Joomla PHP Update Expert Needed

I need a Joomla expert to update the PHP version on my Joomla site.

Requirements:
- Experience with Joomla and PHP
- Ability to ensure site functionality post-update
- Knowledge of troubleshooting potential issues

Ideal Skills:
- Joomla template and extension familiarity
- PHP version upgrade experience
- Backup and recovery processes

Please provide relevant experience in your bids.