Resolve error on wordpress site

We need an experienced WordPress developer to diagnose and fix a critical error on an established website immediately. The site is currently showing the standard "There has been a critical error on this website" screen, blocking access to both the front end and the /wp-login.php dashboard. We have already tested deactivating plugins via SFTP, but the issue persists, indicating a probable theme conflict, corrupted core/.htaccess file, or a server/PHP version mismatch. Responsibilities: Gain access via GoDaddy Managed WordPress / SFTP / SSH. Enable WP_DEBUG to identify the exact source of the PHP execution error. Resolve the underlying file conflict, theme issue, or PHP version incompatibility. Restore full functionality to the website and /wp-admin login dashboard without loss of site data. Requirements: Proven experience with WordPress troubleshooting, PHP, and MySQL. Familiarity with GoDaddy hosting infrastructure and cPanel/Managed WordPress tools. Strong knowledge of SFTP, .htaccess, wp-config.php, and standard WordPress recovery procedures. Fast turnaround time—this is an urgent task. To Apply: Please submit a brief message outlining your experience with WordPress site recovery and your immediate availability to start.