My tests all passed. The broker disagreed.

Nov 9, 2026 · 13 min read

Two cards under the headline My tests passed. The broker disagreed. The left card, My tests, lists lint, type checks, unit tests, integration tests, a 100-run soak and snapshots, all marked pass. The right card, Me vs. the broker, shows positions and cash as matching and corporate actions as differing, stamped MISMATCH in red — Image credit: author, drawn with code

I stopped re-explaining myself to AI

Nov 2, 2026 · 12 min read

Five labels on the left, Claude Code, Grok Bot, School bot, Memex bot and Another AI, with arrows into one card labeled memex/ that lists INDEX.md, decisions.md, knowledge/, context/, bots/ and dreams/, under the headline One memory, every AI — Image credit: author, drawn with code

I built an AI bot to read our kids' school email. Here's what I'd tell you before you build one.

Oct 26, 2026 · 14 min read

I spent 21 months building a trading system, then had AI models tell me not to start the company

Oct 20, 2026 · 15 min read

Two tilted memo pages of gray placeholder lines on a dark background, each stamped in red with the same verdict: PERSONAL ONLY — Image credit: author, drawn with code

Changing only the random seed made my trading model look twice as good

Oct 12, 2026 · 18 min read

Eleven thin gray lines wandering right from a single bright starting point on a dark background, spreading apart as they go, with one glowing red line among them ending highest — Image credit: author, drawn with code

My first trading models knew which companies would survive

Oct 5, 2026 · 22 min read

Rows of grey gravestones receding into fog under a dusk sky, with a single bright red line chart climbing through them from lower left to upper right — Image credit: author, drawn with code

I let AI agents write most of a live-trading codebase. Here's the gate that made it safe.

Sep 28, 2026 · 16 min read

A lowered railroad crossing barrier with glowing red lights across a wet road at dusk, a train blurring past behind it — Image credit: AI-generated

Turnkey Data Analysis Using DuckDB and Metabase for PostgreSQL & CloudWatch

Mar 1, 2024 · 11 min read

How we used DuckDB and Metabase to streamline our data analysis workflow, enabling us to build an email list to contact our frequent users.

Running MosaicML's MPT-7B, a ChatGPT Competitor, on AWS SageMaker

Jul 18, 2023 · 8 min read

In this blog post, I’m going to take you step-by-step through the process of running MosaicML’s ChatGPT competitor, MPT-7B, on your own AWS SageMaker instance.

My Journey with ChatGPT for Business: Unleashing the Power of AI for Software Engineers

Jul 8, 2023 · 5 min read

Introduction

As a software engineer, I’m constantly searching for tools and technologies that can revolutionize the way I work. Today, I want to share a prototype app: ChatGPT for Business. I believe if we follow through on building this, it has the potential to transform our industry. Join me as I take you through my experiences, challenges, and the immense possibilities that lie ahead.