MS Sharepoint Site

I am looking to create a Content Management system Sharepoint site to be used by company employees. The site will require custom features, in order to facilitate the storage and retrieval of data, utilize the platform for document collaboration, and meet the specific needs of my company. The Sharepoint solution must be secure and reliable, ensuring data is protected and backed up. I am looking for a skilled freelancer who understands the technology and can provide a quality solution that is both efficient and cost-effective.
Our company already uses Office 365 with OneDrive, Outlook, Planner and Teams.