To expand an existing technology hub, Amazon announced that it is hiring 2,000 people in their Boston site. The technology hub covers everything from machine learning and speech science to cloud computing and robots.

The Seattle e-commerce company intends to open a 430,000-square-foot office in the Seaport waterfront development by 2021. The company said that this strategy would bring the company’s total employee headcount to more than 3,500 full-time workers.

Rohit Prasad, Amazon’s Boston-based vice president, and Amazon Alexa’s head scientist reported that the company has grown from only a handful of software developers and scientists to a team of more than a thousand who invents new capabilities and products for the millions of customers worldwide. Employees in the Boston site mostly focus on Alexa, Amazon Web Services, and Audible. The company has employed a total of 566,000 people, comprising of both full-time and part-time employees, last December.

Their Boston site is one of Amazon’s largest offices and is a finalist to acquire the e-commerce giant’s second headquarters which would create more than 50,000 jobs and cost more than $5 million. The company reported that it had invested more than $400 million in Massachusetts since 2011.

It also announced that they would add 2,000 jobs in Germany.  These additions will cater to the company’s expanding location in Berlin. Aside from Alexa, they will also focus on the continuing research and also provide support to the company’s services such as AmazonFresh and Prime Video.

Before this announcement, Canadian Prime Minister Justin Trudeau has also announced that they will post 3,000 new jobs in Amazon’s Vancouver office. Last year, it also announced plans to hire more than 100,000 workers from the entry-level sector to engineers and software developers. Amazon has been on a “hiring spree” in recent years. It was a strategy to integrate into multiple categories such as groceries, hardware, video, fashion, and cloud services.