Bridgewater was a leading provider of broadband access control systems. Amdocs creates customized billing and customer care solutions for mobile network operators. Amdocs aquired Bridgewater in September 2011.- worked closely with offshore developers to rescue troubled projects- designed and built carrier-grade JMS- and SOAP-based components for billing systems serving tens of millions of mobile subscribers - used agile development processes to reduce risk and deliver projects on time

Pika Technologies creates hardware and software solutions for interactive-voice-response applications, telephony gateways and custom PBX systems.- enhanced Pika's SIP Proxy/Registrar by integrating and building upon the Radvision SIP stack- introduced iterative development processes during the documentation, development and testing of Pika's 3.0 software release- added an automated unit-test infrastructure to verify functionality during the regular developer build process

RIM designs and manufactures BlackBerry smartphones.- prototyped user-interface concepts for pre-release BlackBerry devices- designed a new event notification framework/API for BlackBerry applications- held final responsibility for reviewing and selecting software release content delivered to major mobile carriers- investigated and corrected defects across all of RIM's Java applications and frameworks.

A VoIP innovator, Nimcat Networks created the first peer-to-peer, SIP-based PBX system. Avaya is a global leader in communication systems and applications. Avaya acquired Nimcat Networks in 2005.- lead designer for a team of 8 developers- provided technical oversight for an offshore team of 12 developers- 5 patents pending related to the use of peer-to-peer techniques in enterprise communications- increased Nimcat's system capacity by 50% by optimizing network communications- provided technical leadership for the 2.1 release of Avaya's SIP phone software and Avaya's Java-based SIP call recording system- helped to craft Avaya's global strategy for building robust SIP networks- led Nimcat's SIP interoperability effort- key advisor to product management, system engineering and system verification- created presentations, requirements and architecture documentation to drive features and products through Avaya's development process- co-authored several drafts for the IETF p2psip working group describing bootstrapping techniques for overlay networks- submitted a contribution to the IETF's ICE standard that improved its efficiency by 20% - 25%.

Mitel Networks is a leading provider of corporate telephone systems. - created a system that translates between Mitel's proprietary call signaling system and Megaco/H.248- constructed a SDP parser to encapsulate the media stream information transported between peer PBXs- led the software design for a branch office VoIP gateway

Vienna Systems was one of the pioneers in VoIP. Nokia is a global supplier of mobile phones and telecom networks. Nokia acquired Vienna Systems in 1998. As one of Vienna's first 20 employees, I was an influential member of the engineering team.- solely responsible for the 'CPServer' application, the central element in Vienna Systems' portfolio- mentored junior developers and interviewed potential employees- led the development team that concentrated on call signaling- collaborated with designers from other companies on joint-development projects- assisted in the design and development of an IVR application that provided 'toll-bypass' long distance calling over IP

CallStream Communications specialized in CTI and IVR applications. - specified, designed and implemented four customized voice and facsimile messaging systems for customers including the Chicago Tribune and the Re/Max Realty chain