRM records in real time
• Trigger internal notifications and tasks
• Automate multi-step Business Process Automation workflows
• Sync data between disconnected tools
• Build reliable backend workflows with proper error handling
📊 CRM Automation
• GoHighLevel / HighLevel / GHL
• HubSpot
• Airtable
• Follow Up Boss
• Custom pipeline automation
• Lead Management Automation and follow-up sequencing
🔗 API & Webhook Integrations
• REST APIs
• Webhook automation
• JSON data processing
• Twilio integrations
• OpenAI API integration
• make com and Zapier integrations
• Google Calendar scheduling automation
🛠️ Tools I Work With
n8n, GoHighLevel (GHL), Twilio, Vapi, Retell AI, ElevenLabs, OpenAI, Claude, make com, Zapier, HubSpot, Airtable, Google Sheets, Google Calendar, REST APIs, Webhooks, and JSON-based integrations.
🏢 Industries I’m Best Suited For
• Real Estate
• Property Management
• Mortgage & Lending
• Healthcare & Clinics
• Home Services (HVAC, Plumbing, Electrical, Cleaning)
• Agencies
• Sales Teams
• Local Service Businesses
These businesses usually need faster speed-to-lead, cleaner CRM operations, automated follow-up, appointment scheduling, and reliable customer communication automation — not just a basic chatbot or a one-off workflow.
🧠 How I Approach Projects
I don’t start by asking, “Which tool should we use?” I start by understanding how your business actually works.
Before I build anything, I map:
• how leads enter your business,
• what happens when someone answers,
• what happens when nobody answers,
• which data needs to be captured,
• where the bottlenecks occur,
• how the workflow should behave when something fails, and
• what your sales or operations team needs to see inside the CRM.
That’s how you get automation that is useful in production, not just impressive in a demo.
🔧 Common Systems I Build
• AI Voice Agent + GHL + Twilio booking systems
• n8n lead qualification and CRM sync workflows
• AI Receptionists for service businesses
• Appointment booking and reminder automation
• Email and SMS Follow-up Automation
• Customer Support Automation with AI handoff logic
• Lead Qualification and Sales Automation workflows
• Multi-channel communication systems connected to a central CRM
📈 The Outcomes I Aim For
• Faster lead response times
• Fewer missed opportunities
• Reduced manual admin work
• Better CRM organization
• More consistent follow-up
• Automated appointment scheduling
• Cleaner data across your systems
• Improved operational visibility
• Scalable automation that grows with your business
🤝 What Clients Can Expect
• Practical problem-solving
• Production-ready automation implementation
• Clean workflow architecture
• Reliable API Integration and Webhook Automation
• Thoughtful testing and debugging
• Clear, proactive communication
• Documented logic and maintainable workflows
• Systems designed for long-term use, not temporary fixes
If you’re looking for an AI Voice Agent, AI Receptionist, n8n automation specialist, GoHighLevel automation expert, CRM automation consultant, API integration developer, appointment booking automation system, lead qualification workflow, or a complete sales and follow-up automation solution, I can help you design and build a system that reduces manual work, keeps your CRM in sync, improves response speed, and supports business growth without adding unnecessary complexity.
Steps for completing your project
After purchasing the project, send requirements so Martin can start the project.
Delivery time starts when Martin receives requirements from you.
Martin works on your project following the steps below.
Revisions may occur after the delivery date.
Use Case & Agent Planning
I review your chatbot goal, use case, and expected behavior to design the AI logic, conversation flow, and agent structure.
Knowledge & RAG Setup
I connect your documents, website, or data source and build a RAG pipeline using LangChain or embeddings for accurate responses.