Fluxzero's origin

Years ago, I launched my first tech startup with a bunch of friends. It was in a domain I knew well, so naive as I was I thought it was going to be easy. We knew what we wanted, we had the drive, so why wouldn’t it be?

We got hit by reality. To get anywhere, we first had to set up all the generic stuff: authentication, persistence, scaling, monitoring, DevOps. None of it was our actual product, yet it consumed most of our time. What we thought would take months took years. And even once we launched, we were constantly buried under technicalities. Instead of a fresh start, our launch felt like inheriting a legacy system on day one. Progress was slow. It was never the rocket ship we imagined.

Later, I joined bigger and even huge companies. To my amazement, they were dealing with the exact same problems, just with more people and bigger budgets. Looking back, it was clear: developers weren’t the bottleneck, and neither was management. The real problem was the tech stack itself, fighting us every step of the way.

This used to be true for launching simple websites or webshops too. Today, companies like Squarespace, Wix or even a vibe coding tool like Lovable, have vastly reduced that effort so you can be up and running in a day. They stopped website developers from needing to reinvent the wheel. I wanted the same but for software that is a lot more demanding.

At some point, I couldn’t take it anymore. I needed to start from zero. Instead of asking “what’s possible with today’s tech?”, I asked: “what do we actually want as developers?” I wanted tools that let me ship product, not reinvent the tech stack. I checked if what I wanted already existed but couldn’t find anything. Not a product, not even a combination of products.

So, still naive, I started building it myself. And step by step, others joined me along the way (thankfully! 😅). So began a years-long journey of forcing the tech stack to serve us, not the other way around. Sometimes it took painfully long to find the right solution, but we didn’t stop until it worked the way it should.

Out of that work came fluxzero.io, a logic runtime and cloud built to let developers focus on their business logic instead of everything else.

Fluxzero was our refusal to accept the status quo. We didn’t just want functional improvements, like cleaner code, an integrated stack that works out of the box, and effortless communication between applications. We wanted technical excellence too: performance that beats any platform (looking at you Kafka), scalability without headaches, security in the core design.

Why? Because we never want “the tech” to get in the way of shipping, whether you’re launching a startup, serving millions of users or running in a security-critical environment.

Fluxzero wasn’t built to be a workaround. We didn’t want another painkiller, we wanted a cure.

In November 2025, we finally brought Fluxzero to the public. But this platform has been in development for many years, quietly powering mission-critical enterprise systems at crazy scale. For example, Fluxzero runs the core of Dutch logistics at www.portbase.com, handling traffic in the hundreds of gigabytes per minute.

So Fluxzero became the foundation I always wished existed. We built it for every backend developer and for (almost) any application out there.

We’ve been building towards this for a while, and we think you’ll love using it as much as we loved creating it. So start kicking it around and let us know what you think!

– Rene