@johntcosta

John Costa

@johntcosta

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

Joined August 2022

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John Costa's blogs

John Costa's Blogblog.jcosta.tech8 posts

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blog.jcosta.tech

Why Functional Programming Is the Most Important Skill for the AI Era

Boris Cherny, the creator of Claude Code at Anthropic, recently appeared on Lenny's Podcast and said something that stopped me in my tracks. When asked whether coding skills still matter, he was unequ

3d ago8 min read

blog.jcosta.tech

How to Have a Career in 2026

I've been evangelizing AI across our technology team for a while now. Recently, it's started to spill over into the rest of the organization. Colleagues and friends outside of engineering are asking me how they can use AI in their daily work, how the...

Feb 146 min read

blog.jcosta.tech

What It Takes to Be a Software Engineer in 2026

It's no longer enough to be an individual contributor who pulls cards off the board, completes tasks, raises PRs, and merges them. AI has made implementation easier. What once took days now takes hours. This means implementation is becoming commoditi...

Jan 274 min read

blog.jcosta.tech

AI Drives, You Direct

I've tried contributing to open source before. It's a lot of work, and when your PRs aren't getting traction, it's easy to give up. Building oss-autopilot I've written before about how AI-assisted development feels like engineering management. Direct...

Jan 202 min read

blog.jcosta.tech

Why AI-Assisted Development Feels Like Engineering Management

In 2021, I was grinding to hit a deadline. It was stressful. Multiple developers were working on the same parts of the codebase simultaneously, which meant constant merge conflicts that needed constant management. We took on a lot of tech debt and cu...

Jan 63 min read

John Costa

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