I am a long-time software developer/architect. I have worked in various problem domains, including backup and recovery, enterprise search, supercomputers, cloud computing, cybersecurity, and machine learning. Currently I am working for Evernym, Inc, which considers itself to be in the "trust services" business. Its business model touches topics like Self-Sovereign Identity, as well as technical topics like zero-trust architectures, zero-knowledge proofs, blockchain, verifiable credentials, and so forth. I also volunteer at the Sovrin Foundation and at Hyperledger.