JoinJam is an iOS app for musicians who have unfinished songs and need a real collaborator — not AI. Post short clips on Music Feed, jam along in sync, shape takes in a Jam Room, finish in Studio, and publish to Radio. Creators keep ownership of what they make.We’re a small Delaware company building that loop end to end. Looking for early teammates: production engineers who ship with Cursor; musicians who live in real DAWs and care about product feel; and a marketing lead who owns growth, social, and hands-on content — someone who can build the brand and the feed, not just the strategy deck.