Help me in completing the backend of my wesbite

My website is in making but due to some unfavourable circumstances my developer cannot continue the work so there is some work left in back end , which is 1) strapi CMS(setup is done, configurations are done) you have to make changes in modules so that I can upload data through it. 2) setup strapi in jayants local computer / or host it in a EC2 instance in AWS and give its access to me 3) in frontend , make all api Integrations. 4) in frontend, make any changes required from me. and here i am listing the technologies used frontend - next js, react js backend - strapi CMS, Node js database - postgreSQL hosting - AWS s3 (for static files), AWS EC2(for website hosting), AWS route 56(for DNS Mapping)