Are you interested in startups, growth hacking, marketing, fintech, or data? If you're in the Sydney area, then why don't you plan to sign up to participate in the H2 Growth-Hackathon at Haymarket HQ? Over a long weekend -- from Friday evening, through Saturday and Sunday, you'll collaborate with like-minded professionals to hack for a real-life startup. The event finishes with project presentations and the announcement of prize winners.