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Joe Fernandez @joenandez.com · 18h

We’ve also noticed Sonnet 4.5 is incredible at refactors, so getting files back under 400 lines or extracting to get functions under 75 is so easy we don’t even check anymore as long as tests are passing.

Joe Fernandez @joenandez.com · 18h

Works really well. Can focus on features and less on fighting failing tests, linting issues, etc.

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Joe Fernandez @joenandez.com · 18h

While Slog is chunking along, we are shipping next set of improvements in a sub worktree we can merge back in when ready - usually into a clean branch.

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Joe Fernandez @joenandez.com · 18h

We have test-lead subagent stuffed with canonical test patterns from our actual codebase that does all the actual work, while primary agent orchestrates the plan/workflow and parallel subagents.

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Joe Fernandez @joenandez.com · 18h

Current process is working well (1) an autonomous code/review/validate loop with happy path/sad path TDD and atomic commits (loose lint rules), then (2) our “Slog” agent takes over and runs strict lints and aims for the 100% test coverage in the primary feature branch.

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Joe Fernandez @joenandez.com · 18h

We’re experimenting a lot to go faster with AI while maintaining test coverage & clean strict lints.

Goal is to ship insanely fast and have zero fear of breaking anything.

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Joe Fernandez @joenandez.com · 1d

Legit, we're going to need Claude the Code Reviewer to get harsher and look deeper. This is getting automatic now with Sonnet 4.5/Codex and our established workflows! 🤣

Joe Fernandez @joenandez.com · 1d

Using Haiku in my /handoff and /resume_task slash commands is so amazing -- so much faster to transition across threads and maintain context.

Joe Fernandez @joenandez.com · 1d

SunoAI is one of the most wild technologies I’ve ever played with.

We’ve been uploading my old songs I wrote in college and … just absolutely wow.

So I’m going to work on them and post them to Spotify.

Maybe even experiment with some Sora generated Tik Toks for videos.

Should be fun!

Joe Fernandez @joenandez.com · 1d

I say this with complete seriousness.

I’m starting an AI Native band.

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Joe Fernandez @joenandez.com · 2d

I wish Slack had a "posts" format where you could turn a given channel more into a threads/x/LinkedIn style feed.

We have "#{user}-ramblings" channel, but the chat/messages format makes it hard to visually distinguish between separate topics.

Reverse chron feed makes such a big difference

Joe Fernandez @joenandez.com · 2d

Haiku 4.5 is not as good at calling subagents, which is a shame!

Probably will stick to Sonnet 4.5 and then have dedicated subagents/prompts that use Haiku 4.5 vs having the primary model in the primary agent thread by Haiku.

Joe Fernandez @joenandez.com · 2d

I have never had more fun in my entire life than I am working on @newjunehq .

Every single day I cannot wait to get to my desk.

I truly feel like I was made for this. It took me a while to get here, and that's a long story, but I'm here.

I do not intend to leave.

Joe Fernandez @joenandez.com · 3d

Haiku 4.5 comes out, started a single task and immediately hit my weekly limit 🫠 Resets tonight but I have so much fomo. Looks super fast.

Joe Fernandez @joenandez.com · 6d

This is how a simple way to think about building products when AI is getting so smart so fast:

When intelligence becomes infinite, context is the constraint.

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Joe Fernandez @joenandez.com · 9d

I retain that Anthropic/CC’s greatest risk is a model agnostic competitor catching them on the tooling (hook, slash command tool, etc), so they gotta keep moving fast.

Plugins for example - really promising.

Joe Fernandez @joenandez.com · 9d

Codex and Factory Droid are great, but if you care about building systems to scale agentic coding - Claude Code is just second to none and keeps getting better.

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Joe Fernandez @joenandez.com · 9d

We're now starting to build background agents to automate some of the tedious stuff so we can focus more on building features -- and he's pushing the hardest because he gets so annoyed 🤣

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Joe Fernandez @joenandez.com · 9d

Its been fun working with @tomf009 on @newjunehq. He started off more of a skeptic when it comes to agentic coding, and now he is a complete convert.

Insane to watch an already incredible engineer figure out how to accelerate himself. Its wild.

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Joe Fernandez @joenandez.com · 11d

We truly think there has never been a better time in human history to have wild, almost reckless ambition.

Ultimately we’re a startup. The only guarantee is that it will be hard.

But if we fail, I *can* guarantee that it won’t be because we thought too small.

L.F.G. 🚀

Joe Fernandez @joenandez.com · 11d

1. It’s never been easier or faster to write software, and right now is the hardest it will ever be.

2. Entirely new kinds of products/features that were impossible months ago are now possible.

3. Every month, new foundation-model capabilities unlock even *more* of the previously impossible.

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Joe Fernandez @joenandez.com · 11d

AI has fundamentally changed how products are built, it has fundamentally changed the way companies are built, and it has fundamentally changed the *kinds* of products & companies that can be built.

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Joe Fernandez @joenandez.com · 11d

So, why leave a great role working on AI + Wearables at Meta to do this?

“AI has just transformed every industry and every business. Every possible piece of commerce and enterprise — software, consumer, defense — is going to be reinvented….” — Steve Blank, 2023

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Joe Fernandez @joenandez.com · 11d

We’re onboarding early testers soon (our Founders Club) — if you’re golf-obsessed like us, we’d love your help shaping the product (bonus, you get better at golf or we die!).

👉 Join the waitlist (or follow along!): www.newjune.co/

New June Golf

Pro-level clarity for golfers ready to see their work pay off. Join our waitlist for early access.

newjune.co

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Joe Fernandez @joenandez.com · 11d

New June is an AI-native golf club that gives every golfer their own personal golf superintelligence and frictionless access to top golf instruction for a fraction of today’s prices.

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