freelancer for firebase firestore apps hire react developer react concurrent mode freelancer for multi-tenant saas apps full stack web developer freelancer for multi-language app support dotnet developer react micro-frontends freelancer for biometric time tracking freelancer for ai powered web apps web development agency freelancer for langchain agent apps web https://softwaredevelopersvssoftw39658.blogaritma.com/34549790/new-step-by-step-map-for-software-developer-vs-web-developer