What does David Fowler say separates a senior engineer from a principal engineer?

David Fowler describes the leap from senior to principal as being able to do more through other people than through your own hands. He says many engineers plateau at that point because they enjoy coding alone and building things themselves, while software engineering is really a collaborative effort of getting customer feedback, deciding what to build and how.

• Fowler says thinking about team outcomes rather than individual work was the change that prepared him for .NET Core.

▸In their words

“I think the leap from senior to principal feels like being able to do more through others than yourself.” David Fowler · at 4:27 — open in the transcript →

Source: our own transcription of the episode. The full conversation is on Ryan Peterman (2026-10-21). Read the whole episode summary →

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