Company
SecondMark is a Sidiora venture created to provide independent assurance for a generation of software that cannot be understood through source review alone.
Detailed positions for decisions that require more than a checklist.
Each brief defines the assurance question, the evidence that matters, the intended outcome, and the professional boundary on any conclusion.
About SecondMark
SecondMark is an independent assurance firm for complex, autonomous, AI-engineered, and unprecedented software.
Our independence
SecondMark separates technical assurance judgment from the incentives that shaped, sold, or operate the system under examination.
The Sidiora origin
SecondMark grows from Sidiora's firsthand experience coordinating machine intelligence, architecture, verification, human review, and qualification to build complex production systems.
Assurance governance
The decision rights, review controls, and evidence disciplines that protect the integrity of a SecondMark engagement and opinion.
Ethics and professional conduct
The principles governing confidentiality, evidence handling, candor, conflicts, technical competence, and the limits of a SecondMark conclusion.
Careers at SecondMark
Work at the intersection of software architecture, systems engineering, adversarial analysis, runtime qualification, and independent technical judgment.
Common evidence base
Four evidence planes. One independent conclusion.
Independence and conflict controls
Documented review and opinion authority
Transparent limitations
Begin an engagement
Bring us the system that cannot be reduced to a standard audit.
We will begin with the decision, the claims, and the system boundary.
Start a confidential conversation ↗