Bigcommerce Expert wanted! Provide changes and ongoing support with Bigcommerce based store

HI, We are looking for a person or persons that are experts at Bigcommerce sites. We currently have a big commerce site up and running and its great but there are some changes that we would like to have made away from the standard template such as layout and also some things to be added to the design and also taken away. We would also need support in linking up various apps to the online store such as gmail and mail chimp and maybe other apps. We would need some changes to be made within the next couple of days, I think about 1 or 2 days worth of work and then after that we would be looking to have someone work with us from time to time to get things updated or changed as we grow, maybe once a week. Experience dealing with Bigcommerce is a must and some proof of past work would be great. The most important thing for is how fast you can work, we may suddenly want to have something changed on the site within the next 24 hours and if you cannot do it for a few days then that is not going to work for us. We are looking for someone that makes suggestions for us too, maybe they see something on the site that can be improved and that person can help with it… this is the type of person we are looking for. Thanks Simon