Need a website developer to update my existing word press website.

We are a B2B company and have a good informative website now we are taking online business more seriously so we want our website to be well optimised to realise most benefits of online traffic. Here are the basic requirements. 1. We want our website to be SEO optimised ( by a plugin ) and updated with search consoles to start getting organic traffic. 2. We want hi-tech forms such as basic lead form with captcha, opt-in forms, Exit pop up form, Quiz forms and etc. 3. We want better awareness on the usage of google analytics and how to make the best use of cookies and tags. 4. We want instant email replies sent to each lead, sent by a secure emailing server. We are also looking to hire someone who can work for hourly basis or webpage basis based on sudden or immediate requirements such as creating a new landing page or optimising existing pages. We also welcome better suggestive ideas on making the website better for achieving greater online objectives. If you have worked in these fields only reply. We are looking at the consultation on third-party plugins and integrating them on to our website. I am slightly negotiable on the pricing, andl also looking for a longer temr work relationship