Joseph is a software engineer & architect with over 25 years’ experience, who started writing mobile apps before mobile apps existed. He contributes to IETF and OpenID Foundation working groups, including the FAPI group where he helped write the security profiles used by most OpenBanking ecosystems and is a co-chair of the Digital Credentials Protocols working group. He’s helped companies around the globe architect and deploy secure systems, particularly when mobile apps are involved. More recently he’s been focussed on verifiable credentials, in particular the OpenID for Verifiable Credentials family of specs, along with the associated specifications like mdoc/mdl, SD-JWT VC and the interoperability profiles.  Joseph is CTO at Authlete and Standards Specialist & Certification Director at the OpenID Foundation.