Siteground Website Technical Audit

I'm in need of a comprehensive website audit specifically focussed on identifying and resolving technical issues. The audit's primary aim is to optimize my site's performance and also improve user experience by rooting out fatal and critical error codes.

Key Requirements:
- Identify error codes on the Siteground hosted website.
- Propose practical solutions to resolve critical and fatal errors.
- Suggest ways to enhance website performance and user experience.

Ideal Candidate:
- Experience in troubleshooting Siteground hosted websites.
- Proficiency in diagnosing and fixing fatal and critical error codes.
- In-depth knowledge of website performance optimization.