Personal Operating System
Jersey · GMTEst. 2026Get in touch →
Practitioner notes · AI applied to finance & operations

Jewel Nguyen

An operator who builds — turning back-office problems into systems that run themselves.
Case Studies · Selected Work

Things I built because the manual way annoyed me.

Each one started as a personal annoyance and ended as a repeatable system. Some live, some portfolio.

The Builds

Three systems, in production or portfolio
Reliability · Live

The System That Audits Itself

Automations fail silently — you only notice when something downstream breaks days later. So I built two checks on top of the work: a daily heartbeat that confirms every job actually ran, and a weekly pass that cross-checks whether my own notes, plans and status still agree. Blind spots surface as alerts, not nasty surprises.

Self-checking systems · silence-means-healthy alerting

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AI Governance · Live

Four Eyes on a Robot

Letting an AI build and change things unsupervised is how quiet mistakes reach production. So I borrowed the control every finance team already trusts — four-eyes review — and wired it into the machine: every piece of automated work runs plan → build → an independent fresh-eyes audit, and nothing ships without a human approving it.

Review controls · human-in-the-loop · trust earned in steps

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Finance Ops · Case study

Building a Finance Function From Scratch

A newly merged, private-equity-backed group with no shared system and board reporting stitched together by hand each month. Over a year I designed the data model, automated the reporting, and stood up the first standard workflows — turning thirteen-step manual processes into one. The lesson: AI didn't win on model quality, but on ownership, process and clean data.

Post-M&A · ERP & reporting · AI-assisted build

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How These Get Built

The pattern behind every project
01 · Scope

Find the leak.

Map the manual steps and lost context before writing a line of code.

02 · Build

Smallest system.

One automation that removes one step, wired into existing tools, documented to hand over.

03 · Run

Make it self-watching.

Schedules and alerts that only fire on failure. Silence means healthy.

Other Builds

Build notes and essays from the work
July 12, 2026

Two controls on the AI that builds for me

I let an AI system build things for me most days. What lets me sleep on that isn't the model — models sound confident whether they're right or wrong. It's that I wrapped it in two controls any finance team would recognise on sight. One: the thing that builds never approves its own work — maker and checker are never the same actor. Two: assume most failures are quiet, so the system checks its own health and is built to make a sound when something breaks.

Build note · Jun 2026

Building the audit that watches the automations.

A system that checks its own health: a daily heartbeat that confirms every job ran, and a weekly pass that catches when its own records drift apart — plus the day it found its own blind spot.

Essay · Mar 2026

Twelve years in audit. Most of it shouldn't have been manual.

The hours didn't go on judgment — they went on work that shouldn't have been manual. The gap in audit isn't technology. It's execution.

Essay · Mar 2026

Being early is expensive.

Nine years ago I took a career break to study data science. What actually prepared me for AI in finance wasn't AI — it was data literacy.

Field notes · Feb 2026

1,588 contracts, four sessions — and I slept through most of it.

An AI agent — not an RPA bot — processed a backlog of scanned contracts across eight languages overnight. The difference wasn't speed. It was judgment.

Get in touch

Have a process that should be one click?

I'm open to conversations about building systems in finance & operations — and about any of the work above.