Boost Page Authority to 50+

I need an expert to increase my products page SEMrush Page Authority score from 4 to over 50. My website is service-based

Key Requirements:
- Proven track record in improving Page Authority
- Strong experience in SEO, especially for service-based websites
- Ability to develop a tailored strategy to increase PA to 50+

Ideal Skills:
- Advanced SEO knowledge
- Expertise in high-quality backlink acquisition
- Strong analytical skills to monitor and report progress

Please share your relevant experience and approach.