Fatai Ajani

@FataiAjani

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Python Backend & AI Integration Engineer | RAG Systems & API Automation

I am a Python Backend & AI Integration Engineering specializing in building RAG systems, LLM-powered applications, and API-based AI infrastructures for businesses, ecommerce stores, SaaS platforms, and digital companies that need real production-ready AI systems.

I do not build simple chatbots or prompt-based tools. I design backend systems that connect AI models to real business data through APIs, retrieval pipelines, and scalable server-side architecture.

Most businesses today already use tools like Shopify, CRMs, support platforms, and internal dashboards. The challenge is not having AI, it is connecting AI properly to those systems so it can actually work with real data. That is what I build.

I focus on transforming business operations into intelligent systems where AI can retrieve, process, and generate information from structured and unstructured data.

Who I work with

I help:

  • ecommerce stores that want AI-powered support, product search, and autoomation
  • SaaS companies building AI features into their platforms
  • Agencies that want internal automation and AI workflows
  • Online businesses that want to reduce manual operations
  • Companies that need AI connected to their existing tools and databases

Core Expertise

  • RAG (Retrieval-Augmented Generation) system for business data
  • Python backend development for scalable AI applications
  • FastAPI API architecture and microservices
  • OpenAI API and LLM integration for real applications
  • Vector database systems for semantic search
  • LangChain-based AI workflows (when required)
  • AI knowledge base systems for companies and ecommerce
  • Document ingestion and embedding pipelines
  • API orchestration between tools and services
  • Backend automation systems for business operations
  • AI-powered internal tools and dashboards
  • Data retrieval systems for structured and unstructured data

What I build for businesses

I build systems such as:

  • AI customer support systems connected to company knowledge bases
  • ecommerce AI assistants that answer product and order questions
  • semantic search engines for documents, FAQs, and databases
  • backend AI APIs that power SaaS AI features
  • automated workflows that reduce manual business operations
  • AI tools that connect CRM, email, and internal systems
  • retrieval systems that make business data searchable through AI
  • AI agents that perform structured tasks using business data

Business value

My work helps companies:

  • reduce customer support workload
  • automate repetitive operations
  • improve response speed using AI systems
  • unlock internal data using AI search
  • integrate AI into existing platforms without rebuilding everything
  • scale operations without increasing manual staff workload

Engineering approach

I build systems with a backend-first mindset.

  • clean and modular architecture
  • structured API design
  • scalable data pipelines
  • reliable retrieval systems
  • production-ready deployment practices
  • performance and maintainability focus

I prioritize systems that can be deployed, scaled, and maintained, not just prototypes or demos.

Tech stack

Python • FastAPI • OpenAI API • LangChain • PostgreSQL • REST APIs • Vector Databases (Pinecone / FAISS / Weaviate) • Docker • Backend Systems • AI Pipelines

Ideal projects

  • AI systems for ecommerce businesses
  • RAG implementations for company knowledge bases
  • backend API integrations for SaaS platforms
  • AI customer support automation systems
  • document search and retrieval systems
  • AI workflow automation for business operations
  • LLM-powered backend features

I specialize in building the infrastructure layer where AI becomes a functional part of real business systems, especially for ecommerce, SaaS, and digital companies that rely on data and automation.

#Python #RAG #FastAPI #OpenAIAPI #AIIntegration #EcommerceAI


Portfolio


My services

Orders in progress 0

Total sales 0

Seller since May 2026



Skills

  • CRM management
  • Automated workflow
  • Prompt engineering
  • AI agent
  • Api integration
  • LLM
  • Systeme.io
  • Functional programming
  • Api
  • Python

Work experience

  • AI Backend Engineer Independent AI Systems Studio - Since Jan 2025
    Built Python-based AI backend systems including RAG pipelines, FastAPI services, and LLM integrations for ecommerce and SaaS businesses. Focused on production-ready API architecture and AI retrieval systems.
  • AI Systems Engineer (Research & Development) Independent AI Systems Studio - Since Jan 2024
    Focused on RAG systems, vector databases, and LLM integrations. Built experimental AI retrieval systems and document search pipelines for real-world applications
  • Python Backend Developer Independent AI Systems Studio - Mar 2023 - Dec 2024
    Developed backend APIs, automation systems, and data-driven applications using Python and FastAPI. Integrated external APIs and databases for business process automation.

Degrees and certifications

  • Building AI Agents with OpenAI APIs Specialization Coursera / DeepLearning AI  ‐ Jul 2025
  • RAG & Vector Search Systems Certification (AI Search) Weaviate Academy  ‐ Jan 2025
  • Bachelor of Science in Computer Science (Software Engineering Track) University of Lagos, Nigeria  ‐ Jun 2024