Hii,
I am full time WordPress expert developer having 5+ years great experience which perfect suitable for this work , am able to do work 20 hours/week as you want so please share me detail for starting work sure will deliver best result.
having experience in Wordpress/Woocommerce, Wordpress theme/plugin /template development, Wordpress API, WordPress e-commerce sites, Bootstrap, HTML5, CSS3, PHP/MySql, all the CMS/Framework of PHP, Integrations/Customization of theme/plugins/API development.
Thanks