Liam Brennan

At ATOM, I lead IT infrastructure for 1,000 users and systems, maintaining 99.99% monthly uptime across Windows and Linux environments.

I delivered a full virtualization migration that reduced the hardware footprint by 25% and improved disaster recovery from hours to minutes. I also designed secure network architecture using VLAN segmentation, firewall rules, ACLs, and routing policies, while managing server and networking procurement with zero unplanned downtime.

I built ATOM's first AI governance framework, including playbooks, prompt guides, and safe-use policy, and trained teams to increase company-wide usage from 15% to 77%.

Alongside infrastructure work, I build practical software projects including a C# neural network, a Python REST API, and a retrieval-augmented generation search pipeline using vector search and an LLM. My computer science background includes C, C++, C#, Python, Java, HTML, JavaScript, Flutter, AI recognition models, and unit testing.