# Harry Nguyen — AI Engineer Sydney 2026

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Canonical page: https://webdirections.org/ai-engineer/speakers/harry-nguyen/
Program status: The speaker lineup and talk descriptions are public. Session days, times, rooms and the full timetable have not yet been published.

## Running 100K+ Concurrent Agents: It's Never the Prompt


Your Agents Aren't Failing at Prompting

Every agent demo works. Then you run ten thousand at once, and the failures have nothing to do with the model: dead tuples piling up, a sync HTTP client freezing the event loop, requests hanging forever with no total timeout.

This talk is a look inside how we build and run agents at massive scale in production. It covers what broke, what fixed it, and the lessons that stuck, from why prefetch is really a distributed semaphore, to why layered timeouts beat one big number, to how Postgres as a queue can drive autoscaling at massive scale. It also shows how to get the most out of Postgres and its cache before bringing in Redis.

## Harry Nguyen

AI engineer, insightfactory.ai

I'm an AI Engineer at insightfactory.ai, where I build multi-agent systems at massive scale. I studied Computer Science at the University of Adelaide, and previously worked as a Machine Learning Engineer at the Australian Institute of Machine Learning, where my research focused on adversarial attacks and backdoor attacks against state-of-the-art object detectors, published at top-tier security conferences.

## Conference

- [Conference overview](https://webdirections.org/ai-engineer/index.md)
- [Agent guide](https://webdirections.org/ai-engineer/for-agents/)
- [llms.txt](https://webdirections.org/ai-engineer/llms.txt)