Need someone to create a Lottie (for IOS) compatible short animation in AE (read before bidding please)

See sample video below. I need a single letter intro with the letter A (bubbly 3D looking letter) walking into view with legs and sitting down (legs disappear once sat). The animation must meet all the Lottie IOS native requirements found here: [login to view URL] (read carefully). Payment will be released once the animation is tested and fully functional on IOS (very important). [login to view URL] There is potential for more work if all goes well.