Fauzi Hussein

Notes by Fauzi Hussein

Writing on AI.
Engineering, systems & practice.

Essays on AI systems: how we build them, and what happens once they are in production.

[ fig.1 ] management_loops
WIDEST SCOPEEACH LOOP ENDS IN A DECISIONPRACTICEexpand / reorganise / closeis this still the right arrangement?PORTFOLIOfund / sequence / stopwhich commitments deserve capacity?OPERATIONcontinue / correct / transferdoes the live arrangement remain useful?RELEASErelease / narrow / pausedoes evidence cover this boundary?ENGAGEMENTbuild / change / stopdoes the proposed workflow address the problem?EVIDENCE RISESCOMMITMENT DESCENDSTHE NEXT DECISION STARTS THE FOLLOWING LOOPor returns to an earlier loop when evidence requires a change
evidence rises, commitment descendsLIVE
Latest: Running an Internal Forward-Deployed Engineering Practice

Writing

All essays
Latest essay

Running an Internal Forward-Deployed Engineering Practice

A practical system for governing FDE engagements, evidence, releases, incidents, capacity, ownership, value, and the practice itself.

Read essay 47 min read
Setting Up an Internal Forward-Deployed Engineering PracticeHow I would establish an internal AI FDE practice that can finish valuable workflows and leave them with an owner.Sept 2026 · 34 minWhat Forward-Deployed Engineering DoesWhy a shared AI platform still needs engineers who can turn its capabilities into owned business workflows.Sept 2026 · 9 minAI Agents Have a Compliance ProblemGoogle's A2A protocol lets agents from different vendors find each other and pass work along. In a bank, some of the walls it crosses are there by law. What a compliance layer has to add before you can use it.Nov 2025 · 16 minManaging Tokens and Context Windows for Large Language ModelsWhy answers from a language model get cut off mid-sentence, and how to budget what you send and what you ask for so they don't.Sept 2025 · 17 min

Projects

All projects

Tools I wanted to exist.
Built in the open.

github.com/0xfauzi ↗

kstrl

Verification harness for coding agents

rust2py

Agentic Rust → Python migration

RLM-RS

Recursive language models

pptx-layout

Flexbox & grid for PowerPoint

Background

I’m Fauzi, an applied AI/ML lead at JPMorgan Chase in London. Before that, I spent eight years at Goldman Sachs building engineering and data platforms.

More about me & my work