React Based Front End Developer

I am looking to hire a freelancer who can build our company's website based on React (+ Other front-end technologies). We want someone who has just enough experience and is a mix of value and expertise. We are an early-stage startup and looking for a long-term collaboration. There is already a front-end team and we would also want you to groom one of our team members for a smooth delivery and KT. I am attaching a list of sample websites, how we want our website to look :

1. Sigmoidal.ai
2. leewayhertz.com
3. DLabs.AI
4. Rephrase.ai
5. jarvis.ai
6. C3.AI