01
Consumer scale
Compose migration, MVVM, payment flows, and recomposition tuning for apps with millions of daily users.
Jetpack ComposeMVVMPaymentsPerformance
Delhi, IN
5 yrs experience
Open to senior roles
Mobile Engineer·Kotlin Multiplatform
Vishal Gaur.
Senior Android Engineer with 5+ years building apps at scale — from payment flows and edtech platforms to last-mile logistics.
Focused on performance, stability, and developer productivity; experienced with Jetpack Compose, KMP, and LLM-assisted workflows.
01
What I work on
3 problem classes
02
Reliability & stability
Crash diagnostics, background processing, WorkManager optimization, and test coverage — keeping apps stable at millions of daily active users.
Crash-freeWorkManagerTestingBackground Processing
03
Cross-platform
Kotlin Multiplatform shared modules, Compose Multiplatform UI, and clean iOS interop for one codebase, every surface.
KMPCompose MultiplatformiOSDesktop
02
Where I've worked
2021 — present
Aug 2024 — Present
Current
Senior Software Engineer @ Shipsy
Sole owner of Shipsy OnDemand — a last-mile delivery app serving Flipkart Minutes, Myntra Now, Apollo, and KFG across multiple countries, powering 1M+ daily orders.
- 01Delivered end-to-end features: Product Exchange Flow, Open Box Delivery (QC), Returnable Bags, and Undelivered Unblock; drove core improvements in Background Location Syncing, Order Allocation, and Auto-reject flows.
- 02Improved app stability from 88% to 98% crash-free rate through targeted diagnostics; provided critical production support for Flipkart Minutes (600K+ daily orders) since go-live.
- 03Pioneered spec-driven development and LLM-assisted workflows, boosting team productivity by 50%.
- 04Integrated MCP to automatically surface critical crashes and raise PRs, reducing incident response time significantly.
KotlinJetpack ComposeCoroutinesRoomWorkManagerMCP
Full case study →Jun 2022 — Jul 2024
SDE-2 · Android @ Testbook
EdTech platform serving 5M+ learners. Led Compose adoption and shipped revenue-driving features end to end.
- 01Implemented Jetpack Compose UI eliminating redundant re-compositions for over 5M users.
- 02Introduced Masterclass and Masterseries on a modern MVVM stack, attracting 50K+ daily uniques.
- 03Spearheaded WorkManager optimization, reducing crashes 90% (from 50K to 1K).
- 04Integrated EMI payment flow via eNACH for courses, lifting revenue 25%.
KotlinJetpack ComposeMVVMRetrofiteNACH
Full case study →Jan 2021 — Apr 2022
Software Engineer · Android @ Paytm
Android development on financial flows at one of India’s largest fintech platforms, serving 100M+ users.
- 01Modernized Mobile Recharge and operator selection with a new UI, increasing engagement for 100M+ users.
- 02Implemented handling for sudden price changes of mobile operators, ensuring seamless operations for millions of daily transactions.
- 03Integrated split bill with Utility Bill payments, enabling expense splitting for 1M+ transactions.
- 04Led writing of unit and UI tests using JUnit, Espresso, and Mockito, achieving 50% code coverage across the team.
KotlinJavaMVVMRoomDBJUnitEspressoMockito
Full case study →03
Selected work
012022
Prefixer→
Android library wrapping SharedPreferences with a typed, fluent API. Published on Maven.
AndroidLibraryKotlin
022021
Shopping App→
Android e-commerce app with Firebase OTP auth, Room-backed cart, and 80% test coverage. 100 GitHub stars; featured in Google Dev Library.
KotlinFirebaseRoomEspresso
032020
Movie Data App→
TMDB-powered movie discovery client with Coroutines, Retrofit, and an MVVM presentation layer.
KotlinCoroutinesRetrofit
042021
DS & Algo Web→
Interactive visualizer for sorting, search, and graph algorithms. Built for teaching.
ReactVisualizer
04
Get in touch
Hiring for a senior mobile role, building on Compose Multiplatform, or just want to talk Kotlin? Drop a line.
- emailrr.vishalgaur@gmail.com
- github@i-vishi
- linkedinin/i-vishi