Tatarinov began his career working for several systems, networking, and consulting companies in the Soviet Union, Israel, and Australia.[6] In 1991, he co-founded Patrol Software in Australia, which made a database and systems management product.[4][7] Tatarinov served as the company's chief architect and head of research and development.[4]
Tatarinov joined Microsoft in 2002 to lead the company's Management and Solutions Division. [4] In 2007, he became the executive vice president of Microsoft Business Solutions.[6] overseing Microsoft DynamicsCustomer relationship management and Enterprise resource planning software.[8] Under his leadership, the Microsoft Dynamics business doubled in revenue. He also led the division's transition to the cloud.[9] Tatarinov left Microsoft in October 2015 as part of a management overhaul.[10]
In January 2016, Tatarinov was named the CEO of Citrix Systems. He also joined the company board.[10]
In May 2016, at the company's Citrix Synergy customer event, Tatarinov presented a new strategy for the company, which included focusing on growing core products.[11][12][13] Later that year,he reorganized Citrix and spun off the company's GoTo line of video conferencing products.[13] Tatarinov left Citrix in July 2017, having served 18 months as CEO.[2]
In February 2019, Tatarinov joined the Acronis Board of Directors to drive the adoption of Acronis Cyber Protection products and services by the enterprise and public sectors.[14] Seven months later, in September 2019, Acronis appointed Tatarinov as Executive Vice Chairman to continue building Acronis' cyber protection strategy across enterprise sector.[15]