My professional interests have changed somewhat since 2016. (My personal interests are mostly the same.)

Since 2016, I have worked at two different companies:

  • ReactiveCore — SaaS for data transformation at scale. Using OWL/RDF ontologies and schemas, OPS-5 rules (“Reactive Rules”), Scala + Spark (backend), and Jupyter + Python (frontend)
  • dv01 — SaaS for data services connecting lenders and buyers of securitizations for multiple asset classes, including mortgages (MBS), solar/home efficiency, line of credit, and auto. Using Scala + Spark (backend), Google Cloud Platform, BigQuery

Continuing my earlier work, I am currently most interested in the following core technologies:

  • Semantic Web and linked data: Knowledge Graphs (KGs), OWL/RDF, graph databases, SPARQL
  • Rules-based systems for forward-chaining (RETE) and backward-chaining (Prolog, Datalog)
  • Distributed cloud-based systems based on micro-services
  • Relational databases (SQL), data warehouses, data lakes
  • DataBricks for end-to-end capabilities

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