The financing values the remote work platform at $1.2bn and was led by Silver Lake Waterman.
"Global employment is incredibly complex, involving many moving parts. Oyster emerged as a best-of-breed solution in the category to solve these traditional challenges,"
The financing round was co-led by Accel and Tiger Global to support the company's global expansion.
"This latest investment allows us to accelerate our growth at every level – doubling down on our successful product led growth strategy, adding to our customer roster, recruiting talent to our team worldwide and expanding geographically."