Lachlan Coleman-Barrett
AI Systems Architect & Growth Engineer
Digital marketer and software developer with experience across SEO, paid advertising, marketing automation, CRM systems, and AI agent development. I build complete business infrastructure — connecting marketing, sales, CRM, and automation into unified growth systems with AI at the core.
Background in web development, SaaS tooling, and cloud infrastructure. Previously worked across e-commerce (Amazon FBA), digital marketing agencies, and SaaS automation. Currently based in Asia, building AI-powered growth systems for businesses.
The infrastructure below serves as my Personal Management System (PMS) — a live operating environment I built to manage my own business, automate workflows, and develop AI agents. The same architecture powers client-facing systems.
All systems are live and running in production. Live demos available on request.
Live Walkthrough
13-minute video tour of the full infrastructure — services, automation, AI agents, and monitoring dashboards.
Cloud Infrastructure
14 containerized services on a production VPS — Docker Compose orchestration with automatic HTTPS, monitoring, and self-healing.
| Service | Purpose | Status |
|---|---|---|
| N8N | Workflow automation engine | Running |
| LangGraph | AI agent orchestration | Running |
| PostgreSQL | Primary database | Running |
| Redis | Cache & queue management | Running |
| Qdrant | Vector database (semantic memory) | Running |
| Langfuse | LLM observability & tracing | Running |
| Caddy | Reverse proxy + auto HTTPS | Running |
| Gatus | Uptime monitoring | Running |
| Beszel | Server performance monitoring | Running |
| Omi Webhook | IoT transcript receiver | Running |
AI Agent Systems
Custom AI agents built with Claude Agent SDK + LangGraph for business intelligence, content generation, and knowledge retrieval.
Knowledge Agent
Natural language queries against business knowledge base. Connected to Google Drive corpus with guardrails and audit logging.
Content Agent
Multi-step content pipeline: draft generation, webhook-triggered approval flows, and publish automation via N8N.
Omi Live Transcription
IoT wearable captures conversations in real-time. Nightly AI summarization, weekly knowledge distillation to Notion + Obsidian.
Semantic Memory Engine
Vector database storing conversation context with auto-extraction. Enables AI continuity across sessions via semantic search.
SEO Audit Agent
Automated technical SEO analysis: crawl site structure, meta tags, Core Web Vitals, internal linking, schema markup, and keyword gaps. Generates prioritized action report.
GBP Audit Agent
Google Business Profile optimization: reviews analysis, category accuracy, photo completeness, Q&A coverage, post frequency, and local ranking signals.
Website Audit Agent
Full-site analysis: conversion rate optimization, UX issues, mobile responsiveness, page speed, security headers, and accessibility compliance. AI-generated improvement roadmap.
Outreach Agent
AI-powered prospecting: research target companies, generate personalized email sequences, manage follow-ups, track opens and replies. Multi-channel with SMS fallback.
Customer Support Agent
AI chatbot trained on company knowledge base. Handles FAQs, appointment booking, lead qualification, and escalation to human agents when needed.
Competitor Intelligence Agent
Automated competitor monitoring: track pricing changes, new content, ad campaigns, social activity, and market positioning. Weekly intelligence reports delivered via Slack.
Ad Performance Agent
Google Ads and Meta Ads optimization agent. Analyzes campaign performance, identifies wasted spend, suggests bid adjustments, and generates new ad copy variations.
Voice AI Agent
Inbound and outbound voice automation: appointment confirmations, follow-up calls, lead qualification, and customer surveys. Natural conversation with handoff to humans.
Business Automation
30+ production N8N workflows covering lead generation, CRM pipelines, AI content, monitoring, and operations.
Missed Call → Booked Job
GHL integration: missed call triggers instant SMS follow-up, booking link, calendar confirmation, and CRM pipeline update. Fully automated.
Lead Pipeline Automation
Lead capture, scoring, tagging, assignment, and multi-step follow-up sequences. Automated nurture from first touch to booked appointment.
Cold Email Engine
Scalable outreach system: list building, sequence management, unsubscribe handling, sender reputation management. 4,000 emails/month capacity.
AI Content Pipeline
Webhook → LangGraph → Claude Sonnet → Draft → N8N → Approval notification → Publish. End-to-end AI content with human approval gate.
Morning Briefing Generator
Daily automated briefing: calendar events, tasks, weather, news — delivered to Slack and Telegram every morning at 7am.
Infrastructure Monitoring
VPS health checks every 12 hours, N8N error monitoring every hour, automated backups, log rotation, and Docker cleanup.
CRM & Sales Systems
Complete GoHighLevel agency setup — from lead capture to review request automation.
Content Pipeline Tool
Custom web application managing 56+ content ideas across 10 platforms — from ideation to AI-generated drafts.
Idea Browser
Filter and search content cards by platform, status, tags, type. Inline card creation with full metadata. Connected to keyword research via Google Sheets.
Command Builder
Select a card, configure parameters, and generate structured AI prompts for content generation. Includes raw notes injection and weekly review context.
Scheduled Automation Engine
16 cron jobs running autonomously — monitoring, briefings, backups, AI self-improvement, and market intelligence.
Technical Capabilities
Results & Performance
Real outcomes from live systems — client work and personal infrastructure.
What I Build for Businesses
CRM + Automation
Lead capture, nurture sequences, booking automation, follow-up — all automated from first touch to closed deal.
AI Agent Workflows
Custom AI agents for customer support, sales intelligence, content generation, and operational automation.
Growth Systems
Landing pages, SEO, Google Ads, email campaigns — complete marketing infrastructure with analytics and AI insights.
Data & Intelligence
Tracking, dashboards, automated reporting, and AI-powered business insights from your existing data.
Software Development
Custom web applications, API integrations, cloud infrastructure, and SaaS tooling. Full-stack development from prototype to production deployment.
International Growth
English-language market expansion, cross-border marketing systems, and localized landing pages for global audiences.
Let's Build Something
Most consultants teach AI tools. I build complete business systems.
Want to see any of these systems live? I can walk you through demos of the infrastructure, automations, and tools listed above.