Why I Started Kerrberry Systems

TL;DR

• Small teams are stuck between expensive enterprise vendors and overstretched internal IT
• Kerrberry Systems builds custom software that solves real problems — web apps, APIs, real-time features
• I use Elixir and Phoenix — battle-tested at Discord, Pinterest, and Amazon Robotics
• I’m tired of building things I don’t own — I want to work with people who’ll actually use what I build
• Ready to talk? No sales pitch, just a conversation

After 8 years building software at companies like Amazon Robotics, GridPoint, and LUCI, I’m stepping out on my own.

This isn’t a retirement. It’s not a break. It’s something I’ve wanted to do for a long time: build software that actually matters for people who need it.

The Problem I Keep Seeing

At big companies, I’ve watched small teams struggle to get the software they need. They’re stuck between enterprise vendors who charge six figures for bloated solutions and internal IT teams who are stretched too thin to help.

Meanwhile, the actual problem — the thing that would genuinely make their work better — goes unsolved. Or it gets solved with spreadsheets and manual processes that waste hours every week.

I’ve been on both sides of this. I’ve built the complex systems at scale. And I’ve seen the small teams who just need something that works.

What I’m Building

Kerrberry Systems is a software consultancy focused on building custom applications that solve real problems.

Not enterprise software. Not consulting theater. Just working software, built by someone who’s done this at scale and knows how to make it simple.

I specialize in:

• Greenfield web applications — Starting from scratch with modern tools
• Backend systems and APIs — The infrastructure that makes everything work
• Real-time features — Live updates, dashboards, collaborative tools

My weapon of choice is Elixir and Phoenix — a stack that’s been battle-tested in production at companies like Discord, Pinterest, and yes, the robotics systems I built at Amazon. It’s fast, reliable, and doesn’t require a team of 20 to maintain.

Why Now?

Honestly? I’m tired of building things I don’t own. Of shipping features that disappear into a corporate backlog. Of knowing that the software I built will be rewritten in 3 years because someone decided to switch platforms.

I want to build software for people who will actually use it. Who will call me when something breaks. Who will tell me when it’s working well.

That’s what Kerrberry Systems is about.

What’s Next

If you’ve got a project in mind — something you’ve been putting off, or something you’ve tried to build and couldn’t quite get right — I’d love to hear about it.

No sales pitch. No pressure. Just a conversation about what you’re trying to do and whether I can help.

Schedule a call and let’s talk.

David Kerr is the founder of Kerrberry Systems. He’s spent 8 years building software at Amazon Robotics, GridPoint, and LUCI, and 4 years before that in finance at Capital One. He lives in Colorado and believes software should be simple, fast, and actually useful. Find him on LinkedIn or GitHub.