Who we are

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.

What We Do

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.

Ten Years.

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.

~100

engineers across five countries and five industries

10

years building enterprise data platforms

100%

organic growth, zero external funding

ISO

27001 certified, built on security-first principles

Data sovereignty isn't a destination. It's a foundation.