Professional and clean looking website inside shopify

My name is Nick, I'm looking for a specialist to help me build a simple but nice looking website for my conference. The website must contain marketing automation apps for email personalization and re-targeting purposes once they register to the social media conference.
The target audience are mostly females (ages ranging from 18-40) who are focusing on increasing their social media following and monetize their accounts.
I would like to know more about your service, time frame, prices, etc.

I want to start as soon as possible.

I want to start as soon as possible, let me know