Hi, I'm Shubham
Singh
SDE at PhonePe, ex-Glance (InMobi). I build Android apps at scale, write The Code Report newsletter for 4,300+ subscribers, and mentor aspiring devs. Kotlin fanatic, DSA enthusiast, and a hip-hop lover.
My Journey
From base camp to the summit — every checkpoint shaped who I am
Software Development Engineer
PhonePe
Spearheading the Android Offers platform serving 500M+ users across India. Architected the complete migration of Offers discovery from legacy Views to a Feed-based architecture using Jetpack Compose, resulting in a 24% jump in user retention and 35% faster page loads. Identified and resolved critical jank issues causing frame drops on low-end devices through systrace profiling and lazy composition. Led reliability improvements including crash-free rate optimization from 99.2% to 99.8%, implemented circuit-breaker patterns for API resilience, and mentored 2 junior engineers on Compose best practices and clean architecture patterns.
Software Development Engineer
Glance (InMobi Group)
Core Android engineer on the Glance Lock Screen platform reaching 400M+ devices globally. Architected 2 major SDKs from the ground up — a Camera SDK with CameraX supporting real-time filters, AR effects, and multi-lens switching, and a Content Creation SDK enabling users to produce short-form video content with templates. Led mission-critical platform migrations including Kotlin 1.9 → 2.0, KAPT → KSP (40% faster builds), ExoPlayer → Media3, and Dagger → Koin. Built AI-powered content generation features integrating on-device ML models for smart cropping and auto-captioning. Revamped the entire authentication system reducing login failures by 60%. Shipped 326+ PRs, delivered 30+ major features, conducted 200+ code reviews, and consistently ranked in the top 10% of contributors across the org.
SDE Intern → Converted to Full-Time
Glance (InMobi Group)
Started as an intern and earned full-time conversion within 6 months based on impact. Built pixel-perfect UI components using Jetpack Compose for the Glance lock screen experience. Implemented deep linking infrastructure enabling seamless content-to-app navigation, increasing click-through rates by 18%. Developed partner-specific SDK configuration system supporting 15+ OEM partners (Samsung, Xiaomi, Oppo). Integrated analytics tracking pipelines for user engagement metrics, and optimized image loading with custom Coil transformations reducing memory usage by 25%. Contributed to the CI/CD pipeline and wrote comprehensive unit tests achieving 85%+ coverage on new modules.
Jr. Associate — Big Data & EDW
Celebal Technologies
Intensive cloud and data engineering training program where I earned 3 industry certifications — Microsoft Azure AZ-900 (Cloud Fundamentals), DP-900 (Data Fundamentals), and Databricks Lakehouse Platform. Built automated web scraping pipelines using Selenium WebDriver and BeautifulSoup to extract structured data from 50+ sources. Designed and deployed ETL workflows on Azure Data Factory for transforming raw data into analytics-ready datasets. Gained hands-on experience with Azure Blob Storage, SQL Database, and Databricks notebooks for large-scale data processing.
Android Developer Intern
DKG Labs
First professional experience as an Android developer, working on the Hero Lectro e-bike companion app. Fixed 40+ production bugs spanning Bluetooth connectivity, GPS tracking, and battery monitoring modules. Developed new features including ride history with route visualization using Google Maps SDK, real-time speed/distance dashboard, and push notification system with Firebase Cloud Messaging. Collaborated with senior engineers on REST API integration using Retrofit + OkHttp, implemented offline-first architecture with Room DB, and trained 3 new team members on the project codebase and development workflow.
B.Tech — Computer Science & Engineering
Dr. A.P.J. Abdul Kalam Technical University
Graduated with a GPA of 8.71/10. Built a strong foundation in core CS — data structures & algorithms, operating systems, DBMS, computer networks, and software engineering. Completed 600+ DSA problems across LeetCode and GeeksforGeeks. Led the college coding club, organized inter-college hackathons, and mentored juniors in competitive programming. Final year research project on 'AI-Powered Blogging Platforms' published in an international journal. Active participant in Google Developer Student Clubs and won multiple intra-college coding competitions.
Skills & Technologies
My toolkit for building Android apps at scale
Achievements & Certifications
Milestones I'm proud of
LinkedIn Top Voice — recognized for high-impact dev content
2x Microsoft Azure Certified (AZ-900, DP-900)
1x Databricks Lakehouse Certified
1x GitHub Certified Developer
Author of The Code Report newsletter — 4,300+ subscribers
Hackathon Judge — V.I.T. Vellore, Kalasalingam University
Software Engineering Evangelist @ Topmate.io
Published research on AI in Blogging Platforms
Latest from the Blog
Thoughts, tutorials, and things I've learned
Why I Mass-Migrated From Dagger to Koin — And Never Looked Back
After years of wrestling with Dagger's annotation processing, compile-time headaches, and cryptic error messages, I migrated an entire SDK to Koin. Here's why it was the best architectural decision I made at Glance.
Jetpack Compose Performance: Lessons From Serving 500M+ Users
Compose is magical until it isn't. At PhonePe scale, every unnecessary recomposition costs real money. Here's how I profiled, debugged, and fixed jank in production Compose screens.
Get in Touch
Have a project in mind or just want to say hi? Let's talk!