---
title: "Michael Arnaldi"
description: "Michael Arnaldi develops Effect and explains its TypeScript design in public talks."
group: person
terms:
  - "Michael Arnaldi"
sources:
  - https://youtu.be/7sJc3Z4mh1w
  - https://youtu.be/gc5P36t6kD0
  - https://youtu.be/und9h4xiIz4
  - https://youtu.be/BqUnsDnMnMo
---

# Michael Arnaldi

Michael traces Effect to a TypeScript team's needs for dependency injection, reliable tests, resource safety, concurrency control, and retries. [Effect Days 2024, 08:40](https://youtu.be/7sJc3Z4mh1w?t=520).

He describes Effect computations through their outputs, predictable failures, and requirements. [Happy Path 81, 49:15](https://youtu.be/gc5P36t6kD0?t=2955).