E-Commerce Assistant

Growing online Furniture and Home Decor store based in the UK is looking for an Administration Assistant to work on a part-time basis and help with all aspects of growing the online store. Duties will include:
Stock take - checking suppliers stock and updating all spreadsheets, internal records and Magento (e-commerce store)
Uploading Products - Uploading new products on Magento for the live site and and internal spreadsheets.
Booking couriers online - Facilitating customer orders and arranging couriers
SEO and Content Writing - Picture labelling, writing Meta Descriptions and Writing Content for Products
Web Support/Development - This is not a requirement but would be ideal to help with the support of Magento and development if possible.
Marketing - Creating specials and promotions for products on the site and creating graphics to do this over picture images and so on.
Ideal candidate: Looking for a very experienced Administration Assistant who has worked within eCommerce previously and understands digital marketing. Must have exceptional English speaking skills and advanced writing skills (writing test will be used to assess this). Previous Magento experience will be highly regarded and also someone that has experience with content writing and SEO would be a benefit. Experience in Goggle Adwords could be a help too.
Must be happy to offer all round general support to company Director at least 3 days per week for at least 3 months - ongoing.