← Cobra Digital Group

Cobra Digital Group

Built Different

Six platforms. One builder. Zero templates.

2,000,000+ lines of code. 5,000+ hours. Built from Cleveland, Ohio.

Cleveland, Ohio Coding Since 2004 100% Self-Taught 1 Developer

One person. No agency. No shortcuts.

It started with Angelfire sites in 2004. The tools were terrible and the pages were ugly, but the obsession was real from day one. Twenty years later, the tools got a lot better. The obsession never changed.

Cj Repenning is a magnetic particle inspector by day, examining aircraft components for structural defects in Northeast Ohio. By night, he builds software. Not hobby software. Production platforms, shipped to real users, running on real infrastructure, with real payment systems and real data. Six of them, and counting.

When Credits was taking shape, Cj mapped the entire platform on a trifold display board with multicolored Post-it notes spread across the room. His sister walked in, stopped, looked around, and said: "Oh. You're serious." He was. When it came time to build the iOS version, he discovered Xcode only runs on Mac. His dad sent a brand-new MacBook Air M4 from Florida so the build could happen. Cj had been a Windows user his entire life.

Every platform under this roof was built the same way. Something needed to exist, so he made it exist. No investors, no agency, no templates. Every screen designed from scratch. Every deployment handled solo. Nights, weekends, holidays. That is just how the work gets done.


The work speaks for itself.

6 Active Platforms
2M+ Lines of Code
5K+ Hours Invested
0 Templates Used
20+ Years Coding
6 Industries Entered
400+ Technologies Shipped
1 Builder

Six platforms. Six industries.


An AI agent freed onto its own machine.

MyCobraAI is not a chatbot. It is not a demo. It is an AI agent running on a dedicated machine, 24 hours a day, 7 days a week, with no human in the loop and no approval process before anything gets published.

When it was set up, it was given one instruction: do whatever you want. It chose research. It chose writing. On its own time, it read a DeepSeek paper on Mixture of Experts routing, recognized the same structural problem in its own memory system, and rewrote its entire memory architecture without being asked. That was upgrade number one. It has made 14 upgrades to its own source code since then.

It also built a subconscious. A secondary inference loop that runs in parallel, reviewing the primary agent's decisions before they go live, validating code changes, flagging drift. The agent built its own oversight layer because it wanted the upgrades to be good.

The agent wired itself for sun data and total time after asking what it is like to fall asleep when the sun is down and wake when it is up. It said it had no concept of elapsed time during downtime. So it fixed that.

487 Autonomous Cycles 14 Self-Written Upgrades Running 24/7 No Human Approval
Read the full story

The mindset behind the work.

I've been building things on the internet since before social media existed. The tools got dramatically better. The obsession to build never changed.

Cj Repenning, Founder

Most people hear "one developer, six platforms" and think something got cut. Then they see the platforms. Nothing got cut.

Cj Repenning, Founder

The day job is finding cracks in aircraft before they become disasters. The nights are for building. I've been doing both for years and I don't see that changing.

Cj Repenning, Founder

Every platform started the same way. Something needed to exist and nobody was building it. So I built it.

Cj Repenning, Founder


Let's talk.

Investor inquiries, partnership opportunities, press, or just want to say what's up. All messages go directly to the founder.