Mobile App marketing

I am looking for an experienced mobile app marketing specialist who can help improve user engagement across different platforms. My target audience is primarily teenagers, young adults, and middle-aged adults. The main focus of this project is on improving user engagement so that my app can better reach its target audience. The platforms I would like to focus on are those of social media, such as Facebook, Twitter, Instagram, and YouTube. I would like someone who has extensive knowledge in understanding and navigating the digital world, and in growing mobile app engagement through creative strategies. The successful candidate should have a track record of success in the development and implementation of social media campaigns, app store optimization, and the creation of paid advertisements.