Task sequencing is a daily job of many companies of the products sector and services, where it is sought to optimize one or several objectives. It is proposed here to minimize the total execution time of all tasks. This document presents the results obtained through optimization technique Simulated Annealing. To validate the quality of the answers, test cases of the specialized literature are used and the results obtained were compared in the quality of the solution and run times. Reaching satisfactory and interesting academic results.