With 350 employees settling into its new offices and room for a total of 900, Amazon is starting to make its presence felt in Boston’s Seaport District.

The recruitment pool has a distinct Boston accent, with many of the hires coming from within the region’s thriving tech industry, said Mike Touloumtzis, Amazon’s Boston site lead.

“What I have seen is a lot of hiring from the Boston area,” he said during a media briefing and tour of the sprawling 6-story building at Summer and Melcher streets.

The hiring pattern has implications for the next phase of Amazon’s expansion, with plans to hire 2,000 employees to occupy 430,000 square feet of office space at a new building in the Seaport Square development opening in 2021.

The mix of business units at the future building has yet to be determined, Touloumtzis said, although Amazon recently indicated they will include cloud computing, speech science, machine learning and robotics engineering.

The brick-and-beam building overlooking Fort Point Channel is equipped with many of the trappings of modern tech offices, from shipping container meeting rooms to private phone booths. On a floor with a transportation theme tying into Amazon’s focus on logistics, a display highlighted the history of the horse-drawn Granite Railway from the Quincy quarries to the Neponset River.

Touloumtzis characterized Amazon’s recent growth in Boston as similar to those at a dozen tech hubs in North America, and declined to handicap the potential for the region to land the 8-million-square-foot HQ2.

“It’s viewed with a lot of speculation but we don’t know,” he said. “There are (betting) pools. People are very curious.”