Jack Dorsey had been appointed as Twitter’s CEO on Monday. One of the reasons that the board of directors selected him as Dorsey is one of the co funders of the company. He will not be afraid of making hard decision but will must to. Dorsey doesn’t have much time to waste as well.

According to the informed sources, Twitter is planning to lay off employees next week. It is unclear that how many employees will lost their jobs during this personnel change. Some insider implied that the layoff will be carried out in most of the departments.

While laying off the employees, Twitter will also plan to recombine its technical team structure, making it more simplify and effective. Considering its technical staffs account for about half of its total employees, many of them will lose their job during this personnel change.

Twitter’s spokesman made statement on Friday and claimed that they won’t make any comment on the rumors and doubts from the public.

It is reported that Twitter’s employees grew fast in the current years. It has 4200 employees till June 30, while it only owned 2000 employees in the end of second season of 2013. Its consumers’ growth did not match its employees’ growth.

The recombination of the company in comply with the efforts that Dorsey made in the past four months. The company will be more focused. Dorsey expressed the company’s wish to clean up its business sections’ titles when he talked with Re/Code in June. Dorsey recombined product team structure in August.

The share price of Twitter rose $0.53, increasing by 1.75%, closing at $30.85 on Friday’s regular trading on NASDAQ securities market. Unfortunately, its share dropped by$0.85, reducing by 2.76%, closing at $30 due to the news of cutting employees in after-hours trading.