WordPress Company (ongoing contract) for WP sites maintenance

Hello, We are looking for a COMPANY based in Europe, with a long and rich history on Freelancer.com. We won't consider individual freelances, we won't consider companies from anywhere else than Europe and we won't consider new profiles. If you have not passed the WP test on freelancer.com, we'll ask you to do it. We won't recruit you if you have not passed this test and if you are not in the 5% best. We have around 100 WP sites to maintain and we are looking for a company with several developers who will fix the issues occuring when themes or plugins have been updated. We might also ask you some little CSS adjustments here and there. This is an ongoing project. We are looking for a SERIOUS company, people who work, then test their work on several browsers, OS and mobile devices. Professionals who report to their clients several times per day. People who take the initiative of contacting plugins or themes developers to get answers to their questions if necessary. In other words, we want to work with people commited into their work and committed into quality. Our work schedules are 10:00am to 08:00pm GMT+2 (France - Europe). A person from your company must be available to talk with us during these hours, at least between 10:00 am and 06:00pm. Daily communication will be processed through a popular instant messages system. If you have no history nor on Freelancer, don't waste your time. We won't hire a company with less than 100 reviews and a rating inferior to 4.9. And we won't recruit a company for this job as long as it didn't pass the WP test at Freelancer. Best regards.