- From Sep 1989 to Jun 2005, Mr. Le Van Tan worked at the Confectionery Production and Automation Engineering Workshop at Lam Son Sugar Cane Joint Stock Corporation.
- From May 2005 to Jan 2007, he held the position of Foreman at Milas Dairy Company Limited.
- From Feb 2007 to Sep 2011, he held Chairman of the Board of An Phat Automation Equipment Joint Stock Company.
- From Oct 2011 to May 2015, he was in charge of Vice sales manager of Lam Son Sugar Cane Joint Stock Corporation
- From Jun 2015 to Sep 2017, he held the position of Vice Chairman of the Board, Director of Lam Son Fertilizer Joint Stock Company.
- From Oct 2017 to Dec 2018, he held several positions such as: Deputy General Director of Lam Son Sugar Cane Joint Stock Corporation; Vice Chairman of the Board; Director of Lam Son Fertilizer Joint Stock Company.
- From Jan 2019 to Oct 2021, Mr. Le Van Tan held the position of Standing Vice Chairman of the Board; General Director of Lam Son Sugar Cane Joint Stock Corporation; Chairman of the Board of Lam Son Fertilizer Joint Stock Company.
- From Nov 2021 to now, Mr. Le Van Tan was appointed to the position Chairman of the Board of Lam Son Sugar Cane Joint Stock Corporation.