Began professional activity as the software engineer in large construction company. To Citrix Systems came in 2007 to a position of the system engineer. Now, holding a position of the head of system engineers, is the official technical representative of Citrix Systems company and is responsible for training and advanced training of engineering list of partners and distributors, testing of solutions and work with technology partners. Is the author of articles in the Russian IT magazines, the participant of group of authors of the textbook on information security
For October 28, 2015 Sergey Halyapin works as the chief engineer of the Russian representative office of Citrix.
Earlier - the Head of department of the Citrix system engineers in Russia and the CIS countries