Data Sovereignty is Just
the Beginning.
Built for enterprises that refuse to hand control of their data to a vendor.
Klarrio builds data platforms that put you in control. Not your hyperscaler. Not your vendor. You.
Who we are
About us
Klarrio is a Belgian, cloud-native services firm that has been building large-scale data platforms for enterprise clients since 2016. We work across five countries with organizations in telecom, utilities, financial services, mobility, and government.
We build exclusively on open source. That means no vendor lock-in, no proprietary dependencies, and no situation where your data infrastructure is owned by someone other than you. Every platform we deliver is built to be run by your team, not ours.
Why Open Source?
Open source is the foundation. Here's why it matters.
We've built on open source from day one. Not because it's trendy, but because it's the only honest way to give enterprises full control over their own infrastructure. You can inspect it, modify it, and hand it to any engineer on your team. No licensing surprises, no vendor pulling the rug, no black boxes sitting in the middle of your data pipeline.
We work with stable, well-maintained projects like Kafka, Spark, Kubernetes, Flink. Cutting edge, not bleeding edge.
What We Do
Our services
All of our services are built around the same principle: your team should fully own and understand what we build together. We're not here to create a dependency on Klarrio. We're here to build something your people can run on their own.
Platform Engineering
We design and build large-scale, cloud-native streaming data platforms tailored to your infrastructure. No templates. No shortcuts.
Consulting
Data architecture strategy, distributed computing, infrastructure advisory. We help you make the right decisions before a single line of code is written.
Support
Your platform doesn't stop needing attention after it's built. We provide ongoing support and maintenance from the same engineers who designed and built it, people who already know your architecture inside and out.
Built to be Handed Over
We train your engineers to run the platform independently. Every engagement ends with your team fully capable of owning, operating, and evolving the system on their own.
Where We've Built
Ten years across five industries
Telecom
High-volume, real-time data infrastructure for networks that can't afford downtime. Full ownership of the platform means full control when it matters most.
utilities
Smart grid, sensor, and operational data generates enormous volumes of continuous streams that need to be processed and acted on in real time.
financial services
Data sovereignty isn't optional in financial services. We build infrastructure where your data stays yours: fully auditable, fully controlled, no third-party dependencies.
mobility
Real-time streaming data for transport, logistics, and connected systems. Resilient by design, with loosely coupled architecture that keeps moving even when individual components don't.
Government
Public sector data belongs on infrastructure you control. No hyperscaler dependencies, no exposure to foreign data regulation. Sovereign by default.
Our clients
Who we work with
Connect with us!
If you're evaluating data platform options or want to understand what vendor-agnostic infrastructure actually looks like in practice, we're happy to have a real conversation about it.
Talk to an engineer →
Klarrio (Data Sovereignty) Landing Page Form
Data sovereignty isn't a destination. It's a foundation.
© 2026 Klarrio. All rights reserved | Cookies Policy | Data Protection Notice