I find it difficult to include examples because a lot of my work is boring backend work on existing closed-source applications. It's hard to share, but I'll give it a go with a few examples :)
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First example: Our quota detection system (shipped last month) handles configurable threshold detection across billing metrics. The business logic is non-trivial, distinguishing counter vs gauge metrics, handling multiple consumers, and efficient SQL queries across time windows.
Claude's evolution: - First pass: Completely wrong approach (DB triggers) - Second pass: Right direction, wrong abstraction - Third pass: Working implementation, we could iterate on
---- Second example: Sentry monitoring wrapper for cron jobs, a reusable component to help us observe our cronjob usage
Claude's evolution: - First pass: Hard-coded the integration into each cron job, a maintainability nightmare. - Second pass: Using a wrapper, but the config is all wrong - Third pass: Again, OK implementation, we can iterate on it
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The "80%" isn't about line count; it's about Claude handling the exploration space while I focus on architectural decisions. I still own every line that ships, but I'm reviewing and directing rather than typing.
This isn't writing boilerplate, it's core billing infrastructure. The difference is that Claude is treated like a very fast junior who needs clear boundaries rather than expecting senior-level architecture decisions.