SEO Site Merge Expert Needed

I need an SEO expert to help merge two of my websites, dpboss.boston and spboss.mobi, into a single-site structure with combined content.

Requirements:
- Retain both domain names after merging
- Improve Google rankings by eliminating negative impact from dual sites

Ideal skills and experience:
- Proven track record in SEO and site mergers
- Strong understanding of Google ranking factors
- Experience in managing multiple domain names

Please provide a detailed plan and timeline.