Hi;
I can monitor and optimize the queries. Even better, I can write functions to intercept useless Wordpress queries, mostly caused by innards of Wordpress. WP needlessly query db for functions like get_bloginfo(), for example. My feeding these functions with constants, query count will get lower.
Another downside is, joins. For example, Wordpress queries posts, term_taxonomy and taxonomy_relations tables by joins to get posts from a specific category, for example. It also offers inner caching for these queries, but disabled by default. Also, using transient API to cache some widgets for example, helps minimizing queries.
Plugins are generally awful. I can optimize most of them, too.
I'll split my bid into 3 milestones. If you cant see any improvement after first milestone, you dont need to pay any further, but I believe you'll be satisfied by the results.
I'm looking forward to work with you.