Founding Product Engineer — Build the Next Hit

Mozart AI is seeking a founder-level builder to own our next big product. You’ll work directly with the CEO to uncover demand, then design, code, and ship a hit that people return to daily. This role demands hands-on ownership, rapid experimentation, and a relentless focus on retention.

You’ll be measured by product-market fit, growth signals, and the speed at which you convert bets into real users. This is an intense, in-person role in London for a creator who wants to ship something lasting.