San Francisco-based Instawork, an on-demand staffing app for gig workers and hospitality businesses, has completed with $18 million in its latest financing.

Instawork secured the funds from Spark Capital, which in conjunction with the funding will join the Instawork board.

Additionally, other investors in the funding including GV, Burst Capital, Benchmark, Y Combinator, Tuesday Capital and SV Angel also joined the round.

Instawork is planning to use the net proceeds from the funding to accelerate expansion across the U.S.