freelancer for firebase firestore apps nextjs development company freelancer for multi-tenant saas apps web design full stack web developer react edge computing dotnet core development react component-driven development freelancer for biometric time tracking nextjs app development freelancer for openai integration modern web design vue.js development freelancer for heroku apps https://softwaredevelopersonet69778.blogpostie.com/57654630/new-step-by-step-map-for-software-developer-vs-web-developer