I need a data analyst expert

Our advertising agency is looking for a data analyst professional to review 10-15 clients' data and create outlines that show the clients' ROI from working with our team. This includes data from social media, website, Youtube, Pinterest, etc. We hope to create outlines for clients through Excel or a more visual platform that will make the data easier for clients to understand. This would be an ongoing role for the contractor, as we hope to have to provide this data outline to clients on a monthly or quarterly basis.