SEO Boost for App Service Website

I'm seeking an SEO expert to improve my website's ranking and visibility.

My website is for a service-based app available on iOS and Android.

Requirements:
- Keyword research and optimization
- On-page and off-page SEO
- Building high-quality backlinks
- Regular progress reports and analytics

Ideal Skills:
- Proven SEO track record
- Experience with app service websites
- Familiarity with iOS and Android platforms
- Strong analytical skills

Please share examples of previous work and success stories.