#saas

The Laravel core of a document-signing platform: it owns users, identities, organisations, client systems, documents and their signed versions, stamps, and certificates, and orchestrates the services that sign, timestamp, render, and store — without ever holding a file.

The digital signature platform of the City Government of South Tangerang: signers prove who they are, sign PDFs to PAdES B-LTA with certificates from the platform's own authorities, and anyone can verify the result — version 2, which I designed, built and operate.