Open to opportunities

Udayasaran Kumar

@udayasarankumar

I build cross-platform React Native mobile apps, optimizing performance and integrating GraphQL, REST APIs, and secure auth.

Zimbabwe

Message

What I'm looking for

I’m looking for a product-focused team where I can build and scale cross-platform mobile apps, own end-to-end features, optimize performance, and work closely with backend and design on GraphQL/REST integrations.

I’m a React Native Developer with 2+ years of experience delivering cross-platform mobile applications using React Native, Expo, TypeScript, GraphQL, and Firebase. I focus on building scalable, user-centric products with modern mobile architecture patterns.

In my recent role, I developed and maintained production-grade apps, integrating and optimizing GraphQL and REST API workflows to ensure reliable data synchronization and seamless user interactions. I also troubleshot complex Android and iOS platform-specific issues, improving stability, usability, and production readiness through strong debugging, testing, and release management practices.

Across freelance work and projects, I owned end-to-end feature delivery—from authentication flows and responsive UI components to performance tuning and workflow automation. I’ve also contributed to work involving payment automation, real-time event handling (WebSockets/Webhooks), and AI-driven assessment workflows, always with a mindset of continuous improvement in agile environments.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

NeuDayAI Technologies Pvt. Ltd.

Jun 2025 - Present (1 year)

Developed and maintained production-grade cross-platform mobile applications using React Native, Expo, TypeScript, and GraphQL, delivering scalable and user-centric features. Integrated GraphQL/REST API workflows, troubleshot Android and iOS issues, and improved architecture, code quality, testing, performance, and release readiness in an Agile environment.

React Native Expo TypeScript GraphQL Apollo Client REST APIs Firebase Performance Optimization

Freelance React Native Developer

Freelancing

Jun 2024 - May 2025 (11 months)

Built scalable React Native and React applications focused on performance, including authentication flows and API integrations. Owned end-to-end feature development, testing, and optimization for responsive UI components.

React Native React TypeScript Authentication Systems API Integration Responsive UI Testing Performance Optimization