Started with PPR in 2004, which was acquired by CoStar in 2009.- Architect and lead developer for CompassCRE, the industry leading commercial mortgage risk analysis application. - Architect and lead developer for the PPR Portal, PPR’s main web platform for delivering content and analysis. - Architect and lead developer for the CoStar Data Explorer (CDE), an internal business intelligence and reporting tool for qualifying, combining, aggregating, and querying the various data sources used by PPR/CoStar market and quantitative analysts. - Architect and team lead for the PPR Data Foundation, an internal project to redesign and rebuild PPR’s internal data management systems from scratch.

- Implemented key functionality including connection persistence and multi-threaded connection management along with associated unit tests. - Responsible for building, coordinating and verifying all project releases. - Key member of small team responsible for all project design, development, documentation and maintenance. - Active member of development mailing list contributing support, bug fixes and project direction.

Contracting for IBM, developing and supporting software for the Hardware Common Tools division. - Lead developer for the Supplier Quality Management System, a web-based application used by IBM executives, manufacturers, and commodity suppliers for analyzing and tracking part quality. - Customized the e4eNet application, extending and integrating Issue Management with ECAD and MCAD tools. - Consulted on and supported the process of deploying e4eNet as an IBM companywide engineering collaboration tool.

- Responsible for all client-side application development including client-server communication, GUI applications, enterprise integration and 3rd party software integration. - Supervised Java development practices and implementation of e4eNet applications. - Designed and implemented multiple GUI multi-user client/server applications. - Designed and implemented a client facing scripting environment for automating common functions using Jython. - Developed and maintained a web based 2D/3D mechanical data viewing application with support for view manipulation, markup and measurement. - Pioneered the use of Ant build scripts for fully automating application builds.

UrbanSim is a state-of-the-art system for simulating urban land use, transportation, and environmental impacts. - Developed software for loading, integrating, analyzing and manipulating data from many disparate sources. - Created a GUI for configuring and interacting with the UrbanSim modeling system. - Designed and implemented a plug-in framework for dynamically loading custom built simulation modules. - Optimized UrbanSim software to reduce runtime and memory footprint. - Designed and implemented algorithms for operating on spatially located data. - Developed a viewer for vector and raster based characteristics using GeoTools mapping toolkit.

Adapted UrbanSim software for use by metropolitan planning agencies