HTTPS Implementation on My Website

I'm looking for a professional with experience in SSL certificate installation and HTTPS implementation. My website and its forum subdomain, both need to transition from HTTP to HTTPS. The domain files are hosted on Site5.

Key Requirements:
- Install SSL certificate on both my primary domain www.jumaradio.com and its subdomain www.board.jumaradio.com
- Transition all mostly static pages and one phpBB forum subdomain to HTTPS
- My pages use mostly relative links to my site but also absulute URL links to my site
- Ensure secure, uninterrupted access for all site visitors

Ideal Skills and Experience:
- Proven track record of SSL certificate installation and HTTPS implementation
- Familiarity with Site5 hosting
- Strong understanding of web security measures
- Prior experience with static pages and forum subdomains