GTM to Matomo Tag Manager migration

Searching for Experiencied Matomo freelancer to consult and code implementation
We are planing to migrate from Google Tag Manager to Matomo tag manager.
We have over 200+ active tags, Enhanced Ecommerce integration, Floctory integration.
Also we are planning to shut down Google Analytics and run Yandex Metrica.
Google Big Query → Clickhouse data base migration.

Please, tell me your experince, your timezone/country, your price per hour?