@johntcosta

John Costa

@johntcostaOakland, CAJoined August 2022

Software Engineer focused on shipping value in the form of code that is easy to read, maintain, and extend.

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John Costa's blogs

The Engineering Productjohntcosta.hashnode.dev20 posts

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JCJohn Costajohntcosta.hashnode.devApr 28 · 6 min read

Not Every Business Win Is a Feature

There's an assumption engineers pick up early. The way you create value is by shipping something into the product: a feature, a fix, an improvement to something users see every day. That's the roadmap, that's the sprint board, and that's where engine...

JCJohn Costajohntcosta.hashnode.devApr 21 · 11 min read

Your Team Needs a Code Review Canon

You finish your code change, go through several rounds of self-review and testing, fix issues, and get CI passing. You have a polished piece of work that's ready to go. You put it up for review, and nothing happens. Maybe for several days. You ping t...

JCJohn Costajohntcosta.hashnode.devApr 15 · 5 min read

100 Merged PRs: What I Learned Contributing to Open Source with AI

My first contribution in this run was to Owncast, a self-hosted live streaming platform written in Go. I had never used it and I had never written Go. I found an issue, pointed Claude Code at it, and it implemented a fix. I spun up the app locally an...

JCJohn Costajohntcosta.hashnode.devApr 14 · 8 min read

From Raspberry Pi to 17-Container Homelab in Six Months

A year ago, my smart home was a mess. Ring app for the alarm, Hue app for lights, Aqara app for the lock, SwitchBot app for curtains. Five different apps to control one house. My wife wasn't going to

JCJohn Costajohntcosta.hashnode.devApr 12 · 3 min read

You Were Never Typing Code

A few years ago, I was reviewing code from dozens of developers across our team. One pattern I saw constantly: a dev would need a new API endpoint, so they'd open an existing one, copy the whole thing, rename the route, swap out the model, adjust the...

John Costa

About

Available for

John Costa's blogs

Recently published

Not Every Business Win Is a Feature

Your Team Needs a Code Review Canon

100 Merged PRs: What I Learned Contributing to Open Source with AI

From Raspberry Pi to 17-Container Homelab in Six Months

You Were Never Typing Code

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John Costa

About

Available for

John Costa's blogs

Recently published

Not Every Business Win Is a Feature

Your Team Needs a Code Review Canon

100 Merged PRs: What I Learned Contributing to Open Source with AI

From Raspberry Pi to 17-Container Homelab in Six Months

You Were Never Typing Code