Full Stack Developer for Backend and Integrations

I need a full stack developer to help me complete the back end build for my web app, as well as do integrations across payments, email services, and more. The ideal candidate will have experience in Node.js, PHP, and JavaScript, and be able to work on both front and back end tasks. This is a part-time role with a project scale of small to medium, expected to last 1 to 3 months.