🔗 What Elixir taught me about design patterns

When I joined OpenFn three years ago, I had never written a line of Elixir. I came from a background in machine learning, building recommender systems in Python using TensorFlow and Flask. What started as a technical shift soon became a philosophical one. I wasn’t just learning a new language, I was learning to think in terms of supervision trees, message passing, and the rhythms of fault tolerance. This post gathers the patterns I’ve come to rely on since then, as both a craftsperson and a systems thinker.