Javier Hack
Tech lead · Applied AI · Gold Coast, Australia
I make AI work in production, and share what I learn.
I've spent my career shipping software. Most of it now goes on the gap between an impressive AI demo and a system that holds up under pressure. I lead delivery, design the architecture, and write down what actually happened.
Role
Tech Lead, delivery & architecture
Industries
Marketplaces · Government · Finance · Travel · SaaS
Named work
ShiftGreenHub: RAG product finder
Based
Gold Coast, AU · remote-friendly
AI
Is software engineering quietly becoming implementation engineering?
AI agents write a lot of code now, and increasingly, whole systems ship as prebuilt blueprints. Not a claim that engineering is over, a look at what's actually shifting, and the questions that come with it.
AI
Building ShiftGreenBot: a RAG Product Finder
A walkthrough of the chatbot I built for the marketplace: how it turns plain language into grounded product recommendations using Azure OpenAI, MongoDB vector search, and a RAG flow.
Architecture
Six decisions, five of them reversed, and one we never made at all
A multivendor marketplace went from a custom platform, to native Shopify, to Shopify's own headless stack, to a hand-rolled headless setup with Stripe carrying payments. Every technical decision was reasonable at the time. The one that mattered most was never made deliberately at all.