Gary Hallmark Email & Phone Number

Portland, Oregon, United States

Developing research prototypes for next-generation cloud-native infrastructure for Oracle Business and Healthcare Applications, involving the following cloud resources and open-source tools:- Oracle digital assistant, LLMs, generative AI-- generating Python code from natural language prompts-- generating process and decision models from natural language prompts-- generating test data from natural language prompts- Oracle integration cloud- approval processes and other business processes- decision services and business rules- cloud infrastructure -- object storage, serverless functions, event streaming- data science tools -- Jupyter notebook, Python, Pandas, Matplotlib- process mining tools -- Prom, PM4Py- robotic process automation

Portland, Oregon Area

Architect for Oracle Process Cloud Service (business processes, business rules, workflow, and more) and new Decision Modeling Service. Retooled to adopt new cloud development tools and principles - git, maven, RESTful design, distributed cache for elasticity, reuse of popular open source building blocks - Springboot, gRPC, Kafka, Docker, JavaCC. Modern UI - Javascript, JQuery, HTML5, CSS.Practicing scrum, as product owner for distributed team.Leading development of a Decision Modeling product based on OMG DMN. Invented DMN FEEL language. Co-chaired DMN standards committee, and co-authored the standard. Implemented fully compliant FEEL interpreter, including decision tables, as a RESTful web service and JQuery app.

Portland, Oregon Area

Oracle Middleware Architect. Experience with research, design, implementation, and integration of Java and XML based middleware technologies, including Weblogic, XML database, JAXB, security, fault-tolerance, SOA, web services, application integration, connectors and adapters, message oriented middleware and JMS, business rules, business processes (BPEL and BPMN), workflow management systems, object-relational mapping, domain-specific languages, Swing and JSP UI development supporting advanced editing features such as undo/redo, diff/merge, internationalization, filtered choice lists, and incremental validation. Work on standards including OMG Corba, J2EE (JMS, EJB), W3C RIF (co-author), and OMG DMN.Patented a fault tolerance algorithm.

Redwood Shores, Ca

Invented Oracle distributed transaction technology and received Oracle's first patent. Invented Oracle parallel query technology, and managed Oracle's advanced database replication project. Several more patents in these areas.Participated in SQL standards efforts.

San Jose, Ca

Researched and prototyped hardware and software for a "database machine", similar to Teradata of the era. Interesting that Oracle is still working on this problem, as the exponential growth of data always seems a bit larger than the exponential increase in memory and processing power.