SG Sanjay Gangwar

Services

One senior dev for your mobile app and backend.

I help small teams and founders fix, ship, monetize and maintain mobile products without creating a coordination tax.

Offer

Where I can help

App rescue

Flutter / Android stabilization

Fix crashes, ANRs, broken navigation, app startup issues, plugin drift and release blockers.

Crash triageGradleFlutterPlay Store
Backend

Mobile backend work

Design and repair APIs, auth middleware, MongoDB models, webhooks, jobs and deployment scripts.

ExpressMongoDBFirebase AuthDocker
Revenue

Monetization wiring

RevenueCat, AdMob, app-open/banner/interstitial ads, subscription restore flows and store metadata alignment.

RevenueCatAdMobSubscriptions
Release

Store release management

Fastlane, signing, Play Console and App Store Connect cleanup, review notes and beta rollout checks.

FastlaneTestFlightPlay tracks

Engagement shape

Good fit

You already have an app

Best when there is code, users, a failing release, a rejected build, or a monetization path that needs implementation.

You need direct execution

I am most useful when I can inspect the repo, make the patch, run checks and leave a clean handoff.

You value boring reliability

The goal is not novelty. The goal is a product that installs, launches, earns, and survives review.