Avtandil Guntaishvili graduated from Georgian Technical University, Faculty of Engineering Geology with a Bachelor’s degree in 2012, and in 2014 - from the Faculty of Hydrogeology of Georgian Technical University and was awarded a Master's degree in hydrogeology.

In 2013, Avtandil Guntaishvili started working as an assistant geologist monitoring water resources in the Mukhrani Valley; in 2015-2016 he worked as a chief specialist of the Geology Unit of the Ministry of Environmental Protection and Natural Resources of Georgia. In 2016-2019 he was an engineer-geologist at Tuski Geology Group LTD.

In January 2019, Avtandil Guntaishvili started working in the Quality and Technology Unit of Anagi Construction Company, initially as a quality engineer and then starting from January 2020 - as a chief quality engineer.