Engineers, cryptographers, and operators building sovereign digital infrastructure.
UltimaOS is built by a small, independent team of engineers with backgrounds in distributed systems, applied cryptography, and consumer software. We are based in the European Union and operate as an independent European company, without venture capital or strategic investors whose business model conflicts with our privacy commitments.
The core team has shipped large-scale consumer software at companies you have heard of. We know what it takes to keep a service up when millions of users depend on it — and we know what compromises get made under pressure to ship faster.
Our cryptography lead has published on lattice-based signatures, formally verified implementations of TLS 1.3, and side-channel analysis of consumer crypto libraries. We do not invent new cryptography — we deploy what the cryptographic community has standardized and audited.
Operations, customer support, and compliance are run by people based in the European Union. Our company is incorporated in an EU member state, our infrastructure is in EU data centers, our primary team is EU-based.
UltimaOS exists because we believe privacy is non-negotiable, that infrastructure should not profile its users, and that European alternatives to American tech should exist on technical merit — not just on jurisdiction.
End-to-end encryption is on for every UltimaOS account. There is no premium tier, no setting to disable it. The default is the secure one, not the surveillance one.
We are independently funded. No venture capital, no strategic investment from companies whose business model relies on advertising or data brokerage. We grow sustainably on customer revenue, not by extracting more value from users.
We use NIST-standardized post-quantum cryptography, IETF-standardized protocols, and open-source implementations reviewed by independent auditors. No proprietary crypto, no backdoors, no obscurity-as-security.
We choose EU infrastructure not out of nationalism but because the legal framework (GDPR, EU AI Act, sovereign cloud) genuinely protects users. Where the EU gets it wrong — like the eIDAS 2.0 traceability push — we say so publicly.
Every UltimaOS client is open source under AGPL-3.0. The server components are open source where their dependencies allow. Security researchers and curious users can audit the implementation end-to-end.
We publish a quarterly transparency report listing government requests received, vulnerabilities patched, and incidents. Our security page links to the latest audit reports.
Every release is reproducible from source. Updates are signed with ML-DSA-65 and SLH-DSA in parallel. Clients verify signatures before applying updates.
Independent security firms audit the cryptographic implementation, the server codebase, and the operational security annually. Audit reports are published on the security disclosure page.
The core team is composed of engineers with backgrounds in distributed systems, applied cryptography, and consumer software. We are based in the European Union and operate as an independent European company.
Independently, without venture capital. This means we are not under pressure to monetize user data, hit quarterly growth targets, or compromise the cryptography for short-term business goals.
We hire selectively. Open roles are listed on the careers page when available. We also accept unsolicited applications from senior engineers and cryptographers; write to careers@ultimaos.com with a short note and your CV.
Yes. Our advisors and any equity investment are listed on the about page. We do not accept strategic investment from companies whose business model conflicts with our privacy commitments.
The company is incorporated in a European Union member state. Our operations, infrastructure and primary team are EU-based.
Team members disclose any external commitments that could affect their work at UltimaOS. We do not engage in consulting or advisory work that would conflict with the privacy or security posture of the product.
Yes. The UltimaOS team operates under an internal code of conduct covering professional behavior, conflict of interest disclosure, and security hygiene. External contributors agree to a contributor covenant.
Email security@ultimaos.com with details, or use the responsible-disclosure form on the security disclosure page. We acknowledge within 24 hours and triage within 72 hours.