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ShubhamPandey

Senior Android Engineer · Lucknow, India

"Building scalable Android applications used by millions of users."

Shubham Pandey - Senior Android Engineer
10M+
App Installs
99.8%
Crash-Free Sessions
5+
Years Experience
~30%
Startup Improvement

Engineer by craft,
builder by instinct

I'm a Senior Android Engineer with 5+ years building Kotlin-based applications trusted by millions of users worldwide. My work spans consumer apps at scale, fintech payment systems, and performance-critical mobile architecture.

I thrive at the intersection of product thinking and engineering excellence — collaborating closely with designers and PMs from wireframe to Play Store, while owning the full technical lifecycle: architecture, implementation, CI/CD, and production monitoring.

Currently exploring opportunities in Barcelona, Madrid, Dubai and other exciting cities with relocation support — targeting companies like Trade Republic, Wise, Wolt, Revolut, and Esper.

🏗️

Architecture-First Mindset

Clean Architecture, MVVM, modularization — I build systems that scale with the team and product, not against them.

🚀

Ship Fast, Stay Stable

CI/CD pipelines, staged rollouts, crash monitoring — I've built release processes that let teams move quickly without breaking things.

🤝

Cross-Functional Collaborator

From wireframes to production — I work closely with product, design, and backend to deliver coherent, user-focused features.

What I work with

A curated stack built through years of production-grade Android development.

📱 Android Core
Kotlin Jetpack Compose Android SDK Java Android Jetpack Material Design 3 ViewModel LiveData
🏛️ Architecture
MVVM Clean Architecture Modularization Single Activity Design Patterns Offline First
Async & DI
Coroutines Flow StateFlow SharedFlow Hilt Dagger2 WorkManager Room
🌐 Networking
Retrofit OkHttp REST APIs OAuth 2.0 JWT GraphQL
🧪 Testing
JUnit MockK Espresso TDD Mockito UI Automator
🔧 Tools & DevOps
Git Gradle CI/CD GitHub Actions Firebase Crashlytics Jira Figma

Where I've built

5+ years of building, shipping, and scaling Android applications in production.

Android Developer
Sept 2022 – Present
Papaya Coders Pvt Ltd
  • Owned and scaled an Android app to 10M+ installs, 4.5★ Play Store rating, and 99.8% crash-free sessions across a wide range of devices.
  • Collaborated closely with product designers on new feature design — from wireframes and mockups through Jetpack Compose implementation and Play Store release.
  • Built reusable Compose component libraries; defined and maintained visual guidelines ensuring consistency throughout the app.
  • Developed fintech features for utility billing and payments, handling secure transactions, payment workflows, and real-time API integrations.
  • Reduced app cold-start time ~30% via coroutine-based initialization and profiling; modularized codebase into 5+ Gradle modules.
  • Owned CI/CD pipelines and release processes, enabling faster and more reliable deployments with staged rollouts.
  • Applied TDD practices using JUnit & Mockito for critical modules; drove code quality through structured code reviews and technical mentoring.
Kotlin Jetpack Compose MVVM Hilt Coroutines CI/CD Fintech
Android Developer
Jun 2021 – Aug 2022
Digislots
  • Developed and delivered customer-facing Android UI features using Kotlin, Jetpack Compose, Coroutines, and Flow.
  • Migrated legacy app to MVVM using ViewModel, LiveData, StateFlow, and Coroutines, improving maintainability and reactive data handling.
  • Mentored junior engineers through code reviews and adoption of modern Android development practices.
  • Delivered iterative features in Agile sprints; improved stability via Firebase Crashlytics monitoring.
Kotlin Jetpack Compose MVVM Coroutines Agile

What I've shipped

Production applications trusted by millions of users — built with performance, reliability, and great UX at the core.

Consumer App · Play Store

Large Scale Android Consumer App

Production app scaled to 10M+ installs with 4.5★ rating and 99.8% crash-free sessions. Architected from ground up with modular, scalable design.

Kotlin Jetpack Compose MVVM Hilt Coroutines 10M+ installs
Fintech · Payments

Fintech Payments Application

Secure payment workflows with OAuth 2.0 authentication, offline-first data sync, REST API integration, and real-time transaction handling.

Kotlin Secure Payments OAuth 2.0 REST APIs Room WorkManager
Open Source · Architecture

Android Architecture Showcase

A clean reference implementation of multi-module Android architecture with Clean Architecture, Hilt DI, and comprehensive test coverage as a portfolio showcase.

Kotlin Modularization Clean Arch Hilt TDD JUnit

Where I go deep

Specialised areas where I've built real-world solutions at scale, not just tutorials.

🏛️

Android Architecture

MVVM + Clean Architecture with strict layer separation. Multi-module Gradle setups that scale with team size and reduce build times.

Performance Optimization

Profiling with Android Studio tools, cold-start optimization (~30% reduction), memory leak detection, and UI rendering improvements.

🧩

Modularization

Decomposing monoliths into feature, data, and core modules. Enabling parallel development and enforcing clean dependency boundaries.

🔄

CI/CD & Release

GitHub Actions pipelines with automated testing, code quality gates, staged Play Store rollouts, and production crash monitoring.

📶

Offline-First Development

Room database with WorkManager sync strategies. Reliable UX even in poor network conditions — critical for emerging markets.

📈

Scalability at 10M+ Users

Production experience maintaining stability and performance at scale. 99.8% crash-free across diverse Android devices and OS versions.

Let's build
something great

Open to Senior Android Engineering roles in Europe (Spain, Germany, Netherlands) and UAE. Relocation-ready.