Andrey Ryabykh is appointed as director of Central Generation - the branch of PJSC Quadra - Power Generation. From 1996 to 2003, he worked as a boiler house operator, boiler department deputy chief, deputy chief engineer of HPP-SABH (heat and power plant - steam and air blowing house) of JSC Tulachermet. In 2003, he served as a consultant for the department for support of housing and public utilities operations in the housing and utilities complex department in the Tula Region.

From 2004 to 2005, he was deputy chief of the power plants service of JSC Tulenergo. In 2005-2015, Andrey Ryabykh worked as deputy chief of the repair and maintenance division, technical director and then chief engineer of the branch of PJSC Quadra - Power Generation - Central Generation.