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Ujjwal Kumar

@ujjwalkumar3

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Senior Android developer specializing in Kotlin, Jetpack Compose, and performant apps.

India

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What I'm looking for

I seek a role delivering high-performance Android apps where I can drive scalable architecture, CI/CD, observability, mentor engineers, and collaborate with backend/SRE teams.

I am a Senior Android Developer with 4+ years of experience building scalable, high-performance applications in the OTT and media streaming domain, focused on Kotlin, Jetpack Compose, and MVVM.

I have designed and delivered 10+ production features, led a migration from Java to Kotlin, implemented CI/CD pipelines with Jenkins, and reduced ANRs and crashes through profiling and Crashlytics-driven fixes.

I collaborate closely with backend and SRE teams to improve observability and stability, mentor junior developers, and prioritize test-driven development, accessibility, and scalable architecture.

Experience

Work history, roles, and key accomplishments

Current

Senior Android Developer

Current

Tata Play

Feb 2020 - Present (5 years 10 months)

Designed and delivered 10+ production features using Kotlin, Jetpack Compose, and MVVM, improved app modularity and reduced ANRs/crashes by 15% through profiling and Crashlytics-driven fixes.

Kotlin Jetpack Compose MVVM Firebase Crashlytics Jenkins Retrofit ROOM Coroutines

Android Developer Intern

Iniesta Webtech Solution

Jun 2019 - Jul 2019 (1 month)

Built a real-time news app using Kotlin and MVVM with offline reading and push notifications, increasing engagement by 15% and improving load scalability by 5%.

Kotlin MVVM Retrofit ROOM Firebase Android Performance

Education

Degrees, certifications, and relevant coursework

IMS Engineering College, Ghaziabad

Bachelor of Technology, Computer Science & Engineering

2016 - 2020

Grade: 73.6%

Activities and societies: Coordinated Chakravyuh sports fest; participated in Smart India Hackathon; won second prize at an NCC camp.

Completed a Bachelor of Technology in Computer Science & Engineering with a focus on software development and mobile applications, graduating in 2020 with a 73.6% score.