Gummy Candy Recipe Development & Formulation (Caffeinated Sour Gummies)

I'm launching a caffeinated sour gummy candy brand inspired by real drinks - coffee culture, South American traditions, and classic cocktails - and need a confectionery/food science expert for a paid R&D session to prototype 2-3 flavors: an espresso-citrus 'Espresso Sour,' a tereré/yerba mate-inspired 'Mate Sour,' and possibly a kola nut-lime 'Cuba Libre Sour.' All are meant to be genuinely caffeinated and unmistakably sour. I have v1 flavor briefs already written (target profiles, acid preference, ratio logic, ingredient notes). Looking for hands-on gummy formulation experience and ideally some familiarity with dosing caffeine from natural extracts. NYC-based preferred for in-person work, but open to remote if your formulation expertise is strong. One-time paid project to start, with more work likely if it goes well.