You're non-technical and Claude Code is your best friend
Grow fast without your app falling over
Without the freelancer who disappears, the expensive agency, or the CTO who slows you down.
A safety net under what you're building, so it doesn't fall over as you grow. Set up in one week. No lock-in.
Prefer email? diego@callback.systems works too.
If you already have a CTO, you probably don't need us.
We'd rather tell you now than sell you something you don't need.
You built without a CTO. Let's keep it that way.
Who does the work
Diego and Bruno, in person. No agency, no outsourcing, a few companies at a time. Diego has built software in big industries, and Bruno comes from 37signals (opens in a new tab), the team behind Rails, the framework under Shopify and GitHub. None of this rings a bell? Even better. The less it all means to you, the more we can help.
We've shipped software that runs in production in four countries, in industries where breaking wasn't an option.
How it works
1Book a call
We get on a 45-minute call and look at how yours is built. We take on a few companies at a time, so we can really look after them.
2Rescue
In the first week we go through your app and find what's most likely to break as more people show up. We put a safety net under it. Backups, a safe place to test changes, and alarms so you hear about a problem before your customers do. All without slowing your team down.
3Monthly subscription
Your team keeps building at its speed. We make sure nothing you build limits you later, and when something breaks we bring it back fast. And we keep your costs down.
The people waiting for your app to break are going to be waiting a long time.
What you get
Nothing stays broken
If something goes down, we bring it back fast and tell you what happened, no jargon.
You never slow down
Your team keeps using Claude or Codex, and experimenting stops being scary.
All yours
Code, infrastructure and domains in your name from day one.
No lock-in
If tomorrow you hire a CTO, we hand everything over clean and step aside.
The boring, tested way
Rails conventions, the same ones behind Shopify, GitHub and Basecamp for twenty years. Boring is why it doesn't break.
Simple subscription
One flat monthly fee, no surprises and no never-ending projects.
We have to earn it every month.
Your code, infrastructure and domains are yours from day one, and there's no lock-in. You can walk any month you want.
And the first week comes with a promise. If it doesn't leave you with a safe base your team can build on and bring new people into, we keep working until it does, at no extra cost.
Questions
Who does the work?
Your team, or you yourself, backed by the knowledge Diego and Bruno have captured over the last 8 years to build production-ready software in weeks, not months.
What happens to my payments and data?
They aren't touched. The new platform runs next to what you have, and the switch comes later, layer by layer, when each piece is ready.
What does it cost?
You built this without paying for a CTO or a team of developers, and a CTO alone runs six figures a year. We're a flat monthly fee, a fraction of one hire, and we give you the exact number for your setup on the call.
What if this isn't for me?
If you already have a CTO or your own technical team, you probably don't need us. This is for founders with nobody technical in charge.
My team uses Claude or Codex, do they have to switch?
No, that's the point. They keep building with the tools they already use. The net goes underneath: reviews, test environments, and a way back when something goes wrong.
See if Callback is the right fit for you
On the call we look at how your app is built and tell you straight what's fragile and what's fine. You walk away knowing where you stand, whether or not you work with us.
Prefer email? diego@callback.systems works too.