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Backend development on Firebase for web and mobile

100 views#2556
Listing period9 daysuntil 24.11.2026
Posted26.08.2026
Views10012 in 14 days

About the service

I build production-ready Firebase backends and connect them directly to your web and mobile interface. If you need to launch quickly, without your own DevOps team and without renting servers — this is exactly what I do every week. I set up authentication via email, phone and social networks, design data in Firestore or Realtime Database and write Cloud Functions that keep your business logic close to the data. The result is a backend that scales itself, updates clients in real time and costs exactly what you actually use.

My work covers the entire path — from an empty project to a live product. I design the data structure so that reads remain cheap and queries fast, cover everything with security rules that I check rather than guess at, and connect push notifications and analytics so you can see from day one how people use the app. For web I connect the SDK to React, Vue or vanilla JavaScript; for mobile I integrate with native iOS and Android and with cross-platform Flutter. Hosting, custom domains, user file storage and scheduled background tasks — all of this is included when needed.

You get clean commented code, a brief written project guide and a backend that can be developed further without rewriting. I explain each decision in plain language, stay in touch after launch for questions and edits and transfer complete ownership of the Firebase project so nothing is personally tied to me. Tell me what your application should do — and I'll break it down into the needed Firebase services and realistic timelines.

— Sign in via email, phone, Google, Apple and anonymously
— Firestore or Realtime Database with verified rules
— Cloud Functions, push notifications and analytics
— Integration with web, iOS, Android and Flutter

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Olga M.Mobile app development
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