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SANJEEV GAUR

@sanjeevgaur

Message

I build high-performance React Native mobile apps for enterprise and public-sector products.

India

Message

What I'm looking for

I'm looking to build high-performance cross-platform mobile products where I can improve architecture, stability, and user experience while contributing through code reviews, mentoring, and scalable React Native development.

I've delivered production mobile applications across government, e-commerce, education, healthcare, and social platforms using React Native. At Rayosys, I improved app responsiveness and load times by 30% and resolved 15+ critical production crashes.

At EY, I built scalable mobile and web applications for enterprise clients using React Native, Next.js, and Ant Design. I reduced technical debt by 25% through architecture improvements, code reviews, refactoring, and secure RESTful API integration.

At Octal IT Solution, I created reusable React Native component libraries that increased team development velocity by 40% and reduced JavaScript bundle sizes by 30%. I've also led React Native migrations and supported reliable releases across iOS and Android.

I've built products including Digital Sansad for parliamentary operations, a $1M+ e-commerce platform, exam-preparation apps, real-time social experiences, and GST billing tools. I enjoy modernizing app architecture, mentoring developers, and making mobile products faster and more stable.

Experience

Work history, roles, and key accomplishments

Current

React Native Developer

Current

Rayosys

Aug 2025 - Present (1 year 2 months)

Architected and refactored React Native codebase to improve responsiveness and load time across iOS and Android. Achieved a 30% improvement in app responsiveness and load times through targeted optimizations.

React Native iOS Android Git XCode Android Studio Jira In App Purchases

Technology Consultant

EY (Ernst & Young) LLP

May 2024 - May 2025 (1 year)

Engineered scalable mobile and web applications using React Native, Next.js, and Ant Design for enterprise clients. Conducted code reviews and reduced technical debt by 25% through architecture improvements.

React Native Next.js Ant Design REST APIs Code Review Architecture

Associate Software Developer

Octal IT Solution

May 2022 - May 2024 (2 years)

Designed and developed reusable React Native component libraries to accelerate development across concurrent projects. Increased team development velocity by 40% and optimized JavaScript bundle sizes by 30%.

React Native JavaScript Component Libraries Bundle Optimization Version Migrations

React Native Developer

Destm Technology Pvt. Ltd.

Sep 2021 - Mar 2022 (6 months)

Developed cross-platform mobile user interfaces using React Native and Redux to deliver near-native performance on iOS and Android. Maintained Git workflows for a 6-member development team and integrated APIs using Axios.

React Native Redux Git Axios Mobile UI

Web Developer Trainee

Numeric Infosystem Pvt. Ltd

Jun 2020 - Aug 2021 (1 year 2 months)

Assisted in development of dynamic web applications using React.js and Node.js during internship. Integrated APIs and supported frontend–backend feature implementations, debugging and release activities.

React NodeJS API Integration Debugging