Dorsey served as Twitter's CEO until 2008 when he became the company's chairman, and Evan Williams took over the role.
Dorsey ໄດ້ຮັບຫນ້າທີ່ເປັນ CEO ຂອງ Twitter ຈົນກ່ວາປີ 2008 ໃນເວລາທີ່ລາວກາຍເປັນປະທານຂອງບໍລິສັດແລະ Evan Williams ໄດ້ຮັບຕໍາແຫນ່ງ.