ronan barrell.
HomeAboutProjectsContact
Email
Projects

Selected work

Client systems and personal projects, most recent first.

Flagship case study

Central Brain

Multi-tenant AI business platform combining company knowledge, persistent memory and authorised actions through connected services.

pythonfastapillm agentshybrid ragmicrosoft graph

Subscription Finder Agent

Gmail and Outlook analysis service that extracts subscriptions, renewals and trials from user mailboxes.

pythonfastapioauth 2.0microsoft graphgmail api

Competitor Analysis Agent

Async pipeline aggregating pricing, marketing, reviews, hiring and funding data into strategic reports.

pythonasynciohttpxllmweb data

Lead Finder Agent

Lead-discovery and enrichment pipeline using business-search data, Apollo and OpenAI-based ranking.

pythonopenaiapolloenrichmentranking

Personal Finance Intelligence

Local-first FastAPI app that categorises UK bank transactions and answers finance questions via guarded text-to-SQL.

pythonfastapisqliteclaudetext-to-sql

Multi-Agent Cognition Sandbox

Guardrailed simulation where LLM-controlled agents perceive, reason and act in a tile-based world.

pythonasynciopydanticllm agentspathfinding

Ronan Barrell

Applied AI Engineer

© 2026 Ronan Barrell. Built with care.