react developer freelancer for supabase postgres apps nextjs development company back end developer nextjs seo optimization mern stack developer react suspense data fetching freelancer for design to code freelancer for multi-language app support react edge computing react micro-frontends dotnet mvc developer freelancer for openai integration freelancer for langchain agent https://new-pinball-machines-for15701.elbloglibre.com/36388511/facts-about-web-developer-qualifications-required-revealed