Open to opportunities

Sumedh Tambat

@sumedhtambat

Message

Staff Android Engineer with 10+ years building high-performance mobile apps and leading cross-functional teams.

India

Message

What I'm looking for

I'm looking for a senior mobile engineering role where I can lead architecture, improve app performance and stability, mentor engineers, and build scalable, user-focused Android products.

I am a Staff Android Engineer with over a decade of experience architecting high-performance mobile applications for companies like Truecaller and Razorpay.

I specialize in modern Android technologies — Kotlin, Jetpack Compose, Coroutines — and architectures such as MVVM and Clean Architecture to deliver scalable, testable code. My work has driven measurable outcomes including powering approximately 400 million daily notifications and improving crash-free sessions from 96.3% to 99.1%.

I've led end-to-end projects: building a secure UPI SDK, revamping ePOS and home screen experiences, and delivering reusable payment modules that reduced integration time. I mentor engineers, establish best practices, and lead code reviews to raise team quality. I also implemented performance and stability improvements that increased user retention by about 16%.

I thrive in cross-functional environments where I can own architecture decisions, mentor teammates, and ship reliable products at scale. I'm seeking opportunities to drive mobile platform strategy and build performant, user-first applications.

Experience

Work history, roles, and key accomplishments

Current

Staff Android Engineer

Current

Truecaller

May 2024 - Present (1 year 3 months)

Architected and developed features to show Spam Messaging ID (MID) based on LLM output, contributing to a system handling ~400 million daily notifications. Engineered a rule-based engine to improve spam notification accuracy and influenced key architectural decisions for a platform revamp.

Kotlin Jetpack Compose Coroutines MVVM Performance Optimization

Senior Software Development Engineer

Fynd (Reliance)

Jan 2023 - Oct 2024 (1 year 9 months)

Led development of a reusable payment module that reduced code redundancy and accelerated integrations, and re-engineered AJIO home screen with native UI, cutting page load time by ~1.8s. Optimized KYC media capture for BNPL flows, improving user retention by ~16%.

Kotlin Android Performance Payments Jetpack Module Design

Software Development Engineer

Clear

Mar 2022 - Oct 2022 (7 months)

Implemented a CodePush mechanism for a React Native product enabling instant releases and improved adoption of crash-free builds. Stabilized the flagship product and raised crash-free session rate from 96.3% to 99.1% through systematic bug and ANR reduction.

React Native CodePush A R Reduction CI CD Monitoring

Software Development Engineer

Razorpay

Oct 2018 - Feb 2022 (3 years 4 months)

Spearheaded ground-up development of the Razorpay UPI SDK using MVVM Clean Architecture with SSL pinning and extensive unit tests, and fully revamped the ePOS application owning design and API integrations. Maintained and enhanced core Payment SDKs for Android and Flutter.

Kotlin MVVM Clean Design SDK Development SSL Pinning Unit Testing API Integration Flutter

Android Developer

ZoloStays

Apr 2016 - Sep 2018 (2 years 5 months)

Developed and maintained B2C and B2B Android applications, single-handedly managing the B2B app lifecycle and delivering features using MVP. Implemented core functionality with Dagger, Retrofit, and LiveData in a fast-paced startup environment.

Java Dagger Retrofit LiveData Android SDK