Work & writing.

APO — Autonomous Payment Orchestrator

From a payment request to a controlled execution: independent policy checks, durable retries, an idempotent payment core, and double-entry accounting.

My contribution

Directed an AI-built system, defined execution boundaries, recorded tradeoffs in ADRs, and shaped a scenario-based demo.

Result

A public interactive demo with simulated payments and real backend execution. Cloud verification confirmed a completed payment, ten safe repeat deliveries, and persistence after a VM restart.

A timeout is not a failed operation

The write succeeded. The response disappeared. A small experiment in retries, idempotency, and the limits of what a caller can know.

Practical TypeScript Refresher

An open-source handbook for returning TypeScript developers, with explained exercises, searchable code, and practical examples in three languages.

My contribution

Defined the scope and learning flow; directed AI-assisted content, reader development, and localization.

Result

Published 14 chapters and shared coding practice in English, Spanish, and Russian, with automated checks for examples and generated pages.

An engineering home

Content, source references, and interactive explanations with separate responsibilities.