Hello Manuelaz,
I would be very pleased to fix up your WordPress site as per the PDF document that you provided. One initial question that I have is have you considered changing / upgrading the theme you are using? The reason I ask is that many of the specific issues noted in the brief are usually managed by the theme. Your current theme can be repaired and improved as well, but if you are not thrilled with it there are many themes out there, and quite a lot of them are either free or very low cost. My company has nearly 100 professionally designed, supported and licensed themes available at no additional cost.
Some background on who I am and my qualifications... My client list and previous employers include more than 12 years working with major international high tech and financial organizations including IBM, HP, Visa and AT&T. My experience also extends to startups and smaller companies in various industries from genomic research and analysis to gourmet food products.
Please do not let my relative newness to freelancer.com dissuade you from considering my bid. With nearly 20 years of business experience, references available on request, and publicly available profiles on such platforms as Twitter and Quora to corroborate my identity and qualifications you can be assured that my services are at the quality and reliability level that you require. I hope to be in contact soon to get started on fixing up your site.
Best regards,
Luca Lepori