SAN JOSE — A big tech campus in south San Jose has been scooped up by a veteran development firm.

Swift Real Estate Partners has bought the two-building Hellyer Oaks Technology Park in San Jose, according to brokers from CBRE, a commercial real estate firm that provided advice on the transaction.

The office park, which totals 348,000 square feet, was bought by a Swift affiliate for $55.7 million, public documents filed in Santa Clara County this month show.

The seller was Vertical Ventures, a developer and real estate investment company. CBRE agents Scott Prosser, Joseph Moriarty, Jack DePuy, Mike Walker, Brad Zampa, Megan Woodring, and Taylor Shepard provided advice on various components of the transaction.

“Vertical Ventures has done an excellent job upgrading the property,” said Prosser, a CBRE executive vice president.

The property sale appears to represent a big profit for the seller, according to county documents.

In 2017, Vertical Ventures paid $36 million for the tech campus, which is at 5215 and 5225 Hellyer Ave. and consists of interconnected buildings.

Walnut Creek-based Vertical Ventures spent $5.4 million soon after its purchase to upgrade the office complex, which was built in 1984. Vertical upgraded the lobbies, corridors, restrooms, a fitness center, and the management office.

The campus is leased to an array of tenants, including Networked Energy Services, Power Integrations, Edgewater Networks, and Barracuda Networks.

“This acquisition is a great opportunity for Swift Real Estate Partners to finalize the repositioning of the asset,” Prosser said.