Jonathan Rosenberg (born ) is a technologist noted for his work in IP communications. ''

Network World International Data Group (IDG, Inc.) is a market intelligence and demand generation company focused on the technology industry. IDG, Inc.’s mission is centered around supporting the technology industry through research, data, marketing technol ...

'' has referred to him as "a pioneer nthe development of the SIP protocol", and he was included in the 2002

TR35 The Innovators Under 35 is a peer-reviewed annual award and listicle published by ''MIT Technology Review'' magazine, naming the world's top 35 innovators under the age of 35. at ''Technology Review'' with lists of winners at technologyreview.com ...

list of the world's top under-35 innovators, as published by ''

MIT Technology Review ''MIT Technology Review'' is a bimonthly magazine wholly owned by the Massachusetts Institute of Technology, and editorially independent of the university. It was founded in 1899 as ''The Technology Review'', and was re-launched without "The" in ...

''. , Rosenberg is the chief technology officer and Head of A.I. at Five9, a cloud contact center provider. Prior to this, he was

vice president A vice president, also director in British English, is an officer in government or business who is below the president (chief executive officer) in rank. It can also refer to executive vice presidents, signifying that the vice president is on t ...

and chief technology officer for Collaboration at

Cisco Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware, ...

, having previously worked as

Skype Skype () is a proprietary telecommunications application operated by Skype Technologies, a division of Microsoft, best known for VoIP-based videotelephony, videoconferencing and voice calls. It also has instant messaging, file transfer, deb ...

's chief technology strategist. Rosenberg is a longtime member of the

IETF The Internet Engineering Task Force (IETF) is a standards organization for the Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and a ...

, where he has served in several leadership positions over his career. As of August 2017, he remains the 8th most prolific author of

internet standards In computer network engineering, an Internet Standard is a normative specification of a technology or methodology applicable to the Internet. Internet Standards are created and published by the Internet Engineering Task Force (IETF). They allow ...

Career

Rosenberg has worked in the

VOIP Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet t ...

field for over 20 years to date. He began working at

Lucent Technologies Lucent Technologies, Inc. was an American multinational telecommunications equipment company headquartered in Murray Hill, New Jersey. It was established on September 30, 1996, through the divestiture of the former AT&T Technologies business u ...

in March 1993 as a Member of the Technical Staff. There, he led a small SIP research lab, acted as a team lead for DSP work, and conducted research in areas of wide area service discovery. It was during his time at Lucent that he received his PhD from

Columbia University Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhatt ...

. In October 1999, Rosenberg left Lucent to serve as the chief technology officer of dynamicsoft. At dynamicsoft, Rosenberg conceived of, drove requirements for, designed, and lead software development for industry's first SIP application server. He also acted as architect and first product manager for dynamicsoft presence engine, conceived of, helped developed requirements for, and designed SIP firewall control proxy and co-developed the architecture for the dynamicsoft network application engine. When dynamicsoft was acquired by

, Rosenberg followed the company. At Cisco, Rosenberg earned the rank of Cisco Fellow, the company's most senior technical position. He drove Cisco's Intercompany Media Engine (IME) product from concept through ship and set technology strategy for Cisco's service provider voice business. In 2009, Rosenberg left Cisco to serve as Chief Technology Strategist at

. At Skype, He pioneered the Facebook video calling integration, along with many other developments. In 2013, Rosenberg left Skype to return to his alma mater

Cisco Systems Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational corporation, multinational digital communications technology conglomerate (company), conglomerate corporation headquartered in San Jose, California. Cisco develo ...

, taking the position of CTO and Vice President of Cloud Collaboration. Shortly thereafter, he was promoted to CTO and Vice President of Collaboration. In September 2018, Rosenberg reported that he is leaving

. In January 2019, he followed his former

boss

Rowan Trollope Rowan Trollope (born 1972) is an American business executive and technology entrepreneur. He is the former CEO of Five9, a publicly traded cloud software company whom Zoom announced their intent to acquire in July 2021 The deal was terminated by ...

to Five9, joining the company as CTO and Head of A.I.

Personal life

Jonathan Rosenberg lives in

Freehold Township, New Jersey Freehold Township is a township in Monmouth County, in the U.S. state of New Jersey. The township is both a regional commercial hub for Central New Jersey (home to the Freehold Raceway and Freehold Raceway Mall) and a bedroom community of New ...

with his wife and two children.

Career

Personal life

See also

References

Further reading