Need help updating Magento 2 products

I have just converted from magento 1 to magento 2

I am now wanting to update all of the products and add new brands

I am looking for an expert who is extremely knowledgeable working with product updates in magento.

I do not want to manually do the product updates

I want to do mass product updates via csv imports

If you have vast experience in this please contact me for an interview.

Don't waste your time or mine, If you cannot provide excellent references (they will be checked) don't bother applying
Don't waste your time or mine, if you cannot provide excellent examples of similar tasks (they will be checked) don't bother applying.

Looking for Hyderabad or Kolkata individual in particular that can work alongside our existing resources in those regions

Thank you for taking the time to reply.

regards