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About Ratifio

Document signing infrastructure for regulated industries. Audit-ready, tamper-proof, built for compliance at scale.

Our mission

Formally verified. Digitally signed.. We believe document signing should be secure, legally compliant, and free from unnecessary complexity. Ratifio is built by Ratifio Ltd, registered in England and Wales.

Leadership

DMO

Dr Michael Osei

Founder & CEO

Michael spent 15 years in financial services technology, including roles at two major UK banks. He founded Ratifio to bring defence-in-depth security principles to document signing for regulated industries.

CW

Catherine Ward

CTO

Catherine is a former principal engineer at a leading cybersecurity firm. She holds CISSP and CISM certifications and designed Ratifio's tamper-proof audit trail and encryption architecture.

The team

DT

David Thornton

Head of Regulatory Affairs

David brings two decades of experience navigating FCA, PRA, and NHS regulatory frameworks. He writes about the intersection of digital document management and regulatory compliance.

SO

Sarah Okonkwo

Senior Security Analyst

Sarah specialises in security architecture for regulated platforms. She covers encryption standards, penetration testing, and building cyber-resilient document infrastructure.

JF

James Fletcher

Head of Public Sector

James leads Ratifio's government and healthcare practice, with previous experience delivering digital transformation programmes across Whitehall departments.

DAW

Dr. Alison Ward

Regulatory Affairs Director

Dr. Ward spent 12 years at the Financial Conduct Authority before joining Ratifio. She advises regulated firms on digital compliance and writes extensively about the intersection of technology and financial regulation.

DO

David Okonkwo

Head of Security Engineering

David leads Ratifio's security architecture. With a background in government digital services, he writes about tamper-proof audit trails, encryption standards, and building technology that regulators trust.

Company details

Registered Name
Ratifio Ltd
Trading As
Ratifio
Jurisdiction
England and Wales
Company No.
15647201

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