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A letter from the founders

Building the trust layer for enterprise AI.

oneAI exists because European companies need AI infrastructure that is sovereign by design, compliant by default and built for the regulatory reality they operate in.

Built for organisations with high requirements for security, governance and control.

  • Tobias K.N. Hahn

    Founder and CEO

  • Mirko Tochtermann

    Founder and CTO

Tübingen, 2026

A building of concrete and glass above an alpine lake at sunset.

Why we exist

AI is changing companies faster than their controls can adapt. In Europe, that creates a real tension.

Pressure to innovate
Teams adopt AI on their own, because the gains are real and competitors are moving.
Growing regulation
The EU AI Act, the GDPR and sector rules ask for classified risks, documentation and oversight.
Real risk
Data, compliance and liability are exposed the moment a prompt leaves the company.

oneAI was created to resolve this tension: one infrastructure in which use and control are built together, from the very beginning.

What we believe

Principles, not buzzwords. Every product decision follows three convictions.

  1. 01

    Sovereignty is non-negotiable.

    Companies should not have to choose between using AI and keeping control of their data. Credible answers are built into the architecture, not added in a contract.

  2. 02

    Compliance is a product, not a project.

    Regulatory requirements cannot be an afterthought. They have to be met continuously, by the system itself.

  3. 03

    Trust is built into the infrastructure.

    Trust does not come from marketing claims. It comes from verifiable systems, a clear architecture and reliable operations.

Our story

Why we started oneAI.

  1. 01 · The gap

    We founded oneAI because AI is spreading through companies faster than control, governance and regulation can keep up.

  2. 02 · The rules arrive

    With the EU AI Act, that gap is now addressed in law. Companies have to classify risks, document their systems and monitor how AI is used, continuously.

  3. 03 · A familiar pattern

    From years in the IT market we know how mid-sized companies and large enterprises work: new technology comes first, structure, control and accountability follow later. AI is repeating that pattern.

  4. 04 · Built for speed

    Most platforms are built for speed and developer experience, not for governance, auditability and sovereignty. Compliance happens after the fact, as documentation, as a project, as a periodic review. That leaves a structural risk.

  5. 05 · Built in

    So we built oneAI to close the gap: an infrastructure in which governance is part of the system, data sovereignty is implemented in the architecture, and compliance runs with every request instead of once a year.

The team

Founders who have built companies before. With advisors from research and enterprise practice.

  • Tobias K.N. Hahn

    Founder and CEO

    • Serial entrepreneur, multimillion-euro exit in 2017
    • M&A and corporate finance background
    • Enterprise financing, controls and compliance
    LinkedIn

  • Mirko Tochtermann

    Founder and CTO

    • Serial entrepreneur, multimillion-euro exit in 2017
    • 15+ years in infrastructure and AI
    • Architect of oneAI and oneStack, AI systems in production since 2020
    LinkedIn

Advisory board

A network across research, regulation and enterprise practice

Research
Professors and experts from the University of Tübingen AI Lab advise oneAI on compliance strategy and platform development.
Enterprise
CISOs and CTOs of large European organisations work with oneAI as partners and make sure the platform meets real enterprise requirements.
Investment
Investors focused on Europe, with experience in enterprise infrastructure, cybersecurity and regulatory technology, accompany oneAI's growth.

At a glance

oneAI GmbH A German company, building in Tübingen.

Imprint
Company
oneAI GmbH
Based in
Eisenbahnstraße 50, 72072 Tübingen, Germany
Founders
Tobias K.N. Hahn (CEO), Mirko Tochtermann (CTO)
Hosting
Data centres in Nuremberg and Falkenstein, Germany, or on your own servers
Certifications
ISO 27001, 9001, 14001 and 42001
Products
oneAI, oneStack and oneDeploy

Become part of oneAI

Shape how AI is run in Europe. Controlled, sovereign and responsible.