Instagram Profile Creation for Lead Generation

I'm seeking a professional social media expert to create my Instagram profile from scratch. The primary purpose of this account will be lead generation to promote my mobile app service.

Key Responsibilities:
- Create a compelling Instagram profile
- Design and implement effective marketing strategies to grow the account
- Develop and post engaging, promotional content
- Maintain a professional and polished visual style throughout all posts

The ideal candidate for this project should have:
- Extensive experience in social media management, particularly Instagram
- Proven track record of lead generation through social media
- Exceptional content creation skills, with a focus on promotional posts
- Ability to maintain a consistent, professional and polished visual style
- Understanding of mobile app promotion strategies

Please provide examples of previous Instagram accounts you have managed and the results achieved.