mobile first wordpress theme ontwikkelen /aanpassen

Hoi Allemaal, Ik zoek een ontwikkelaar die me kan helpen een volledige wordpress theme op te zetten op basis van bootstrap 4. Looking for a wordpress developer to build a mobile first ( not responsive) theme from scratch. I'm not looking for an existing theme or plugin, I'm also not looking for a responsive theme. I need a developer who has proven experience building mobile first sites Site is an affiliate review site, I have an old custom template as an example and a start for a new theme by a dev that stopped to work on the project. The main reason for me to build a mobile first theme : SPEED , and overall better user experience ( more and more mobile users. In total, I need a homepage and layouts/ designs for 3-4 types of inner pages As I'm going for speed there are some requirements as for plugins I want to have replace by code in the backend. Im also using some specific plugins ( mentioned below) that should work seamlessly with the new theme. For technology I want to recommend bootstrap 4 - but I'm open for alternatives Css has to be fully written and as condensed as possible The whole theme should be optimized for speed ( no external scripts to be used if really not needed) also no jquery should be used Some requirements -no footprint should be visible Plugins used to optimize speed : - w3 total cache + shortpixel + autooptimize - will take care of lazyloading images / caching etc Plugins for functionality - Yoast seo premium - ACF content anal for yoast / acf pro/ acf/ - classic editor -OMGF > save google fonts locally -Really simple ssl ( manage ssl) Custom functionalities Custom post import /export > to manage pages and posts from excel ( I have this built already) Key Design principles- backend -scripts inserted in code ( like GTM) Minimal Requests and page size- full load time should be under 1s for all pages server requests under 30 http requests: reduce external JS / combine into one // external stylesheets, try to avoid Main ones to avoid : fonts should be locally hosted Jquery do I need it? / cookie consent box ? > should probably be custom built Mobile 1st We start from mobile page and work upwards to bigger screen for mobile : Search is key, clear big CTA, contrasting colours, small short sentences, one image per product, no carrousels / reduce page load. SEO design principles: To be added later ( will be mostly guidelines for use of Headings/ Schema / alt tags/ ID tags etc Key pages: Front page, product reviewpages, Article page, EAT pages ( privacy policy/ team/ terms/ ...) CRO elements on page: Default font 16 px, clear contrasting link colour( a contrasting tone so it stands out), Big CTA buttons. Start your reply with "mobile second" so i knowyou read the brief in full, also make sure to add mobile first wordpress sites you have built so I know you understand the job and have the needed skills. Many thanks,