I need B2B LinkedIn posts written

I need support with writing LinkedIn posts for a financial services client. The freelancer must have regular availability during client working hours (9am - 5:30pm) and be available several days per week.

The client provides briefs, for which we write the content and produce images, using templates supplied by the client in Canva.

Strict adherence to the client's brand guidelines and 'tone of voice' is necessary, so I need someone with strong attention to detail.