freelancer for firebase firestore apps hire react developer back end developer nextjs seo optimization react signals state management react suspense data fetching freelancer for design to code react wasm integration react edge computing react micro-frontends react recoil state management nextjs app development freelancer for openai integration react hook form https://sternpinballghostbustersp26803.blogsmine.com/36732364/the-5-second-trick-for-developer-software-engineer-salary