Software development for an OSS embedded analytic database. Implementation and extension of aggregate, window and join operators, including state-of-the-art algorithms. Implementation and documentation of temporal analytic functions.

Software development and data modelling consulting, with an emphasis on climate and energy applications.

Worked on a number of research projects in the data processing area, including non-standard join algorithms, temporal analytic library design and interactive text cleaning. Mentored research interns and gave regular talks to varied audiences (research, engineering and customers) on my work.

Analytic database implementation, database connectivity, architecture and general development for a new data visualisation technology.First project as the 5th employee was rearchitecting the original query generator to be extensible - an effort that was so successful that number of supported query engines has risen from 4 to over 60 in the past 15 years. Based on this work, designed the extract architecture for handling slow databases by using a faster engine when available. Primary architect and implementor of the Tableau Data Engine, a bespoke column store with native Tableau semantics for use when no performant engine was available.Other projects driven by the need for flexibility at a start up, included building the original Tableau Server REST API and C++ back end, creating the unit test harness and being the configuration manager (CVS and later in Perforce).

Development of a background media delivery and display system. Designed multi-platform client, client server communications protocol and automated system testing.

Contract programming on a wide range of projects, including full lifecycle development of a major desktop application, e-commerce back end engineering and porting of natural language processing tools. Design, development, marketing, sales and support of company developer tools. Financial management of the company.

Contract programming on a range of projects, including development of a streaming media client using novel algorithms, and work with a major management consulting firm.

Development of desktop text search and indexing systems, including some novel uses of genetic algorithms.

Invention and development of a novel speech synthesis methodology designed to mimic an individual speaker's voice.