Niraj Kumar
Bengaluru
Summary
Frontend Android engineer with 13+ years of experience in Android (Java/Kotlin) and cross-platform (React Native) app development. Proven track record of leading and mentoring teams for 2+ years, driving mobile architecture, CI/CD automation, and large-scale product delivery. Delivered enterprise-grade mobile applications for fintech, gaming, and e-commerce with 25M+ users and 99.999% crash-free reliability. Skilled in Agile/Scrum, stakeholder management, and end-to-end delivery of secure, scalable, and high-performing apps.
Overview
14
14
years of professional experience
Work History
Engineering Manager
Games24x7
06.2025 - Current
- Owned technical roadmap, architecture reviews, code reviews for My11Circle mobile apps (25M+ users) across Android, iOS, and React Native, achieving 99.999% crash-free stability.
- Leading and mentoring a team of Android and iOS developers, driving technical vision, architecture, and mobile product roadmap.
- Collaborating with Product, UX, QA, and Backend stakeholders to ensure seamless mobile releases.
- Implementing coding best practices, CI/CD automation, and secure app store deployments.
Tech Lead
Games24x7
04.2021 - 06.2025
- Architected modular systems using Kotlin and React Native, improving app launch performance by 70%.
- Automated CI/CD pipelines (Jenkins + Git) for mobile, reducing release cycles by 40%.
- Partnered with business stakeholders for feature prioritization and timely delivery.
- Boosted app launch performance by 70% by implementing offline caching, session lifecycle optimization, and modular reusable components across Android and React Native platforms, validated through Firebase Performance API.
- Achieved zero Sev-1 incidents & zero rollbacks for 2 consecutive years using proactive monitoring, 100% unit test coverage.
- Directed cross-functional teams (12+ engineers), improving retention and engagement through scalable features.
SDE-2
Games24x7
05.2018 - 04.2021
- Architected modular Android systems (analytics, attribution, sockets) using MVVM + Clean Architecture, driving 10% increase in retention and 5% revenue growth.
- Implemented end-to-end Jenkins CI/CD pipeline for Android app builds, reducing manual effort and deployment time.
Android Developer
Get Simpl
12.2016 - 05.2018
- Built merchant Android SDKs and automated CI/CD pipelines, enabling fast, reliable deployments and driving a 30% increase in sales.
- Championed TDD and Agile practices, accelerating secure, iterative delivery and improving the development cycle by 20%.
- Developed Android applications leveraging MVVM and Clean Architecture for scalable, maintainable solutions.
Lead Engineer
Snapdeal
07.2015 - 12.2016
- Built merchant SDKs and automated CI/CD pipelines, enabling reliable deployments and increasing sales by 30%.
- Championed TDD and Agile practices, reducing dev cycle time by 20%.
- Architected and launched Exclusively Fashion Android app from scratch, leading cross-functional teams through full SDLC.
Senior Software Engineer
Sonim Technology
09.2014 - 07.2015
- Developed sensor-based Sonim Protect application from scratch, ensuring reliability, scalability, and robust mobile architecture.
Senior Software Engineer
Samsung R&D
03.2012 - 09.2014
- Core contributor to Contact and System framework team, developing foundational mobile system components and frameworks.
Education
B.E. - Computer Science & Engineering
Government Engineering College
Jabalpur, India06-2011
Skills
- Frontend & Mobile Development: Android (Java, Kotlin), React Native & React
- Architecture & Design: Mobile Architecture, MVVM, Clean Architecture, Modular SDKs, Scalability, System Design
- DevOps & CI/CD: Jenkins, Git, Docker, Mobile CI/CD Pipelines, App Store Deployment, Google Play Store Deployment
- Backend & APIs: Nodejs, REST APIs, GraphQL, WebSocket
- Testing & Automation: TDD, Unit Testing, Regression Automation, Jest
- Security: OAuth2, JWT, SSL Pinning, AES Encryption, Secure Key-store
- Cloud & AI/ML: AWS, Gen AI (AWS Bedrock, RAG, Vector DB), ML integrations
Timeline
Engineering Manager
Games24x7
06.2025 - Current
Tech Lead
Games24x7
04.2021 - 06.2025
SDE-2
Games24x7
05.2018 - 04.2021
Android Developer
Get Simpl
12.2016 - 05.2018
Lead Engineer
Snapdeal
07.2015 - 12.2016
Senior Software Engineer
Sonim Technology
09.2014 - 07.2015
Senior Software Engineer
Samsung R&D
03.2012 - 09.2014
B.E. - Computer Science & Engineering
Government Engineering College