Petabyte-scale data analysis and warehousing.Ad operations with exposure to the major players, including AppNexus, OpenX, FBX, Google Ad Exchange and AdSense and PubMatic. Extensive API integrations with DFP (in Clojure) and AppNexus (in Scala) for retargeting, reporting and optimizing revenue.High-performance algorithmic shopping platform for multiple verticals built in Scala and Python on the Lift framework, backed by Postgres, redis and ElasticSearch datastores.Web crawling, natural language processing and semantic analysis to support an in-house ad platform.

Worked on the server and client SKUs of Windows to ship Microsoft's identity management, single sign-on and federation product suite: Active Directory Federation Services 2.0, the Windows Identity Framework and CardSpace.I focused primarily on protocol correctness for SOAP and REST-based authenication protocols (SAML, OpenID, WS-Federation, WS-Trust) and ensured our products achieved certification as being interoperable with other vendors. Also contributed to threat modelling, testing and assisting customers and vendors via phone, e-mail and in-person.

Software consulting and resource management line-of-business software company; clients included one of the largest school boards in Canada.

Extended Java-based application development framework and added features to a line-of-business application for the financial industry.