WE ARE HIRING • WE ARE HIRING • 
Backend & Cloud
Firebase Full-Stack Development

Firebase Development Services - Realtime Firebase Backends
Powered by Google Cloud

We build scalable mobile and web applications powered by Cloud Firestore, serverless Cloud Functions, FCM push notifications, and Firebase Authentication delivering instant real-time data sync with zero server maintenance.
300+Firebase Apps Built
sub-50msFirestore Query Latency
99.99%Google Cloud SLA
Since2019
Core Capabilities

Google Cloud Firebase Backend Engineering

From Cloud Firestore database architecture to FCM push notifications and serverless Cloud Functions, we build scalable Firebase backends.

Cloud Firestore & Realtime DB

NoSQL document database modeling optimized for sub-50ms query speeds and offline data sync.

Node.js & Python Cloud Functions

Serverless backend event triggers responding to Firestore mutations, HTTP calls, and cron schedules.

Firestore Security Rules

Strict declarative security rules auditing auth tokens, request payloads, and schema validation.

Firebase Cloud Messaging (FCM)

Targeted cross-platform push notifications for iOS, Android, and web with user topic segmenting.

Firebase Auth & Phone Verification

OAuth social sign-in, Phone SMS OTP verification, and custom claims for role-based access control.

Cloud Storage & Firebase Hosting

Secure media storage buckets with CDN distribution and automated SSL static web hosting.

Why Choose Mind Stack Labs

Realtime Speed. Zero DevOps.

Firebase eliminates traditional server ops, letting your mobile and web apps sync real-time data seamlessly while scaling automatically on Google Cloud.

Why Firebase for Your Backend?

  • Sub-50ms real-time data sync across web, iOS, and Android clients
  • Zero server maintenance powered by Google Cloud infrastructure
  • Built-in offline persistence caching for seamless offline app experience
  • FCM push notification infrastructure reaching millions of mobile devices
  • Granular security rules language controlling database document access
  • Pay-as-you-go serverless scaling from MVP to millions of daily active users
Certified Firebase & Google Cloud team since 2019
Firestore schema & Security Rules experts
300+ web and mobile Firebase backends deployed
Dedicated Firebase lead engineer per project
Clean TypeScript Cloud Functions & Firebase CLI configs
Complete IP ownership & NDA protection guaranteed
Firebase billing optimization & query index tuning
Free 30-day post-launch Crashlytics & performance checks
Industry Expertise

Industries We Empower

Building real-time mobile and web backends engineered for fast-paced consumer and enterprise applications.

Mobile Apps & Chat

Realtime Messages & FCM Push

E-Commerce & Food Delivery

Live Order Status & Driver Sync

Taxi & Mobility Apps

Live Driver Location Subscriptions

Health & Fitness Apps

Offline Fitness Activity Sync

SaaS & Productivity

Role-Based Auth & Security Rules

EdTech & Learning

Live Quiz & Classroom State

What We Architect
Firebase Solutions

Firebase Solutions We Build

From Cloud Firestore databases to FCM push notifications and serverless Cloud Functions.

Firestore Document Database Design
Cloud Firestore01

Firestore Document Database Design

Optimized collection & subcollection structures designed to minimize document read counts and cloud costs.

Workflow Chain
Collection Model→Denormalization→Composite Indexes→Cost Optimization
Firebase Cloud Functions (Node/Python)
Serverless Cloud Functions02

Firebase Cloud Functions (Node/Python)

Background functions triggered on Firestore document events, auth user creation, HTTP requests, or pub/sub topics.

Workflow Chain
Firestore Trigger→Auth Hook→Stripe Gateway→FCM Dispatch
FCM Push Notification System
Push Notifications03

FCM Push Notification System

Targeted cross-platform notification engine with user topic subscription, badge counts, and deep linking.

Workflow Chain
FCM Token→Topic Group→Payload Config→Device Delivery
Firestore & Storage Security Rules
Security Rules04

Firestore & Storage Security Rules

Granular security rules evaluating user authentication, request data schema, and custom auth claims.

Workflow Chain
Auth Rules→Schema Audit→Custom Claims→Rule Tests
Firebase Authentication & OTP SMS
User Auth05

Firebase Authentication & OTP SMS

Multi-provider authentication setup supporting social OAuth, passwordless email links, and Twilio/Firebase SMS OTP.

Workflow Chain
OAuth Providers→Phone SMS→Custom Tokens→Auth Guard
Firebase Analytics & Crashlytics
Realtime Analytics06

Firebase Analytics & Crashlytics

Real-time user behavior analytics, custom event tracking, and automated mobile app crash reporting.

Workflow Chain
SDK Setup→Custom Events→Crash Reports→BigQuery Export
Technologies

Firebase Tech Stack

Google Cloud serverless infrastructure and mobile client SDKs.

FirebaseFirebase
FirestoreFirestore
Google CloudGoogle Cloud
Node.jsNode.js
TypeScriptTypeScript
FlutterFlutter
React NativeReact Native
BigQueryBigQuery
DockerDocker
Our 4-Step Engineering Process

From Blueprint to Live Firebase Production

A structured process that ensures every Firebase project is built right, secured, and delivered on time.

Phase 01

Firestore Data Modeling

Design denormalized Firestore collections & subcollections.

Document ModelDenormalizationIndex Strategy
Phase 02

Security Rules & Auth

Write Security Rules and configure multi-provider OAuth.

Security RulesOAuth SetupCustom Claims
Phase 03

Cloud Functions & FCM

Build TypeScript Cloud Functions & FCM push notification triggers.

Cloud FunctionsFCM SetupStripe Webhook
Phase 04

Deploy & Emulator Tests

Test using Firebase Suite Emulators and deploy to Firebase Cloud.

Emulator TestingFirebase DeployCrashlytics Setup
Advanced
Firebase Features

Advanced Firebase Platform Features

From Cloud Firestore bundle caching to automated BigQuery streaming exports and FCM topic broadcasting.

Flagship FeatureCloud Firestore Cache

Offline Persistence & Bundle Optimization

Configure IndexedDB and SQLite local persistence caches so mobile apps continue reading and writing data offline, automatically syncing changes once connectivity is restored.

Serverless EngineCloud Functions v2

2nd Gen Cloud Functions on Cloud Run

Utilize Firebase Cloud Functions 2nd Gen built on Google Cloud Run to process concurrent requests per instance, increasing performance while reducing cloud execution costs.

Rule SecurityFirestore Security Rules

Declarative Firestore Security Rules

Write unit-tested Firestore Security Rules with custom authentication claims (request.auth.token.role) to strictly enforce access rights on every collection.

Push EngineFCM v1 HTTP API

FCM Cross-Platform Push Notifications

Send targeted push notifications to millions of iOS, Android, and web app users based on Firestore document mutations or scheduled cron events.

FAQ

Firebase Backend Firebase Development Services Questions

Have questions about Firestore data modeling, security rules, or cloud functions? Book a free consultation with our lead.

Book a free technical consultation
Rapid Response

We reply to all Firebase enquiries within 24 hours.

Start Your Project

How do you control and optimize Firebase billing costs?

Firebase charges primarily for document reads and writes in Cloud Firestore. We optimize data modeling by denormalizing read-heavy documents, adding composite indexes, implementing client persistence caching, and using bundle downloads.

Is Cloud Firestore secure without a traditional custom backend server?

Yes. Firebase Security Rules run server-side inside Google Cloud and evaluate every single read, write, and list request against the user's authentication claims (request.auth). Unauthorized requests are blocked at the database level.

Can we connect Firebase with third-party payment gateways like Stripe?

Absolutely. We write serverless Firebase Cloud Functions that listen to secure HTTP webhooks or client triggers to initiate Stripe charges, manage subscriptions, and update user Firestore documents automatically.

Can we export Firebase data to BigQuery for analytics?

Yes. Firebase features a 1-click native extension that streams all Cloud Firestore mutations into Google Cloud BigQuery in real time for advanced analytics and SQL dashboards.
Verified Client Reviews
Verified Reviews

Client Experiences That Speak for Themselves

Real experiences from clients who worked with us to turn ideas into production products.

Mike Pettigrew

Mike Pettigrew

Ireland

Trustpilot

“Ziyad and the entire Codex Lancers team have been simply amazing to work with while creating our 11:11 The Divine Mindset mobile app. Communication was outstanding throughout the entire project. They kept us fully informed at every stage, responded quickly, and were always patient, professional and genuinely committed to achieving the best possible result. Their feedback, ideas and suggestions were enormously helpful and significantly improved the finished app. The app they have created is stunningly beautiful in every way, with an elegant, polished design and flawless functionality. They understood our vision perfectly and brought it to life even better than we had imagined. I cannot recommend Ziyad and his team highly enough. Their technical expertise, creativity, attention to detail and dedication are exceptional. We will be using them for all our future app projects and look forward to working with them for many years to come.”

Dan Brown

Dan Brown

Finland

Trustpilot

“I’ve been building with Codelancer (Ziyad and the team) for the past plus two years, and I highly recommend them to anyone in need of a reliable development team. They are deeply committed to their clients’ vision, communicate clearly, are impressively responsive, and have consistently turned complex ideas into fully functional products. Codelancer genuinely prioritizes client success. They don’t just write code -they share valuable insights, make thoughtful suggestions, and support you at every stage of the journey. Over time, they’ve become an integral part of our team, and it’s a real pleasure to work with them and have them by our side. I am very grateful to work with them and highly recommend them to all”

Gabe Hizer

Gabe Hizer

Mexico

Trustpilot

“Great communication, excellent coding work, very open to making changes as the projects have developed. My project involved several different computer languages, for Windows, Mac, iOs, and Android. It was great that they had sufficient talent in their team to pull it all together! I have been working with them for the last almost 3 years.”

NL

Nick Lavars

Australia

Trustpilot

“Partnering with CodeX Lancers has been one of the best decisions for our project. From the initial UI/UX flow design to API implementation and complete end-to-end product guidance, their team consistently demonstrated strong product thinking. They don’t just execute tasks they ask the right questions, provide thoughtful suggestions, and help refine the overall direction of the product. Their involvement went far beyond development. They contributed strategic insights, improved workflows, and ensured that both the user experience and backend integrations were properly aligned. That level of ownership truly makes a difference. Timelines were respected, communication was clear and consistent, and every discussion felt productive and solution-focused. Instead of working with an external agency, it genuinely felt like we had added a committed product team to our side. Their attention to detail, UI clarity, structured approach, and proactive mindset gave us confidence throughout the entire journey. Highly recommended for anyone looking for a dependable team that genuinely cares about both execution and long-term product success.”

Eric Verdi

Eric Verdi

United States

Trustpilot
MC

Mark Chawke

Toronto, Canada

Clutch

“Thanks to CodeX Lancers, the paywall feature was successfully implemented. The client’s notification system was also fixed, and the error-free app was launched. The team managed the engagement well and communicated excellently with the client. They were flexible and delivered great results.”

NT

Neadom Tucker

United States

Clutch

“CodeX Lancers launched the app in the Google and Apple Play Store without errors. The team was knowledgeable about the .NET platform in its first version and completed all tasks on time.”

AK

Anup Kumar

Bengaluru, India

Clutch

“Thanks to CodeX Lancers efforts, the client has received the requested mobile app. The team provides timely deliverables, communicates excellently, and maintains accurate timesheets to verify progress daily. CodeX Lancers responsiveness and commitment have been hallmarks of their performance.”

ZM

Zainab Mithwani

United Kingdom

Clutch

“CodeX Lancers successfully delivered each project phase on time and with high quality. The team provided consistent updates throughout the project and communicated primarily through virtual meetings. Their teamwork impressed the client, resulting in a positive engagement.”

KH

Kamal Hassan

Riyadh, Saudi Arabia

Clutch

“CodeX Lancer has delivered a bug-free app published seamlessly in the Apple store. The team has managed the project excellently and communicated well through virtual meetings and email. Overall, working with CodeX Lancers has brought positive results.”

OP

Opendoor Parenting

Client Partner

Upwork

“I had a great experience working with Ziya. From the very beginning, communication was clear, professional, and consistent. He quickly understood the requirements and translated them into a high-quality working solution. What stood out most was his reliability and attention to detail. Everything was delivered on time, and any feedback or adjustments I requested were handled quickly and smoothly. He was proactive when needed and always available to explain technical aspects clearly. Overall, the collaboration was efficient, smooth, and results-driven. I highly recommend Ziya to anyone looking for a skilled and dependable developer, and I would definitely work with him again.”

LA

lawpoint

Client Partner

Upwork

“Ziya contributed to the project and was generally responsive when contacted. The engagement required additional coordination and clarification on some tasks, and timelines were somewhat longer than expected. Overall, a cooperative developer with potential, particularly if project scope and deliverables are very clearly defined from the beginning.”

LA

Luqta App

Client Partner

Upwork

“Delivered consistent results on our FlutterFlow project, driving steady progress and meeting objectives efficiently. Always helpful and proactive, with a strong can-do attitude toward tasks and execution. Collaboration with the backend team and other stakeholders was smooth and effective, contributing to strong alignment and improved overall project outcomes. We have been working with Ziya and his team on three major milestones, and overall, it has been a productive collaboration. The team demonstrated strong technical skills, responsiveness, and a commitment to delivering quality work. Design & Implementation – The team effectively translated our requirements into a visually appealing and functional UI, ensuring a smooth user experience. Timely Delivery – Most tasks were completed on time, and any delays were well-communicated in advance. Before we finished our current project we started to send them more projects.”

WF

What's for Dinner

United States

Upwork

“Ziya was incredible to work with on my project. Came to the job with clear directions and clear understanding of what I was looking for. Brought ideas to the table that I didn't think about. Excellent communication. Wonderful project knowledge and was very helpful in explaining a process that I know little about. Would definitely use again!”

YA

Yoda App

Client Partner

Upwork

“Ziya delivered our field data collection app for 70+ users on time and bug-free. His Flutter/Dart expertise is solid, and he proactively solved complex challenges including offline sync and GPS tracking without being asked. What impressed me most: clear daily communication, clean code that's easy to maintain, and thoughtful suggestions that improved our original design. When integration issues arose, he fixed them independently rather than just reporting problems. Would definitely hire again and recommend to others needing reliable Flutter development.”

Recognized & Verified Across Major Industry Platforms
Google
Google
5.0
Clutch
Clutch
5.0
Upwork
Upwork
Top Rated+
Trustpilot
Trustpilot
5.0
Ready to Launch?
Let's Get Started

Let's Build Your Firebase Backend?

Tell us about your mobile or web app specifications and receive a comprehensive Firebase backend proposal within 24 hours.

Free architecture consultation
Response within 24 hours
No commitment required