Dovrangeldi Sapbayev graduated from the Turkmen Polytechnic Institute in 2000. He worked as a 2nd degree operator of technological devices of Sowetabad gas industry department of “Turkmengas” State Concern between March and December of 2000. He worked as 2nd degree mechanic of pump compressor repair tools of Special plant of Dovletabat gas industry company from 2002 to 2003 and 2nd degree operator of technological devices of recycling plant of that company from 2003 to 2006. He worked as a 2/5 degree operator of technological devices of “Dovletabatgazçykaryş” department of “Turkmengas” State Concern between 2006 and 2011, as a main engineer-technologist of Technology department of “Refi ning of gas wells and constructing gas pipelines” of “Turkmengas” State Concern, Head of the employee group on Gas Cleaning plant – 2 from 2012 to 2013. He worked as a Deputy chairman of 2nd Main Facility on “Galkynysh” gas well of “Marygazçykaryş” department of “Turkmengas” State Concern from 2013 to 2015, as a Head welder, Head Technologist of Direction of “Turkmengas” State Concern “On construction of Gas chemical complex” between 2015 and 2017. He worked as a main technologist of Gasoline production facility of “Gas refining” department of “Turkmengas” State Concern in Owadandepe from 2017 to 2018 and as a director of Gas to gasoline plant of “Gas refi ning” department of “Turkmengas” State Concern in Ahal province from 2018 to 2019. He has been working as a director of gas to gasoline plant of State Concern “Turkmengas” in Ahal province since March, 2019.