GSGurdeep Saini

Android Developer · MoneyView

I ship production Android for fintech — Kotlin, Compose, and the kind of details users never notice but always feel.

By the numbers

Small numbers, big impact.

APK size79.1MBBEFORE44MBAFTER-44%

Shrunk the app 44% with R8, vector drawables & an App Bundle migration.

44%Smaller APK

79.1MB → 44MB via R8, vector drawables & AAB

₹400Cr+Loans disbursed

Through loan products I helped build

2 linesTo integrate

A reusable feedback component across 5+ flows

10+Tables to Room

Migrated ORM tables with Coroutines & Flows

What I build

Shipping features that actually move metrics.

Performance

Made the app 44% lighter

Cut the APK from 79.1MB to 44MB with ProGuard/R8, vector drawables and an App Bundle migration — lifting Play Store ranking and install rates.

R8 · AAB · Vectors
Architecture

A referral engine that scales

Architected a multi-product referral system on an SDUI framework with Compose, Retrofit, Hilt and AppsFlyer — so campaigns roll out fast and stay compliant.

SDUI · Compose · Hilt
Cross-platform

One codebase, two platforms

Led a Kotlin Multiplatform migration sharing business logic across Android and iOS, with Koin for DI and Ktor as a unified API layer.

KMP · Koin · Ktor
Craft

Offline-first, backward-compatible

Built Add/Edit Accounts on Material 3 with Room for offline persistence, and permission-free PDF downloads via WorkManager, safe back to Android 9.

Room · Material 3 · WorkManager

Featured work

A few things I've built.

Slate Board

A playful drawing canvas for kids built with a custom Android UI in Kotlin.

KotlinCanvas
View on GitHub

Doctor Patient Appointment App

Appointment booking built with Compose, Firebase (Auth, Firestore, Remote Config), Hilt and MVVM, following Material Design 3.

ComposeFirebaseHiltMVVM
View on GitHub

GenAI Resume Enhancement App

AI resume analyzer using the Gemini API with Firebase Remote Config for dynamic LLM updates, PDF parsing and a Compose UI.

Gemini APIComposeRemote ConfigPDF
View on GitHub

Room CRUD

A Room database proof-of-concept covering CRUD operations, migrations and a Repository pattern in Kotlin.

KotlinRoomCoroutines
View on GitHub

Finance Manager

A personal finance and expense tracking app built in Kotlin with a clean, offline-friendly architecture.

KotlinAndroid
View on GitHub

Movies (TMDB)

A movie browsing app powered by the TMDB API — search, details and paginated lists in Kotlin.

KotlinTMDB APIRetrofit
View on GitHub

WorkManager Demo

A focused proof-of-concept for background and deferrable work using Android WorkManager.

KotlinWorkManager
View on GitHub

ViralVault

A content vault experiment exploring modern Android UI and state management in Kotlin.

KotlinCompose
View on GitHub

Video Call App

A real-time video calling proof-of-concept built on Android in Kotlin.

KotlinWebRTC
View on GitHub

Firestore Realtime

A hands-on demo of real-time data sync with Cloud Firestore on Android.

KotlinFirestore
View on GitHub

Firebase Sign-In

Authentication flows with Firebase Auth and Google Sign-In in Kotlin.

KotlinFirebase AuthOAuth
View on GitHub

Remote Config Demo

Feature flags and remote-driven UI using Firebase Remote Config on Android.

KotlinRemote Config
View on GitHub

Download Manager

A permission-free file download proof-of-concept for modern Android.

KotlinWorkManager
View on GitHub

Dynamic App Icon

A demo for switching Android launcher icons at runtime with activity-alias.

KotlinAndroid
View on GitHub

Service Locator

A lightweight service-locator dependency-injection pattern implemented in Kotlin.

KotlinDI
View on GitHub

Custom Canvas

Custom drawing and rendering with the Android Canvas API in Kotlin.

KotlinCanvas
View on GitHub

Room Database

A focused example of local persistence with the Room ORM on Android.

KotlinRoom
View on GitHub

Quizzy

A quiz app with scoring and question flows, built in Kotlin.

KotlinAndroid
View on GitHub

Quizzyy

An early quiz app exploring Android fundamentals and UI in Kotlin.

KotlinAndroid
View on GitHub

Weather App

A weather app fetching live conditions and forecasts via a REST API in Kotlin.

KotlinREST API
View on GitHub

7 Minute Workout

A guided 7-minute workout app with timers and exercise flow, built in Kotlin.

KotlinAndroid
View on GitHub

CalSi

A clean, simple calculator app built in Kotlin.

KotlinAndroid
View on GitHub

Let's Connect

A social connect app built in Java, exploring Android fundamentals and networking.

JavaAndroid
View on GitHub

Blockchain Project

A blockchain experiment built in JavaScript, exploring blocks, hashing and chaining.

JavaScriptBlockchain
View on GitHub

Let's talk

Have an Android problem worth solving?

I'm open to engineering roles and product collaborations where reliability, performance and craft matter.